264 
Fig. 31—Nymph of Nemocapnia carolina. 
1940,-C. O. Mohr-& B. D; Burks, 12; April 
16) 19360 H.nH: (Rosse & CaO” Montielics: 
April 21, 1936, T. H. Frison & C. O. Mohr, 
19; April 14, 1940, C. O. Mohr & B. D. 
Burks, 29. SHoats, White River: April 5, 
1940, C. O. Mohr & B. D. Burks, 19. 
VIRGINIA—SouTH HILL, Roanoke River: 
Feb. 16, 1937, 6 4, 9 Q. REMINGTON, Rappa- 
hannock River: March 21, 1940, T. H. Frison 
et al. 6&, 2@, nymphs and exuviae. RucK- 
ERSVILLE: March 21, 1940, T. H. Frison et al., 
1¢. Lyncusurc, Elk Creek: March 22, 1940, 
T. H. \Frison; ef ‘al, 86,502. RICHMOND, 
Robert E. Lee Bridge: 19. 
Capnia opis (Newman) 
Chloroperla opis Newman (1839, p. 89). 
Original description, ¢, @. 
Ittinois NATURAL History SURVEY BULLETIN 
Vol. 22, Arta 
Capnia vernalis Needham & Claassen (1925, 
p. 256). Misidentification. 
Capnia opis Ricker (1938, p. 134). Proper 
synonymy revealed. 
Ricker (1938) has shown that opis is 
the same species as that redescribed and 
recorded by Needham & Claassen (1925) 
as vernalis Newport (1851). Reference 
to the specific name of opis by Needham 
& Claassen (1925) and by Claassen 
(1928) is entirely omitted. 
Ricker (1938) further states that ver- 
nalis is not a synonym of opis but a distinet 
species. hus far, among the numerous 
specimens of Capnia that I have examined 
from North America, I have been unable 
to recognize more than one species, opis 
(— vernalis in the sense of Needham & 
Claassen), of Capnia from eastern North 
America. If vernalis is a distinct species, 
as Ricker states, I am unfamiliar with it, 
and it must have a much different general 
distributional range than opis. Experience 
with long series of specimens unquestion- 
ably of the same species has shown me 
that slight variations in structural char- 
acters are to be expected, and it is probable 
that specimens I consider within the limits 
of variation of opis are comparable to the 
specimens which Ricker (1938) consid- 
ered a separate species by the name of 
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Fig. 32—Capnia opis. 
vernalis. Fig. 32 shows structural char- 
acters of specimens of opis taken from 
Illinois. | 
Capnia opis was originally described from 
specimens collected in Newfoundland, and 
Needham & Claassen (1925) have added 
records, under the name of vernalis, from New 
