1938 ] 
North American Caddis Flies 
41 
Platycentropus amicus (Hagen), 1861, p. 265. ( Halesus ) 
Lectotype, female. — New Orleans. No. 10690. 
No definite placement of this species can be made until 
well associated males are found, or good structural char- 
acters for separating the females. 
Platycentropus hostis (Hagen), 1861, p. 266. ( Halesus ) 
Lectotype, male. — North Red River, Canada, 1858, Uhler. 
No. 10689. Lectoallotype, female. — Data illegible. 
This species has recently been synonymized with indicans 
(Walker) by Milne (1936). 
Platyphylax alascensis Banks. — see Hesperophylax alas- 
censis (Banks) 
Platyphylax atripes Hagen. — see Dicosmoecus atripes 
(Hagen) 
Platyphylax occidentalis Banks. — see Hesperophylax occi- 
dentals (Banks) 
Pycnopsyche similis Banks. — see Stenophylax similis 
(Banks) 
Stenophylax brevipennis Banks. — see Limnephilus brevi- 
pennis (Banks) 
Stenophylax calypso Banks. — see Drusinus calypso (Banks) 
Stenophylax gilvipes Hagen. — see Dicosmoecus gilvipes 
(Hagen) 
Stenophylax lepidus (Hagen), 1861, p. 269. ( Enoicycla ) 
Lectotype, male. — Pennsylvania. No. 10697. 
The male genitalia have been figured by Betten (1934, 
pi. 50, figs. 4-6). Lepida was sunk by Milne as a synonym 
of subfasciata (Say) but is distinct from that species. 
Stenophylax pacificus Banks. — see Limnephilus pacificus 
(Banks) 
Stenophylax similis (Banks), 1907a, p. 122, pi. 9, fig. 22. 
( Pycnopsyche ) 
Lectotype, male. — Chatham, Michigan, August 23, 1900. 
No. 11659. 
The male genitalia show this to be a synonym of guttifer 
Walker. 
