I'AMniii.iiU: riiK (;knis i.kuk.ma. 1765 



but the fore le-is.on these moileriUely Ion;; aiul nearly ei|ual ; himl tibiae with a rnther 

 thick friiise of hairs above, anil a few similar hairs on middle tibiae. Kemora 2, 1, 3; 

 tibiae 2, II, 1 ; tarsi ;!, 2, 1, but In acclus 2, ;), 1; liind tibiae aiul tarsi to^'ethcr but 

 little longer, loii.^er than those of the inldiUe pair together; fore femora two- 

 thirds to three-fourths the length of tlie mUUlle, one-fourth longer than the hind 

 femora; fore tibiae rather more than half as long as the fore femora or the hind 

 tibiae,* and somewhat less than half as long as the middle tlblan. Foliate appendage 

 of fore tibiae very slender, tapering, attached to the middle of the apleal two-thirds 

 of the joint, extending some distance beyond It, Hve or six times as long da broad, 

 arcuate on the apical two-thirds and bluntly pointed at the tip. Otlicr tibiae furnished 

 at tip with a pair of very long and slender, very nne<|U!il spurs, an<l the hind legs also 

 with a secondary exactly similar pair in the middle of the apical four-llflhs of the 

 joint; lateral spines of middle and hind tibiae much as In Oligoria. Tarsal joints 

 1,2,3,4, o, excepting on the fore legs, where the terminal is slightly longer than t!ie 

 preceding one. Fore tarsi from two-thirds to four-llfths as long as the middle, from 

 three-llfths to tliree-fourtlis the length of the hind tarsi, all furni.shed with a triple 

 row of pretty long spines, the apical ones of each joint a little longer; ba.sal joint 

 nearly or quite as long as the rest together (in acclus proportionally longer than In 

 bianua), second joint barely half as long as first. Claws very small, regularly but not 

 strongly arcuate, compressed, tapering. Pad moderately large, tumid. Paronychia 

 bilid, upper lobe compressed laminate, broad, falcate, with rounded tip, slightly 

 curved, reaching to the tip of the claw, not strongly tapering; lower lobe minute, 

 thread-like, less than half as long as the claw. 



Abdoniiual appendages: Upper organ pretty large, broad and depressed, the cen- 

 trum bent so that the main portion of the organ is horizontal ; centrum deeply sul- 

 catc above longitudinally; hook double, the arms widely separated, straight and 

 horizontal, resembling the arms of a tuning fork ; lateral arms separate, as long as the 

 hooks, somewhat similar to and well separated from them. Clasps stout, broad and 

 long, longer than the upper organ, nearly equal, the extremity considerably produced 

 and hooked above. 



This American group is limited to the mainland of eastern North America, 

 between the fifteenth and the forty-second degrees of latitude ; it has rarely 

 been found far fi'om the sea coast. One species is found in Central Amer- 

 ica ; one in the southern and one in the northern states ; tlie two latter have 

 been taken, rather rarely, in southern New England. 



The butterflies are of small size and the males are supplied witli an in- 

 distinct, linear, discal streak on the fore wings. The color is very dark 

 brown, with very slight markings, consisting, on the fore wings, of an 

 extra-mesial curving or bent scries of small white spots, and on the under 

 surface of the hind wings of indistinct, intermingled cloudings of dark and 

 pale blue, sometimes forming vague bands across the middle of the wing. 

 The genus is remarkable for sometimes possessing ocelli in the perfect state 

 — the only instance known among butterflies. One of the New England 

 species possesses them, the other does not. They vary in appearance in the 

 sexes and are found upon the middle of the front, while in the lower Lepi- 

 doptera they invariably occur on the vertex. In this connection it should 

 be noted that this genus falls at the very base of the Hesperidae, and that 

 it is aberrant in several other points, as an examination of the talde on 

 page 1.5.50 will show. 



• Sometimes the hind tibiae arc a little longer than the fore femora. 



