1936 ] 
Notes on Some Hydropsy chidae 
129 
There are minor differences in these four forms, all of 
which, scalaris hageni, incommoda, phalerata, I consider 
distinct species, judging by the characters used in the sepa- 
ration of European species. 
Mr. Milne has put at least two (perhaps three) forms 
under Hydropsyche depravata Hagen. H. depravata was 
described from a female from Georgia; a male from 
Georgia (same handwriting) appears to be the same 
species and Milne makes it the neoallotype. This has the 
apical part of the clasper slender, curved, and scarcely nar- 
rowed toward tip ; the superior plate has a deep, triangular 
emargination. 
In New England, Eastern New York, and Pennsylvania 
there is a fairly common species of the same group as H. 
depravata. It is as large as H. scalaris, darker and with 
more numerous and smaller spots, and in the male the 
eyes widely separated. The female is readily separated 
from H. scalaris by having the mid basitarsus dark and 
scarcely swollen (in scalaris extremely broad and very 
pale) . 
The apical part of the clasper is hardly as long as in 
H. depravata and plainly tapering toward the tip; the 
superior plate is deeply, acutely indented, the lobe each 
side being narrowed near the tip and pointed. This is 
probably H. reciproca Walk., and I shall so consider it. 
The type of Walker’s species is a female and has lost the 
middle legs. H. depravata is probably the same. 
From the western part of New York and further west is 
a form similar in size and markings. The superior plate 
has only a rather shallow, rounded emargination, and the 
apical part of the clasper is plainly somewhat clavate to- 
toward tip. This is certainly a different form from the 
Eastern species and I have named it 
Hydropsyche separata sp. nov. 
The fore wings are much spotted with gray, few in ex- 
treme apical part; the penis, seen from side, is rounded at 
tip, slightly swollen and almost pointed above (in recip- 
