THE CANADIAN ENTOMOLOGIST. 



201 



CULICIN/K. 



Larvm£ never insectivorous, their 



mouth-parts fitted for directing 



current of water into mouth, for 



sifting and brushing. 

 Mouth-brushes of many spreading, 



slender hairs, some of which are, 



in some cases, h'ghtly pectinate 



on about the distal sixth ; the 



hairs project forward. 

 Maxilla conical, no liooked spines, 



but many long, movable hairs 



and short hairs. 

 Lateral comb of mandible of 



many movable, long, triangular 



plates, their base at an acute 



argle with top of mandible. 

 Marginal comb of mandible 15-20 



immovable spines. 

 Biting part small. 

 Antenna near anterior margin of 



head, eyes near middle of sides of 



head. 

 Pup^ with anal flaps longer than 



broad. 

 Adults with femora devoid of out- 

 standing scales except in the 



genus ^Meomyia, where they 



form a fringe along the upper and 



the lower side of the apices of the 



femora and the bases of the tibite. 



The wing-scales of this genus are 



broad, and its larval and pupal 



characters typically Culicid. 



The eggs of Psorophora are distinctive, being symmetrically ovate 

 and distinctly differing from the ihirtyodd of the Culicid eggs which I 

 have seen, but the difference is easier to see and illustrate than to describe. 

 The others are not nearly so ovate, generally unsymmetrical, and their 

 small diameters proportionately less as compared with the long diameter 

 than in the Psorophora eggs. 



PSOROPHOKIN/E. 



Larv^ insectivorous, their mouth- 

 parts fitted for seizing and tear- 

 ing- 



Mouth-erushes a few appressed 

 plates, heavily pectinate along the 

 entire inner margin, and directed 

 obliquely backward beneath head 

 or held out at right angles to it. 



MaxilL/« trapezoidal, with many 

 curved spines, a few short hairs. 



Lateral comb of mandible a few 

 heavy, immovable spines, their 

 base almost at right angles with 

 top of mandible. 



Marginal comb of mandible ab- 

 sent. 



Biting part very large. 



AntenN/E near middle of sides of 

 head, eyes near posterior margin. 



Pup.-E with anal flaps as broad as 

 long. 



Adults witk femora and tibiae 

 bearing many outstanding scales 

 irregularly and thickly arranged 

 around them, never a fringe. 

 Wing-scales narrow. 



