223 NEW YORK STATE MUSEUM = 9% 
KEY TO SPECIES 
Imagos 
a Wings narrow; hind margin straight for a dis- 
tance, and parallel to front margin 
b Wings uniformly colored or transparent 
G@ Wings Clear oo iga so sie scree totsinima) tae stele aise wale angustipennis 
cOWines “yellowiSlinn .WF 2 sine ae oe epee oes sien ers a.m a ta 
bb. Apical-sixth ‘of wings: bidek.«.2\-. 3. 3. 2. apicalis 
aa Wings dilated, with hind margin visibly rounded : 
b Apical third of the hind wings blackish........ aequabilis 
bb Wings uniformly blackish or smoky............ maculata 
Nymphs 
a Basal segment of the antenna one third longer 
than. the head is wider sc. Ge: weeisien tor aequabilis 
aa Basal segment of the antenna hardly longer than 
the Nead 1S oxvidles Perce sm veseven sede se ee eee maculata 
PA AOE TO WAL: ove oie ie eR IO angustipennis, amata, 2 peewee 
Calopteryx angustipennis Selys 
1853 Sylphis angustipennis Selys, Acad. Belg. Bul. 20:9 
1854 Sylphis elegans Hagen, Monogr. Calopterygines, p.23, 9. 
1861 Calopteryx angustipennis Hagen, Synopsis Neur. N. Am. 
p.56 
1875 Calopteryx angustipennis Hagen, Bost. Soe. Nat. Hist 
Proce. 18:20 (full bibliography and notes) 
1889 Calopteryx angustipennis Hagen, Psyche, 5:242 (descrip- | 
tion) 
1900 Calopteryx angustipennis Williamson, Dragon Flies Ind, 
p.253 (deseription 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 Calopteryx amata Hagen, Psyche, 5:242 (original descrip- 
tion) 
1895 Calopteryx amata Calvert, N. Y. Ent. Soc. Jour. 3:42 (listed 
from Keene Valley: descriptive notes) 
To the above record of a single capture of this species at 
Keene Valley, I have only to add the record of another capture 
on the other side of the Adirondacks, at Axton in June 1901, by | 
Mr A. D. MacGillivray. The nymph is unknown. 
