PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 156. PERISOEEUS CANADENSIS NIGEICAPILLUS.Ch.?Similar to P. canadensis fumifrons in darkuessof coloration, butforehead, lores, chin, throat, and sides ofneck distinctly white, in markedand abrupt contrast with the dark color of adjacent parts ; crown, occi-put, and upper part of auricular region decidedly black, with little or noadmixture of slaty anteriorly. Differing from true canadensis in muchdarker coloration throughout, much blacker crown, black auriculars,less extensive white area on forehead, and more marked contrast of thewhite portions of head and neck, with adjacent darker colors.$ adult : (No. 85950, U. S. Nat. Mus. Labrador, Apr. 2, 1880; " Schnei-der"; presented by Dr. L. Stejneger.) Whole forehead (back to about .75 of an inch from the anterior points of the nasal tufts), lores, malarregion, chin, throat, and sides of neck soiled white, many of the feathersof the chin and throat having black shafts; crown and occiput, withupi)er and posterior j^ortions of auricular region, deep black, somewhatmixed with slaty anteriorly and posteriorly. Upper parts dark dull slate,lighter and more grayish on the nape, and changing to plumbeous onthe secondaries and tail-feathers, all of which are narrowly bordered at .ends with white, which is about .25 of an inch wide on lateral rectrices;X^rimaries edged with grayish white beyond their sinuations. Lowerparts dark bi'ownish gray, quite abrupth^ defined against the soiledwhite of the jugulum. Bill and leet deep black. Wing, 5.40; the pri-maries 1.10 longer than secondaries; tail, 5.30, its gradation only .75;culmen, .85 ; tarsus, 1.40 ; middle toe, .05.It is only after very careful comparison with numerous specimens ofthe true P. canadensis from Maine, Nova Scotia, New Brunswick, Min-nesota, and various localities in the interior of British America, and ofan even larger series of P. canadensis fumifrons from Alaska, that I haveconcluded to base a new geographical race of this species upon thesingle specimen described above. That I am fully justified in doingso is evident from the fact that not one specimen among nearly 100 adultbirds of this genus resembles very closely the specimen in question. Inall probability the form to which the present specimen belongs inhabitsthe coast -district of Labrador, and would thus represent on the- Atlanticside the littoral race of Alaska, called P. canadensis fumifrons. SYIVOPSIS OF THE WKST IIVUBAIV MYAWESTES.By I.E01VHARD STEJIVEGER.Having had occasion to examine the various species of Myadestes* inconnection with a study of the genera of Turdidie, certain differences inthe wing-structure among species of the West Indian group, typified by * So tlie name is origiuallj' spelt by Swaixson, and as /.ivain found besides /nultx, Ihave preferred the older form to Agassiz's restoration. 16 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM.M. fjcniharhis Swains., led me into a further examination of the speciesof this section of the genus, with the aid of additional material. Theinspection of the fine series of specimens, which, through the kindnessof the authorities of the U. S. National Museum, I have been enabledto bring together, has resulted in a discovery of such interesting rela-tionships between the forms in question, that I have concluded to putmy notes into the shape of a monograph of all the West Indian species.The National Museum collection, while i)robably more comi>lete thanany other, is still lacking in specimens from a large number of the WestIndian Islands.t Mr. George N. Lawrence, of New York City, haskindly placed at my disposal his entire collection of species of this genus.Mr. J. A. Allen, of the Museum of Comparative Zoology, Cambridge,Mass., has loaned me seven specimens from the island of Sta. Lucia,while Mr. C. B. Cory, of Boston, has generously put in my hands theunique type of his M. montanus, from Haiti. These, together with thecollection of the National Museum, make a series of 35 specimens, whichrepresent very satisfactorily all the forms herein described, with theexception of M. montanus.I desire to express my obligations to my friend Egbert Eidgwayfor the kindness with which he has rendered me assistance in the preparation of these pages.Washington, D. C, February 10, 1882.SYNOPSIS OP THE SPECIES.a'. Throat and crissum orange-brown, abruptly definetl ; breast slaty blue, a jiatcli ofwhite on under eyelid,t'. Uf)per parts sooty black, back and breast difierent in color.1. M. sihilans Lawii.6^. Upper parts slaty blue; back and breast of the same color,ci. Legs light yellow; no yellow armilla on tibia.d^. Ears streaked with white ; a white, or white and brown stripe alonglower part of cheeks, bordered beneath by a blackish line,e'. Chin of same color as throat, not white ; whole abdomen like thocrissum.2. M. genibarhis Swains.e^. Chin white, abruptly defined ; upper abdomen like the breast./'. Only the fore half of the malar stripe white, the hind partbrown ; tail-feathers not shorter than wing,3. M. sancioc-lucioi Stejneger./-. Almost the whole malar strijie white, only a few feathers atthe lower end tinged with brown ; tail feathers not longerthan wing. ,4. M. (iomjmJcawus Stejneger. t Of the West Indian Islands inhabited by a species of Myadcutcs, but from whichthe National Museum possesses no specimens, are St. Domingo and Sta. Lucia. Nospecies are known to occur upon the islands of Porto Rico, Guadeloupe, or Grenada,but as these islands are mountainous and resemble in other jihysical features thoseupon which species of Myadcstcs are kuown to occur, it is altogether probable thateach one of these also possesses its peculiar sjiecies of the genus. PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 17 ?id . Ears blackish, not streaked ; extreme ijoint of base of lower mandiblewitb an almost inappreciable white or brown spot.c'. Whole chin, and the spot on the malar apex brown.5. M. montamis Cory.e^. Extreme point of chin, and malar apex, each with a white spot.6. M. solitarius Baird.? c^. Legs brown ; a yellow armilla round lower end of tibia.?7. M. armillatus (Vieill.).a*. Whole under surface unifoi-m whitish ; a white ring round the eye.8. if. eZisrtZ)eeculum on the wing. Besides, therufous color on the under surface is mixed with orange, and totallydifferent from the brownish tint of the other species.2. MYADESTES GENIBAEBIS Swains.