AQUATIC INSECTS IN NEW YORK STATE 495 



S Ventral view of head. x40. e Labium, x Maxillae 



4 Lateral view of head, larva, a Antennae, ft Filaments of thh-d meta- 



mere of Meinert. c Leaflike appendages. I Labrum. f L'ans. 

 m Mandibles, x Maxilla 



5 Swimming paddles of pupa. xl5 



6 Anal segment of larva. x40 



7 Head of female. xl5 



8 Grenitalia of male. x40 



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



Cm Cubitus. A Anal 



10 Wing of male. xl5 



11 W^ing of C. a 1 b i p e s n. sp. xl5 



PLATE 40 



Corethrella brakeleyi Coquillett 



1 Full grown lai"va, dorsal view. x25. a Antenna. & 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. 6 Lat- 



eral sclerite of the head. I Labium 



3 Antenna of larva, xllO 



4 Labrum 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 

 (5 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. -aZlV-i 



9 Wing, denuded of hair. Female. x48 



10 Last four abdominal segments of pupa. x37^4 



CTulex 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. 1 Laliium. x Maxillae, m Mandible 



4 Dorsal a.sipect of breathing apparatus on the eighth segment. x20. 



s Spiracle 



5 Dorsal aspect of left mandible. x40 



6 Dorsal aspect of labrum 



7 Swimming paddles of the pupa. x7 



8 Pupa. x7 



9 A scale from upper surface of the labrum 



10 Head of female 



11 Lateral aspect of head. Female 



12 Fore tarsal claw of female 

 1.3 Fore tarsus of female 



14 Wing of female. C Costa. Sc Subcosta. R Radius. .1/ Media. Cu 

 Cubitus 



