MAY KLIK.S AND MlUGliS OF NEW YORK 323 



6 C Ii i r u o ui u s f u 1 v i v e n t r i s 



7 C h i r o n 111 u s f r e q u o n s 



8 Cbirouomus dux 



9 Cliironomus viridicollis 



10 Cliironomus 1 o n g i ui a n u s (after Willistou) 



11 C li i r o n o ru u s p 1 u m o s u s 



12 Chironomus decor us 



13 Chironomus s i m i 1 i s 



14 Chironomus cristatus 



15 Cricotopus trifasciatus 



16 Cricotopus exilis 



17 Cricotopus bicinctus 



18 Cricotopus v a r i p e s 



19 Cricotopus sylvestris 



20 Cricotopus debilis (after Williston) 



PLATE 30 



1 C a m p t o c 1 a d i u s sp. 



2 Camptocladius fumosus 



3 Camptocladius byssinus 



4 Camptocladius minimus 



5 Orthocladius so r dens 



Orthocladius flavus 



7 Orthocladius sordidellus 



8 Orthocladius n i v o r i u u d u s 



9 Orthocladius absurdus 



10 Orthocladius fugax 



11 Orthocladius o b u m b r a t u s 



12 Thalassomyia fusca 

 13Diamesawaltlii 



14 Tanytarsus obedieus 



15 Tanytarsus g m u n d e n s i s 



16 Tanytarsus deflectus 



17 Tanytarsus dives 



18 Tanytarsus fatigans 



19 Tanytarsus f u 1 v e s c e n s 



20 Tanytarsus muticus 

 21Tanytarsusflavcllus 



PLATE 31 



1 Metriocnemus flavifrons 



2 Metriocnemus par 



3 Metriocnemus lundbeckii 



4 Metriocnemus exagitans 



5 ]Mctrlocnemus atratulus 



C h a s m a t o n o t u s b i m a c u 1 a t u s ( head of male) 



7 D 1 a m e s a w a 1 1 1 i i (aiitoiina of female) 



8 Orthocladius absurdus (antenna of female) 



9 A part of an egg string of S p h a o r o m y a s a r g c n t a t u s 

 10 An egg mass of C h i r o n o m u s »{). x2 



