AST. 21 OKTHOPTEKA OF THE PINCHOT EXPEDITION CAUDELL 6 



arable. Neither species seems to have been recorded before from 

 Barro 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 by 

 Allee. This species was not collected by the Pinchot expedition, but 

 it is entered here for the purpose of record and to introduce the 

 following 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 under 

 the emended name Tropidonotus. In 1831 Serville erected his genus 

 Tropinofus in the Orthoptera, and this generic name was emended 

 to Tropidonotus by Stal in 1878. In 1848 Gistel ® proposed the 

 generic name Xyleus to replace the preoccupied Servillean name. 

 Not knowing of this erection of a replacing name by Gistel, Bolivar 

 introduced 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 under 

 Gistel's name. 



GALAPAGOS ISLANDS 



The Orthoptera of the Galapagos have been rather fully covered, 

 Giinther in 1877 ' presented a report on the forms taken in these 

 islands by the expedition of H. M. S. Peterel; in 1889 ® Howard 

 listed a few forms ; and Scudder,^ in 1893, gave an illustrated report 

 of the Ortlioptera of the Galapagos Islands in which appears a 

 resume of earlier literature, the most comprehensive treatment of 

 the fauna of this region up to that time. In 1901 McNeill^** 

 reported on the Orthoptera of the Hopkins Stanford Galapagos 

 expedition 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 a 

 map of the islands comprising the Galapagos Group. The latest 

 comprehensive report on Galapagos Orthoptera is by Hebard,^^ 

 who treats the material collected by the expedition of the California 

 Academy of Sciences to the Galapagos Islands, 1905-6. A review 

 of 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<J2-1U4, 1889. 



» Bull. Mus. Comp. Zool., vol. 25, no. 1, 25 pp., 3 pis., 1893. 



'oProc. Washington Acad. Sci., vol. 3, pp. 487-506, 1901. 



"Proc. Washington Acad. Sci., vol. 4, pp. 411-454, pis. 26, 27, 1902. 



"Proc. California Acad. Sci., ser. 4, vol. 2, pp. 311-346, 1 pi., 11 flgs., 1920. 



