194 Journal New York Entomological Society. fvoi- x. 



second basal cell shorter tlian the first, petiole of first submarginal cell nearly one- 

 half as long as that cell. Length, 4 mm. 



Habitat. — Chester, New Jersey. 



Two female specimens collected September 10 and 14 by Prof. J. 

 B. Smith. Type No. 6702, U. S. N. M. 



ILLUSTRATIONS OF THE LARV^ OF NORTH 

 AMERICAN CULICID^.— If. 



By Harrison G. Dyar, Ph.D. 



(Plates XVT-XIX. ) 

 I have previously published illustrations of four species of Culicidae 

 in this journal ( Journ. N. Y. Ent. Soc, IX, 177-182, 1901) ; the 

 present paper is a continuation of the subject. 



Culex canadensis TJieobald. 



£,i;X- — Laid singly, not adherent, scattered or adhering in irreg- 

 ular masses by surface tension only. Fusiform, the ends rounded, the 

 greatest diameter at the third nearest the micropyle ; one side flat- 

 tened. Entirely black, covered with clear granules which rest in re- 

 ticular hollows of the surface ; a small colorless cushion at the micro- 

 pyle. Length, .8 mm.; diameter, .2 mm. 



Stai;e I. — Head rotinded, darkly infuscated, antennae slender, uni- 

 form, the tuft at the middle of the joint slight; dark throughout. 

 Body hairs normal, simple ; air tube colorless at the base, the ter- 

 minal third darkly infuscated, the line dividing these areas sharp, 

 oblique ; a sparse double pecten on the clear part. Anal segment 

 with a dorsal dark plate and terminal tuft ; no ventral brush. Lateral 

 comb of the eighth segment a series of simple thorn-shaped spines, 

 about 6 in number, in a straight transverse row. 



Stage II. — The head is pale brown rather than blackish. Anten- 

 nae all brown, the slight tuft at the middle of the joint. Body hairs 

 stouter, with distinct basal tubercles on the thorax. Air tube com- 

 pletely chitinized, brown with a double pecten on the posterior basal 

 half, followed by a little hair tuft. Tube conically tapered, about 

 two and a half times as long as wide. Anal segment with a broad 

 dorsal dark plate, terminal tuft and small ventral brush arising from a 

 transversely barred area at the tip of the segment ; also several siiiall 



