42 
Psyche 
[March 
Family SERICOSTOMATIDiE 
Alepomyia bryanti Banks. — see Lepidostoma bryanti 
(Banks) 
Arcadopsyche prominens Banks. — see Lepidostoma promi- 
nens (Banks) 
Atomyia modesta Banks. — see Lepidostoma modesta 
(Banks) 
Brachycentrus incanus Hagen, 1861, p. 272. 
Lectotype, female. — Washington, D. C., April, 1859, 0. 
Sacken. No. 10455. 
This is probably numerosus (Say) or lateralis (Say). To 
date, however, diagnostic characters have not been found 
for the females of this genus. 
Brachycentrus occidentalis Banks, 1911, p. 355, pi. 13, fig. 32. 
Lectotype, male. — Bon Accord, British Columbia, May 14. 
No. 11685. 
The long, separate cerci and slender, angled claspers, 
fig. 88, are diagnostic for this western species. 
Brachycentrus similis Banks, 1907a, p. 124, pi. 9, fig. 21. 
Lectotype, male. — Tabernash, Colorado, August, E. S. 
Tucker. No. 11684. Lectoallotype, female. — Boulder, 
Colorado, August 9, at light, T. D. A. Cockerell. 
This species is a synonym of americanus Bks. The short, 
fused cerci and bilobate claspers, fig. 87, are diagnostic for 
this widespread species. 
Dasystoma rusticum Hagen. — see Micrasema rusticum 
(Hagen) 
Helicopsyche arizonensis Banks, 1907a, p. 125. 
Lectotype, female. — Nogales, Arizona, July, 1903, Oslar. 
No. 11694. 
Helicopsyche californicus Banks, 1899, p. 210. 
Lectotype, male. — Colton, California. No. 11696. 
The genitalia are remarkably similar to those of borealis 
(Hagen). 
Helicopsyche borealis (Hagen), 1861, p. 271. ( Notidobia ) 
Lectotype, male. — St. Lawrence River, Canada, 1859, O. 
Sacken. No. 10939. 