[Plate II, Fig. 3.]?1818. ? Muscicapa armillata Vieill. N. Diet. d'Hist. Nat. xxi, p. 448 (juv., nee 1807).1837.?Myadestes genibarUs Swains. Nat. Libr., XIII Ornith. Flycatcli., p. 134, pi.13.?Baird, Eev. N. A. Birds, I, 1866, p. 423.?Lawr. Pr. U. S. Nat. Mus.1878, p. 352.U. S. Nat. Mus. No. 75136 ( J ad. Martinique., July, 1877, E. A. Ober).Second primary about two and a halftimes the 1st, which is attenuated,but notfidcate; 2d also attenuated towards the tip, but not sinuated;3d normal ; 2d equal to the 8th 5 3d shorter than 6th ; 4th, 5th, and 6th PEOCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 19largest. Tail considerably graduated and less emarginated, the middlepair being equal to the 2d pair from the outside ; tail-feathers a littleshorter than wing.Upper surface pure slaty-plumbeons, forehead slightly washed witholivaceous; lores black; also a stripe below the white patch on the undereyelid, assuming the color of the back on the ear-coverts, each featherof which and the above-mentioned stripe having a narrow, well-definedwhite central streak behind, very faintly washed with brownish. Fromthe base of lower mandible a well-defined malar stripe runs backwards,the anterior third of which is white, while the lower two-thirds have thecolor of the throat, from which the malar stripe is separated by a narrow,but distinct, black stripe, reaching close to the lower edge of the mandi-ble. Throat and chin chestnut-rufous, the white bases of the featherson the latter showing somewhat through. Breast and upper sides ofabdomen lighter than the back, almost clear ash-gray, becoming gradu-ally lighter towards the abdomen ; remaining underparts of the samecolor as the throat, only somewhat paler, and assuming a faint oliva-ceous shade on the upper abdomen ; tibia like the back, a few feath-ers being tipped with rufous. Wings blackish, with pale edges onthe primaries and two ash-gray bars across the secondaries, leavingbetween them a deep black patch; wing-coverts, except the primarycoverts, broadly edged with gray like the baclv ; innermost secondariesalmost entirely so ; inner web of the quills white at the base, forming abroad bar on the under surface of the wing ; edge of wing grayish white.Middle tail-feathers uniform slate-gray ; the following pairs black, thethree outmost with a wedge-shaped white spot on the inner web at theend, making on the innermost only one-fifth of the length of the quill,on the middle one about one-half, and on the outerinost about two-thirds,the outer webs being light slate-gray for the same extent from the tip.Bill black ; legs pale brownish yellow.The female seem to differ from the male in having the gray color ofthe breast less pure, this part being somewhat suffused with rufous-olive.A young bird in the collection of Mr. Geo. N. Lawrence {Martinique,July, 1877, F. A. Ober), which has begun to assume the adult plumage,has the underparts dull orange-rufous, each feather with blackish edges,except on the throat and under tail- coverts, which are almost unicolor;upper parts and small wing-coverts much darker, with small rufousspots before the black terminal edge; greater and middle wing-covertsedged at the tip with rufous. Wing-feathers elsewhere and tail almostidentical with the same parts in the adults. 20 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM.Table of dimensions. PKOCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 213cT, 4tli, 5tli and Gtli longest. Tail as in M. geniharhis; tail-featherseqnal to or a little longer than the wing.Whole upper parts slaty plumbeous with a conspicuous olivaceouswash, becoming more intense on the lower back, but lacking on therump and upper tail-coverts. The pattern of the head that of M. (jeni-harhis, except that the black stripe below the eye extends further backon the auriculars, and that the white part of the malar stripe occupiesthe forward half. Chin pure white, this color abruptly defined againstthe throat, which is rufous-chestnut. The remaining underparts likethose of the Martinique bird, except that the gray of the breast ex-tends more backward on the abdomen. Wings and tail also havethe same general appearance as in the above-mentioned species; on thewings, however, the black speculum of the secondaries is more reduced,the adjacent grey cross-bands being broader, and on the tail the whiteis more extended, especially on the outer pair, in which the middle thirdof the outer web is white; besides, the outer webs of the three outermostrectrices are broadly tipped with white, and the following two jwirshave also very distinct white tips. Bill black, feet pale yellow.In none of the seven specimens before me is the sex indicated ; butas they show no differences from the specimen described above, I i^re-sume there is no difference between the male and female.Tahle of dimensions. 22 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM.4. MYADESTES DOMIXICAXUS Stejneger.[Platell, Fig. 5.]1876. ? Mi/iadestes genibarbis Lawe. Pr. U. S. Nat. Mus. 1878, p. 53.U. S. Nat. Mus. No. 77801. (