TREPIDULUS.— ANCONIA. 185 



1. Trepidulus rosaceus, Scudd. 



Mestobregma rosaceum, Scudd. Psyche, ix. p. 91 (1900) \ 



Trepidulus rosaceus, McNeill, Proc. U.S. Nat. Mus. xxiii. p. 398 (Jan. 1901) *. 



Araeopteryx penelope, Caud. Canad. Ent. xxxiii. p. 103 (April 1901) 3 . 



Hab. Nokth Ameeica 1_3 , Yuma (A. P. Morse), Phoenix (B. E. Kunze), and Florence, 

 Pinal Co., Arizona (C. B. Biederman), Las Cruces, New Mexico (T. D. A. Cockerell), 

 San Bernardino (Coquillett), Palm Springs, and Tehachapi, California (A. P. Morse). 



Although no definite records seem to be at hand pointing to the occurrence of 

 this insect in Mexican territory, that referring to Yuma, Arizona, on the border-line 

 between the two countries, is practically equivalent to one. 



2. Trepidulus gracilipes, Caudeii. 



Mestobregma gracilipes, Caud. Proc. U.S. Nat. Mus. xxviii. p. 271, fig. 5 (1905) \ 

 Hab. North America, Nogales, Arizona, Huachuca Mts. (E. J. Oslar l ). 



[3. Trepidulus hyalinus, Scudd. 



Mestobregma hyalinum, Scudd. Psyche, ix. p. 92 (1900) \ 



Hab. North America, various localities in California (A. P. Morse l ). 



This insect approaches much more closely to T. rosaceus than to any of the species 

 of Trachyrhachis, and with T. gracilipes leads directly to it, so far as the structure of 

 the sides of the pronotum is concerned. The hind femora and head-characters are 

 practically the same in all three insects.] 



ANCONIA, Scudder. 

 Anconia, Scudder, Ann. Rep. Chief Eng. 1876, Append. J J, p. 514 (1876). 



Anconia inhabits the arid regions of the South-western United States, where three 

 species are known to occur, and possibly extends to Northern Mexico. These insects 

 resemble some of the members of the genus Heliastus in a few of their charac- 

 teristics. They may be known by the subjoined table : — 



Table for separating the Species of Anconia. 

 A. Tegmina and wings very long and narrow, the former evenly and 

 rather profusely mottled with brown. Entire insect often pale 



green or greenish 1. integra, Scudd. 



AA. Tegmina and wings shorter and broader, general colour testaceous 

 or cinereous, the tegmina less profusely mottled with brown. 

 b. Size small; the tegmina with very few maculations. Hind 



wings faintly cserulean [2. grisea, sp. n.] 



bb. Size large, robust ; the tegmina conspicuously maculate. Hind 



wings deep cserulean [3. caruleipennis, sp. n.] 



biol. CENTR.-AMER.. Orthopt., Vol. II., January 1906. 2 Bb 



