AQUATIC INSECTS IN NEW YORK STATE Boos 
influenced by the veins of the wing, though apparently constant 
in position in a given species. 
The larvae live in running water. The head has a pair of 
slender antennae; the cephalothorax and the following seg- 
ments each with a conical process bearing a bunch of bristles; 
pupa flattened, inactive and free, inclosed in a semioval shell- 
like skin, the anterior end with erect breathing tubes; on the 
underside the skin is soft and transparent. 
Genus BLEPHAROCERA Macq. 
This genus is distinguished from the other genera of this 
family, in that the eyes are holoptic (i. e. contiguous); bisected 
by an unfaceted cross band or by a single groove. The radius 
(Comst.) is three branched (i, e. the second longitudinal vein is 
not furcate); and the vein M, with its basal end free and begin- 
ning in the middle of the wing. See figure in Comstock’s Manual, 
p. 433. 
Blepharocera capitata Loew 
Berl. Ent. Zeit. 1868. Centur. 4; p.43 
So far, but one species of this family, Blepharocera 
capitata Loew, has been recorded from this State. It is 
very abundant in several of the ravines about Ithaca, and larvae 
have been found in other parts of the State. The first adults 
observed the past year, emerged about June 1, and they had 
all disappeared by July 15. The fact that their season of flight 
is a short one, and that they are found only near the water’s 
edge in deep and comparatively inaccessible ravines, accounts 
for the scarcity of the species in collections. The life history of 
this species has already been given by Prof V. L. Kellogg in 
Entomological News for January 1900, p.805-18; and the imago 
has been described by Loew in the Berliner Entomologische 
Zeitschrift, 1863, p.48. The life history may be briefly stated as 
follows: 
The eggs have not yet been discovered. The larvae may be 
found throughout the month of May, in shallow but swiftly 
flowing water. About Ithaca they have been found most fre- 
