{March & April 1885. BULLETIN BROOKLYN ENTOM. SOC. VOL. VII. 149 
Pamphila has the antennee terminating in a little bent hook beyond 
the club, and the secondaries are somewhat produced at anal angle. The 
O'o lack the costal fold. 
Amblyscirtes is very like the preceding but the secondaries are evenly 
rounded and the primaries usually broader. 
Pyrgus has the antennz somewhat compressed at tip; a distinct 
brush at base, costal fold in Jd distinct, discoidal stripe wanting. The 
species are checkered with white, and easily recognized. 
Thanaos has the antennze spindle shaped, the club arquate, and 
rather acutely terminated. The palpi are very’ densely clothed with 
bristly hair and the primaries are short. 
Systasea is very like the preceding but the palpi are shorter, more 
sparsely clothed, and the antennal club is more slender. 
Pholisora is also like Thanaos, but the brush at base of antennee is 
scaly instead of hairy. 
Achlyodes is peculiar by the irregular angulate wing form, which is 
unique in this family. 
Eudamus contains large species with somewhat pointed primaries; 
lobate, often tailed secondaries and recurved antennal tips. 
Erycides is very like the preceding but has the wing form of 
Pamphila. 
Pyrrhopyga is very like Hudamus but the club of antennze is obtuse, 
not slender, acute. 
Aegiale is perhaps the most distinct genus in this portion of the 
series. ‘The species are large, the body very robust, abdomen exceeding 
the secondaries which are not tailed. The antenne are short, stout, 
straight and truncate at tip. The life history of A. Yuccae has been well 
described by Prof. C. V. Riley and-the relationship of the Hesperidae with 
the Cusiniares discussed. 
In the next paper some Heterocerous families will be discussed. 
(To be continued.) 
rr 
Taeniopteryx fasciata. 
This species claims the right to be one of our earlier insects. I found 
the pupee, to-day; Jan. 21st, crawling on the ice, over a small brook near 
Philadelphia. It is explained by the sun being warm and the day not 
very cold. According to Dr Hagen, Synop. N. A. Neurop, 1861, p. 34, 
Osten Sacken took it in Washington in April. 
ACAD. NAT. SCI. PHILA. JAN. 21. S. Frank AARON. 
