MAY PLIES AND MIDGES OF NEW YORK 327 



PLATE 31 



1 Metriocuemus flavifrons 



2 Metriocnemus par 



3 INIetriocnemus lundbeckii 



4 M e t r i o c u e 111 n s e x a g i t a n s 



5 Metriocnemus atratulus 



6 C h a s m a t no tu s bimaculatus (bead of male) 



7 D i a in e s a w a 1 1 li i (antenna of female) 



8 O r t b o c 1 a d i u s a b s u r d u s (antenna of female) 



9 A part of an egg string of Spbaeromyas argentatus 



10 An egg mass of C b i r o u o m u s sp. x2 



11 An egg mass of T any pus sp. (after Miall) 



12 A part of an egg string of C b i r o n o m u s sp. 



13-14 A part of tbe egg string of Cbironomus dor sal is (after 

 Miall and Hammond) 



15 A part of an egg string of Cbironomus sp. 



16 Dorsal aspect of tborax of a male Cbasmatonotus bimacula- 



tus. x40 



PLATE 32 



Genitalia : d, dorsal keel ; 1, lateral ; s, superior ; i, inferior lobe 



1 Bezzia setulosa. Dorsal aspect. Male. xlOO 



2 T a n y p u s c u 1 i c i f o r ni i s . Male. xlOO 



3 A b 1 a b e s m y i a m o n i 1 i s . Male. xlOO 



4 Coryuoneura celeripes ( after Kieff er ) 



5 Diamesa praeeox (after Kieff er) 



G Cbasmatonotus bimaculatus. Dorsal aspect. Male. x50 



7 Cbironomus f 1 a v i c i n g u 1 a. Dorsal aspect. Male. xlOO 



8 Cbironomus modestus. Dorsal aspect. Male. xl(JO 



9 Cbironomus modestus var. b. Latero-ventral aspect. Male. 



XlOO 



10 C b i r o n m u s f u 1 v i v e n t r i s . ^lale. xlOO 



11 Cbironomus modestus. Female. xlOO 



12 Cbironomus flavus. Ventral aspect. Male. xlOO 



13 Cbironomus d e c o r u s . Dorsal aspect. Male. xlOO 



14 Diamesa waltlii. Dorsal aspect. Male. xoO 



PLATE 33 

 Genitalia: d. dorsal keel; 1, lateral lobe; s, superior lobe; i, inferior 

 lobe ; a, appendage of tbe superior lobe 



1 O r t b o c 1 a d i u s k e r v i 1 1 i ( after Kieff er ) 



2 C r i c t o p u s e X i 1 i s . Male. xlOO 



3 T a n y t a r s u s d i s s i m i 1 i s . Ventral aspect. Male. xloO 



4 Tanytarsus exiguus. Ventral aspect. Male. x350 



4a T a n y t a r s u s exiguus. Male. Latero-ventral aspect. xlOO 



5 Tanytarsus dives. Male. Dorsal aspect. xlOO 



6 Metriocnemus par. Male. Lateral aspect. xlOO 



7 Ortbocladius absurdus. Lateral aspect. Female. xlOO 



8 Metriocnemus atratulus (after Kieffer) 



