222 NEW YORK STATE MUSEUM 



KEY TO SPECIES i 



Imagos 



a Wings narrow; hind margin straight for a dis- 

 tance, and parallel to front margin 

 I) Wings nniformly colored or transparent 



c Wings clear a n g u s t i p e n n i s 



cc Wings yellowish a ni a t a 



ib Apical sixth of wings black a p i c a 1 i s 



«fl' Wings dilated, with hind margin visibly rounded 



b Apical third of the hind Avings blackish a e q u a b i 1 i s 



bb Wings uniformly blackish or smoky m a c n 1 a t a 



Ni/mphs 



a Basal segment of the antenna one tliird longer 



than the head is wide a e q u a b i 1 i s 



aa Basal segment of the antenna liardly longer tlian 



the head is wide m a c u 1 a t a 



««« Unknown a n g n s t i p e n u i s . a m a t a , a p i c a 1 i s 



Calopteryx angustipennis Sel.ys 



1853 S y 1 p h i s a n g u s t i p e n n i s Selys, Acad. Belg. Bnl. 20:9 



1854 S y 1 p h i s e 1 e g a n s Hagen, Monogr. Calopterygines, p.23, 5 . 

 1861 Calopteryx a u g u s t i p e n n i s Hagen, Synopsis Neur. N. Am. 



p.5G 



1875 Calopteryx an g u s t i p e n n i s Hagen, Bost. Soc. Nat. Hist. 

 Proe. 18:20 (full bibliography and notes) 



1889 Calopteryx augustipennis Hagen, Psyche, 5:242 (descrip- 

 tion) 



1900 Calopteryx a n g u s t i p e n n i s Williamson, Dragon Flies Ind, 

 p.253 (description and account of habits) 



This elegant, clear winged species has not been found as yet 

 within the State, but Mr Williamson has found it locally abun- 

 dant in western Pennsylvania. Its nymph is unknown. 



Calopteryx amata Hagen 



1889 C a 1 op t e r y X n m a t a llageu. Psyche, 5:242 (original descrip- 

 tion) 



1895 Calopteryx a mata Calvert, N. Y. Eat. Soc. Jour. 3:42 (listed 

 from Keene Valley: descriptive notes) 



To the above record of a single capture of tliis species at 

 Keene Valley, I liave only to add the lecord of another capture 

 on the other side of trie Adirondacks, at Axlon in June 1001, by 

 Mr A. D. ]MacGilIivray. The nymph is unknown. 



