30 PROCEEDINGS OP THE NATIONAL MUSEUM vol. 78 



Thorax black, gray pollinose, the chaetotaxy as in frenchii; scutel- 

 lum with four strong pairs of marginal bristles, also intermediate 

 weaker ones besides the extremely week apical pair. 



Abdomen black, gray pollinose, first segment bare, second and 

 third segments with marginal bristles, the fourth wholly covered 

 except at extreme base, bristles at apex strongest. Abdominal hairs 

 depressed. 



The genitalia do not appear to have any characters to specifically 

 differentiate the species from some of the closely allied species. 

 They are light brown or yellowish in color, shining, and, when 

 viewed from behind, the forceps at greatest width are nearly one- 

 half their length; outer forceps stout; inner forceps a little longer 

 than the outer and bearing at base a small but conspicuous tuft 

 of upwardly directed hairs. 



Mid tibiae with one large bristle and a smaller one above it on the 

 outer front side near middle. Hind tibiae evenly and densely ciliate 

 without a longer bristle in male; evenly, though less densely ciliate 

 and bearing one longer bristle in the female. Front pulvilli of male 

 smoky black and decidedly longer than last tarsal joint. 



Wing venation normal, third vein at base with two or three 

 bristles as in frenchii. 



The material examined at the United States National Museum 

 consisted of the type, a male reared from Schizura ipomoeae Double- 

 day, Pullman, Wash., and two females of the same lot from Coquil- 

 lett's and Aldrich's material. 



Piperl is exceedingly close to schizurae (Townsend) and can be 

 separated from that species with difficulty. Nearest comparable in 

 size is anisotae from which it is distinguished in the male by the 

 densely and evenly ciliated hind tibiae without longer bristle, in fe- 

 male by its shorter and broader third antennal joint, narrow para- 

 facials, and total absence of any strong bristles outside of the frontal 

 row. 



Townsend ^^ placed Sturmia schizurae Coquillett, in Argyrophylax 

 Brauer and Bergenstamm. 



The specific name was preoccupied by ArgyrophyJax schizurae 

 Townsend, so he gave it a new name, pipei'i. According to Walton,^^ 

 Townsend was mistaken in referring schizurae Coquillett to Argyro- 

 phylax and this is obvious from a study of the type description. 

 Some of the principal characters of the genus Argyrophylax are the 

 absence of ocellar bristles, the narrow cheeks, and weakly ciliated 

 facialia, and as schizurae Coquillett has not these characters, it can 

 hardly be an Argyrophylax and is referred by the writer to Achaeto- 

 neura. Since the name schizurae is preoccupied in Achaetoneura, 



22 Smiths. Misc. Colls. No. 1803, p. 98, 1908. 

 «Proc. Ent. Soc. Wash., vol. 18, p. 189-192, 1916. 



