1938 ] 
North American Caddis Flies 
11 
Family POLYCENTROPODIME 
Cernotina pallida (Banks), 1904d, p. 214. ( Cyrnus ) 
Lectotype, male. — High Island, Maryland, June 17. No. 
11539. 
This interesting species belongs in the subfamily Psy- 
chomyiinse. The male genitalia are very distinctive, fig. 18. 
The only females in the M. C. Z. under this name do not 
belong to this species, so that as yet an allotype cannot be 
designated. 
Cyrnus fratermis Banks. — see Nyctiophylax fraternus 
(Banks) 
Cyrnus pallid us Banks. — see Cernotina pallida (Banks) 
Plectrocnemia albipuncta Banks. — see Polycentropus albi- 
punctus (Banks) 
Plectrocnemia aureola Banks, 1930a, p. 130, figs. 2, 3, 5. 
Lectotype, male. — Baddeck, Cape Breton Island, Nova 
Scotia, July 20, 1928. No. 16323. Lectoallotype, female . — 
Same data. 
Illustrations of the male genitalia are given in fig. 13. 
Plectocnemia cinerea (Hagen), 1861, p. 293. (Polycen- 
tropus) 
Lectotype, male. — St. Lawrence River, Canada, 1859, 
Osten Sacken. No. 11039. Lectoallotype, female. — Same 
data. 
The genitalia of this species have been illustrated by 
Betten (1934, pi. 24, figs. 1-8) under the specific name 
canadensis Banks. 
Plectrocnemia flavicornis (Banks), 1907b, p. 162, fig. 1. 
( Holocentropus ) 
Lectotype, male. — Washington, D. C. No. 11526. 
This is a synonym of cinerea (Hagen) . 
Plectrocnemia pallescens Banks, 1930b, p. 231, fig. 3. 
Lectotype, male. — Put-in-Bay, Ohio, July 3, 1924, on 
Middle Bass Island, G. Townsend. No. 16322. Lectoallo- 
type, female. — Same data, but July 6, 1926. 
The genitalia of this specimen appear identical with those 
of cinerea (Hagen), but the color is lighter. It is my belief 
that the specimen is slightly teneral. In several species 
