259 



The males are of a dead black color with the carina? and sutures slen- 

 derly pale, at least on the face, the legs are more or less lineated with pale 

 and the posterior tibiae and tarsi are pale faintly tinged with brown, with 

 the claws blackish. Apical half of the last joint of the antenna; pale brown. 

 Elytra deep smoky brown becoming more transparent toward their tips, 

 with brownish nervures. 



In this species the front is oval and rather broad but more contracted 

 between the eyes than in lineatipes. The vertex is truncated at base ; the 

 pronotum is rather deeply and angularly emarginated behind, the scutellum 

 is short with an unusually large and abrupt apex which is rounded at tip 

 and ecarinate, the median carinse becoming obsolete opposite the lateral 

 sinuses. The pygofers of the female are rather small and parallel and in 

 the male the aperture of the pygofers has much the form it has in pellucid i 

 but the stiles are smaller and less divergent above, becoming nearly parallel 

 at their base which is included within the ventral sinus of the pygofers. 



Colorado. Described from many examples received from Prof. C. P. 

 Gillette including both the long and short winged forms of both sexes. 

 This is a very pretty and interesting species which seems to be quite vari- 

 able in the extent of the black markings on the female. Like pellucida and 

 lineatipes the two sexes differ widely in color. 



GENUS ACHOROTILE, Fieb. 



Fieber, Verh. der Zool. Bot. Ges. Wien, XVI, p. 521, 1866. 



Cicad. d'Europe, I, p. 92, 1875; 88, pi. S, 1876. 

 Sahlberg, Cicadariae, p. 472, 1871. 

 Ashmead, Ent. Am., V, p. 27, 1889. 



ACHOROTILE ALBOSIGNATA, (Dahlb.) 



Delphax albosignata, Dahlb. Vet. Akad. Handl., 1850, p. 199. 



Stal, Of. Vet. Akad. Forh., XI, p. 196, 1854. 

 Delphax fuscinervis, Dahlb., Vet. Akad. Handl., 1852, p. 113. 

 Ditropis albosignata, Sahlbg.. Cicadariae, p. 472, 1871. 

 Achorotile albosignata, Fieb., Verh. der Zool. Bot. Ges. Wien, XVI, 



p. 521, 1866. 



Fieber, Cicad. d'Europe, IV, p. 89, 1876. 



Van Duzee, Bui. Buf. Soc. Nat. Sci., V, p. 192, 1894. 



Numerous immature examples of this species were taken by me about 

 a bog swamp at Concord, N.Y. in May 1SS8, and a few scattering speci- 

 mens elsewhere. An examination of the mature form may show this to be 

 distinct from the European species but it seems to me very unlikely that 

 such would be the result. 



