AQUATIC INSECTS IN NEiW YORK STATB 333 



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 radiua 

 (Oomst.) is three branched (i. e. the second longitudinal vein is 

 not furcate) ; and the vein M3 with its basal end free and begin- 

 ning in the middle of the wing. See figure in Oomstock's Mwnual, 



p. 433. 



Blepharocera capitata Loew 



Bed. Ent. Zeit. 1863. 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.305-18; and the imago 



hae been described by Loew in the Berliner EntomologiscJie 



Zeitschrift, 1863, p.43. 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- 



