276 



tion. Ventral aspect as in Figure 2, the apices of legs not in a straight 

 transverse line. In another specimen — which may be another species 

 or the other sex of the present one — the legs terminate in an almost 

 straight line. 



Described from specimens collected in Jenny Creek, Tolland, Col., 

 July 12, 19 1 6 (B. Green). 



The larva of this species differs from any other described from 

 North America in the armature of the dorsum. In some species of 

 Bibiocephala the larvae have indications of chitinized points, or warts, 

 on the dorsum, but in none are they so well developed as in the pres- 

 ent species, the nearest approach being an unnamed Colorado species 

 figured by Kellogg in his revision of the group, Figures 11 and 12 of 

 his paper ('00b). 



Prof. T. D. A. Cockerell informs me that the only species re- 

 corded from the region where Miss Green obtained the larvae and 

 pupae of the above species is Bibiocephala grandis Osten Sacken. It 

 is not improbable that the larvae belong to this species, but on the 

 evidence at hand I do not feel justified in suggesting that they do. 



Principal Papers on North American Blepharoceridae 



Kellogg, V. L. 



'00. Notes on the life-history and structure of BlepJiarocera cnpi- 



tata Loew. Ent. News, 11 : 305-318. 

 '00a. A new blepharocerid. Psyche, 9 : 39. 

 '00b. The net-winged midges (Blepharoceridae) of North America. 



Proc. Calif. Acad. Sci., ser. 3, Zool., 3 : 187-232. 

 '07. Blepharoceridae. Gen. Ins., Fasc. 56. 



Riley, C. V. 



'81. Note on Blepharoceridae. Am. Nat., 15 : 438-447. 



Family CULICIDAB 



No family of Diptera has received so much attention within the 

 past twenty-five years as the Culicidae. This is due entirely to the 

 fact that they are of very great economic importance, since in addi- 

 tion to their being in most cases a great annoyance to man because of 

 their bloodsucking habits several species are directly instrumental in 

 the transmission of various fevers, and other diseases, prevalent in 

 the warmer parts of the world — such as malaria, yellow fever, and 

 filariasis. The literature on the family is remarkably copious, and as 

 it is generally accessible in America it is not the purpose of the writer 



