INSECTS OF THE ORDER ORTHOPTERA OF THEPINCHOT EXPEDITION OF 1929 ^ By A. N. CaudellEntomologist, Bureau of Entomology, United States Department of Agriculture The Orthoptera brought back in 1929 by the Pinchot Expeditionto the South Seas were mostly taken on Barro Colorado Island, CanalZone, and in the Galapagos Islands. This material, numbering 66specimens of 20 species, represents no new genera and but one newspecies. There are, however, a number of new geographical records.For convenience the following report is separated under geo-graphical headings. All specimens bear the Pinchot expeditionlabel, and one indicates the collector, Dr. A. K. Fisher. Some alsobear the Accession No. 105848.WEST INDIESNymphs of two well-known roaches comprise the only Orthopterabrought b}' the expedition from the West Indies. They are asfollows : Family BLATTIDAEPeriplaneta australasiae Fabricius: One small nymph labeled " G. Cayman, W. I., Apr. 17, 1929."Pycnoscelus surinainensis Linnaeus : One immature specimenbearing same data as above.BARRO COLORADO ISLAND. CANAL ZONEThe artificial island of Barro Colorado, standing in an artificiallake resulting from the Panama Canal project, seems to be a natural-ist's paradise. Fairchild ^ presents a map of the island and its sur-roundings, together with several excellent photographs; and a smallbook by W. C. and M. H. Allee, entitled " Jungle Island," publishedin 1925, has to do with the flora and fauna of this island, but it con-tains no reference to Orthoptera. The only paper Imown to thewriter listing even in part the forms occurring on Barro Coloradois one by Allee ^ in 1926, which listed representative forms of various 1 The narrative of this expedition will be found in the book To the South Seas, by GiffordPinchot, published In 19.30.2 Journ. Heredity, vol. 15, pp. 99-102, 1924.5 Ecology, vol. 7, pp. 445-468, 1926.No. 2921.? Proceedings U.S. National Museum, Vol. 80, Art. 2197988?.32 1 2 PROCEEDIlSrGS OF THE NATIONAL MUSEUM vol.80 stratifications of the tropical forest. No list of the Orthoptera ofthe island as a whole has yet appeared, and special collections shouldbe formed before such a list approaching completeness is attempted.All the Orthoptera taken here were collected on May 3, 1929.Family TETTIGONIIDAESubfamily Phaneropterinae Insara holivari Griffini : Two adult males. The National Museumalso contains a male of this species taken on the island by S. W. Frost,January 21, 1929. Subfamily LiSTROSCELiNAE Phlugis teres De Geer: One adult female. A female taken by N.Banks on the island on June 26, 1924, is in the National Museum.Family ACRIDIDAESubfamily AcridinaeAmMytropidia i7isignis Hebard : One adult male.Orphulella 'punctata De Geer : Three male and three female adultsand one immature female. All these are of the brown phase, butspecimens of both green and brown forms were taken on the islandb^^ P. Rau and are in the National Museum.Subfamily Oedipodinae Heliastus venezuelae Saussure : A sing-le female is labeled " Fromto^boat 2 days out from Panama, July 23, 1929." Thus its exact localityof origin is unknown, but it is probably not Barro Colorado Island.Aside from Paulinia acuminata De Geer, which is included by Heb-ard under the subfamily name Paulininae, this seems to be the onlymember of the subfamily Oedipodinae now in our Panamanian lists.Subfamily Cyrtacanthacrinae *Opshomala cylindrodes Stal: One female. The female of thisspecies and that of O. goethalsi Hebard are said to be almost insep- * Recently this rather well-established subfamily name for the spine-breasted grass-hoppers has been dropped by some writers in favor of the name Catantopinae. As pri-ority does not prevail in names higher than genera, one is allowed to use his judgmentin such matters. If any change at all were necessary the name Podisminae would bepreferable, as that is based on the oldest included generic name. Indeed this name Is somuch shorter and more euphonic that it would be chosen by the present writer foradoption except for the fact that the longer name Cyrtacanthacrinae is now so well ^established in general use. AST. 21 OKTHOPTEKA OF THE PINCHOT EXPEDITION CAUDELL 6 arable. Neither species seems to have been recorded before fromBarro Colorado, and the present specimen is here listed as cylin-drodes mostly because it is the older of the two names.Osmilia flavolineata De Geer : One male.Xyleus rosulentus Stal : One adult male taken on the island byAllee. This species was not collected by the Pinchot expedition, butit is entered here for the purpose of record and to introduce thefollowing matter for nomenclatorial interest : In 1822 Kuhl erected a genus of reptiles under the name Tro-pinotus, which was, as I am informed by Dr. Leonhard Stejneger,a nomen nudum. Four years later, Bois ^ validated the genus underthe emended name Tropidonotus. In 1831 Serville erected his genusTropinofus in the Orthoptera, and this generic name was emendedto Tropidonotus by Stal in 1878. In 1848 Gistel ? proposed thegeneric name Xyleus to replace the preoccupied Servillean name.Not knowing of this erection of a replacing name by Gistel, Bolivarintroduced for the same purpose the new name Diedranotus in 190G.Thus it is clear that Gistel's name Xyleus is the proper name for thi&genus, 7'ropinMus and Diedronotus falling into synonymy underGistel's name. GALAPAGOS ISLANDSThe Orthoptera of the Galapagos have been rather fully covered,Giinther in 1877 ' presented a report on the forms taken in theseislands by the expedition of H. M. S. Peterel; in 1889 ? Howardlisted a few forms ; and Scudder,^ in 1893, gave an illustrated reportof the Ortlioptera of the Galapagos Islands in which appears aresume of earlier literature, the most comprehensive treatment ofthe fauna of this region up to that time. In 1901 McNeill^**reported on the Orthoptera of the Hopkins Stanford Galapagosexpedition of 1898-99, and in the following year Snodgrass ^^ dis-cussed the acridid genera Schistocerca^ Sphingonotus^ and Hal-menus occurring in these islands. This paper is accompanied by amap of the islands comprising the Galapagos Group. The latestcomprehensive report on Galapagos Orthoptera is by Hebard,^^who treats the material collected by the expedition of the CaliforniaAcademy of Sciences to the Galapagos Islands, 1905-6. A reviewof previous records is also given. The latest mention of importance ^ Isis von Oken, 1826, p. 205.? Naturgescbichte des Thierreichs fiif hohere Schulen, p. xi, Stuttgart, 184S.. ''Proc. Zool. Soc. London, 1877, pp. 87-88. ? Proc. U. S. Nat. Mus., vol. 12, pp. 1