Genus Systasea 
Early Stages. —Unknown. 
The habitat of this species is southern Colorado, New Mexico, 
and Arizona. 
(7) Hesperia nessus, Edwards, Plate XLV 1 I, Fig. 17, $ 
(Nessus). 
Butterfly .—This singularly marked little species, which prob¬ 
ably might be separated from this genus on account of the slen¬ 
der and prolonged palpi, and no doubt would be by some of the 
hair-splitting makers of genera, I am content to leave where it 
has been placed by recent writers. It can be readily recognized 
by the figure in the plate, as there is nothing else like it in our 
fauna. Expanse, .80 inch. 
Early Stages. —Unknown. 
Nessus occurs in Texas and Arizona. 
There are a few other species of this genus found within the 
limits of the United States, but enough have been represented 
to give a clear conception of the characteristics of the group, 
which is widely distributed throughout the world. 
Genus SYSTASEA, Butler 
Butterfly .—The palpi are porrect, the third joint projecting 
forward, the second joint densely scaled below. The antennae 
are slender, the club moderately stout, somewhat bluntly pointed, 
bent, not hooked. The hind wings are somewhat 
crenulate, and deeply excised opposite the end of the 
cell. The fifth vein is lacking. In the fore wing the 
lower radial arises from a point nearer the upper 
radial than the third median nervule. The fore wings 
are crossed about the middle by translucent spots or 
bands. 
Early Stages .—The early stages are unknown. 
(1) Systasea zampa, Edwards, Plate XLVI, xt Fig -. 1 5 8 -~ 
Fig. 1, £ (Zampa). the genus 5/5- 
Butterfly .—The wings on the upper side are ochre- tasea - 
ous, mottled and clouded with dark brown. The primaries are 
marked about the middle and before the apex by translucent 
transverse linear spots. In addition there are a number of pale 
opaque spots on the primaries. The secondaries are traversed by 
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