MAY FLIES AND MIDGES OB^ NEW YORK 325 



5 Caudal end of larva. x25 

 G Caudal end of pupa. x25 



7 Dorsal aspect of abdominal segments of pupa. x25 



Tanytarsus exiguus 



8 Larva. x20 



9 Fibrous case of larva and pupa. xG 



11 Dorsal aspect of second abdominal segment of pupa. xlOO 



12 Ventral aspect of mouth parts of larva : 1, labium ; md, mandible ; 



mx, maxilla ; p, palpus. x400 



13 Antenna of larva. x250 



14 Latero-ventral aspect of head of larva : a, antenna ; md, mandible ; 



mx, maxilla ; 1, labium 



15 Caudal end of pupa (male). xlOO 



PLATE 27 



1 P r (} 1 a d i u s p u s i 1 1 u s 



2 P r o I? 1 a d i u s c a 1 i g i n o s u s 

 3Procladiuspinguis 



4 P r o c 1 a d i u s s c a p n 1 a r i s 



5 Ablabesmyia carnea var. c. 

 G Ablabesmyia monilis 

 TTanypusstellatus 



8Al3labesmyiavenusta '■. 



9 A b 1 a b e s m y i a dy ar i 



lOAblabesmyiamelanops 



11 Ablabesmyia flavifrons 



12 Ablabesmyia indecisa 



13 Ablabesmyia indecisa ( after Williston ) 



14 Ablabesmyia pallens, var. a. 



15 T a n y p u s c u 1 i c i f o r m i s 



16 Chasmatonotus bimaculatus 



PLATE 28 



1 C h i r o n o m u s b r a c h i a 1 i s 



2 Chironomus scalaenus 



3 Chironomus spilopterus ( after Williston ) 



4 Chironomus taeniapennis 



5 Chironomus caliginosus 

 GChironomus flavicingula 

 TChironomushalteralis 



8 Chironomus fallax 

 9Chironomusriparius 



10 Chironomus b a r b i p e s 



11 Chironomus annularis 



12 Chironomus a 1 b i m a n u s ( male) 



13 Chironomus a 1 b 1 m a n u s ( female) 



14 Chironomus devinctus 



15 Chironomus nigricans 

 IG Chironomus p e d e 1 1 u s 



17 Chironomus a b e r r a n s 



