NO. 1530. 



THE DECTJCIN.E OF NORTH AMERICA— CA UDELL. 



309 



Type. — ZacyvJopfci'a <(fr!j>t'j)n /■"<., now species. 



This is a veiy distinct yenus. It is appuroiitly the most nearly 

 related to the preceding- one, but does not resc^nhle that genus in any 

 way. The legs are longer and more slender than connnon in this 

 group. 



But one species is known, the type from Nevada. It is described 

 as follows: 



ZACYCLOPTERA ATRIPENNIS, new species. 



J)t script ion. — Male, female uid<nown. Head slightly broader than 

 the anterior portion of the pronotum. into which it is modeiately well 

 inserted; vertex very short and narrow, but not compressed, scarcely 



Fig. is. — ZACYCLOPTERA ATRIPENNIS. ADULT MALE. 



half as broad as one of the eyes; e3'es rounded, moderate in size, and 

 very prominent, being" semiglobular. Antenmc slender, the basal seg- 

 ment about half as broad as one of the eyes, being a little broader 

 than the vertex as viewed from in frOnt. Pronotum and wings as 

 described under the genus. Legs long, the pos- 

 terior femora but little swollen basalh", shaped as 

 in tlie genus Piafiiostira. All the femora are 

 sparsely spinose below on both margins, the spines 

 usually little more than acute tubercles. Abdo- 

 men mostly, at least in dried specimens; nearly 

 concealed l)eneath the ample wings; cerci short 

 and 1)road, the depressed tip formed into two acute 

 inwardlv directed teeth, the tips slightlv decurved 

 (tig. 19)'. 



General color a very light ])rown, nearh" white, except the elytra 

 and top of the pronotum. which are brown, and the wings, which are 

 uniforml}^ piceous. The upper portion of the lateral lobes of the 

 pronotum is brown, and separated from the brownish disk b}^ a mod- 

 erately broad pallid streak, less distinct posteriorly. These pallid 

 streaks approach slightly in the middle, giving the pronotum some- 

 what the appearance of possessing- lateral carina'. The eyes are 

 brown and the top of the head and the tibia? are slightly embrowned, 

 the tarsi and a))domen more so. 



Fig. 19.— Zacycloptep.a 

 ATRIPENNIS. Tip of 



ABDOMEN OF MALE 

 FROM ABOVE. 



