444 NEW YORK STATE MUSEUM 



17 S. p i c t i p e s . Male 



18 S. meridionale. Male 



19 S. V e n u s t u m , var. p i s c i c i d i u m . Female 



20 S. p i e t i p e s . Female 



21 S. o c li r a c e u m . Hind metatarsus of female 



PLATE 39 



Corethra plumicornis 



1 Larva of C. p 1 u m i e o r n i s . xl2 



2 Pupa of same. xl2 



2a Breathing tube of pupa. xllO 



3 Ventral view of head. x40. e Labium, w Maxillae 



4 Lateral view of head, larva, a Antennae. 6 Filaments of third meta- 



mere of Meinex't. c Leaflike appendages. I Labrum. f Fans. 

 m Mandibles, x Maxilla 



5 Swimming paddles of pupa. xl5 



6 Anal segment of larva. x40 



7 Head of female. xl5 



8 Genitalia of male. x40 



9 Wing of female. xl5. C Costa. Sc Subcosta. R Radius. M Media. 



Cu Cubitus. A Anal 



10 Wing of male. xl5 



11 Wing of C. a 1 b i p e s n. sp. xl5 



PLATE 40 



Corethrella brakeleyi Coquillett 



1 Full grown larva, dorsal view. x25. a Antenna, b Lateral sclerite of 



the head showing the spines, d Dorsal sclerite of the head 



2 Ventral view of larval head. x25. Ir Labrum. md Mandible, b Lat- 



eral sclerite of the head. I Labium 



3 Antenna of larva. xllO 



4 Labium of larva. xllO 



5 Larval mouth parts, ventral view. xllO. md Mandibles, mx Maxilla: 



i Ventral lobe of the maxilla (perhaps cephalic prolongation of 

 the head sclerite; I Labium 



6 Dorsal view of left mandible of larva. xllO 



7 Fifth tarsal joint and claws of hind foot of adult male. xl90 



8 Antenna of adult male. x37^ 



9 Wing, denuded of hair. Female. x48 



10 Last four abdominal segments of pupa. xSl^j 



Culex sylvestris 



11 Long claws of middle foot of male. xl90 



12 One of the claspers of the male. x48 



PLATE 41 



Pelorempis n. gen. 



1 Larva, ventral view. Thorax and abdomen diagrammatic. x7 



2 Head of same, dorsal view. x7 



3 Mouth parts, ventral view. x40. I Labium, t Maxillae, m Mandible 



4 Dorsal aspect of breathing apparatus on the eighth segment. x20. 



s Spiracle 



5 Dorsal aspect of left mandible. x40 



