316 NEW YORK STATE MUSEUM 



EXPLANATIONS TO THE PLATES 



PLATE 1 



The bull-frog, K a u a c a t e s b i a n a Shaw. Photo by Dr. J. L. Hancock 



PLATE 2 

 Hemerobian wings 



1 Wings of H e m e r o b i u s t u t a t r i x Fitch. 



2 Wings of Spadobius Occident a lis Fitcb. 



PLATE 3 

 Hemerobian wings 



1 Wings Of M i c 1- o m u s insipidus I lagen. 



2 Wings of J\I i c r m u s j o n a s sp. nov. 



3 Wings of P a 1 m o b i u s a m i c u 1 u s Fitcb. 



PLATE 4 

 Mayflies 



1 Wings of subimago of Baetisca obesa Say. sbowing color 



pattern : 1, 2, 3, anal veins. 



2 Lateral view of nymph of Baetisca obesa Say 



3 Wings of imago of E c d y u r u s m a c u 1 i p e n n i s Walsh 



4 Wings of imago of H e p t a g e n i a i n t e r p n n c t a t a Say 



PLATE 5 

 Chirotenetes 



1 Female imago of Chirotenetes a 1 b o ui a n i c a t u s sp. nov. 



2 Wings of subimago of same 



3 Lateral view of nymph of same 



4 Dorsal view of nymph of same 



PLATE 6 

 Chirotenetes 



1 End of male abdomen of Chirotenetes a 1 b o m a n i c a t u s sp.* 



nov. viewed from below ; f, forceps ; m, rudimentary median caudal 

 seta 



2 Labrum of nymph of same species 



3 Labium of nymph of same 



4 Mandible of nymph of same 



5 Maxilla of nymph of same, with suboval gill tuft attached 



6 Base of antenna of nymph of same 



7 Fore leg of same, with coxal gill tuft attached 



8 Hind leg of same 



9 Claw of hind tarsus of same 



10 Gill lamella of the fourth abdominal segment with gill tuft attached to 

 its base on the under side 



PLATE 7 

 Mayfly nymphs (photographed from alcoholic specimens) 



1 Nymph of A m e 1 e t u s 1 u d e n s sp. nov. 



2 Nymph of Choroterpes basalis Banks 



3 Nymph of Ecdyurus maculipennis Walsh 



♦White fore torsi accidentally out away in cutting out the back-ground. 



