1938 ] 
North American Caddis Flies 
13 
The male genitalia of this species are very distinctive, 
especially the sclerotized point on the mesal side of the 
clasper. They have been illustrated by Mosely under the 
name Cyrnellus zernii Mosely (1934, p. 142), which becomes 
a synonym of marginalis. 
Nyctiophylax moestus Banks, 1911, p. 359. 
Lectotype , male. — Peachland, British Columbia, August 
19, 1909, J. B. Wallis. No. 11536. 
A synonym of vestitus Hagen. 
Nyctiophylax vestitus (Hagen), 1861, p. 293. ( Polycen - 
tropus) 
Lectotype, female. — Washington, D. C., Osten Sacken. 
No. 11036. 
The color and venation of this specimen associates it 
indubitably with the concept of this species as used by 
Banks, Betten and others. 
Phylocentropus lucidus (Hagen), 1861, p. 294. ( Polycen - 
tropus) 
Lectotype, male. — Trenton Falls, New York, 1858, Osten 
Sacken. No. 11037. 
The genitalia of this species also have been figured by 
Betten (1934, pi. 23, figs. 9-14). 
Phylocentropus placidus (Banks), 1905b, p. 15. ( Holocen - 
tropus) 
Lectotype, male. — Washington, D. C., August 25. No. 
11540. 
The essential features of the genitalia of this species have 
been illustrated by Betten (1934, pi. 23, figs. 2-18). The 
species carolinus Carpenter has been placed as a synonym 
erroneously by Milne. 
Polycentropus albipunctus (Banks), 1930a, p. 131, figs. 6, 9. 
( Plectrocnemia ) 
Lectotype, male. — Point Brevis, Cape Breton Island, Nova 
Scotia, July 10, 1928. No. 16324. Lectoallotype, female . — 
Same data. 
The genitalia of the male of this species are shown in 
fig. 17. 
Polycentropus arizonensis Banks, 1905b, p. 16. 
Lectotype, male. — Huachua Mts., Arizona, June 21. No. 
