DIURNAL LEl'IDOPTERA. G5 



cealeri. half its lengtli or more, by the Ic-ng bristles of the middle joint, nearly 

 perpendicular, straight, subulate, or linear, covered with scales; femora and 

 tibiae with long hairs; tibiae of middle legs with a series of short spines; ab- 

 domen densely hairy: anal angle of hind wings produced; male with stigma 

 whicli is not prominent on the under side; at tlie base of antennee a brush of 

 stiff hairs. 



l»AllB»lIirA, F. 



Knob of antenna thick, ovoid, or elongate-ovoid; the tip suddenly bent with 

 a much contracted, pointed little hook, nearly half as long as the knob, and 

 composed of a larger or smaller number of joints; sometimes of the apical joint 

 alone, which then is placed upon the thick end of the knob as a short slender 

 spine {Phylxua); the last joint of palpi conical or nearly linear, hardly project- 

 ing beyond the bristles of the middle joint ; tibiae generally with spines, the 

 strongest and most constant on the middle tibiae, the most feeble on the anterior; 

 in some species all the tibiae are without spines; body stout; abdomen as long 

 as the head and thorax, reaching the anal angle of hind wings, or surp;)ssing; 

 fringes unicolored. The anterior wings of the tyj)ical species triangular, the 

 costal margin long, nearly straight, atiex slightly pointed; the liind margin 

 oblique, very little or not at all convex; the inner margin much shorter than 

 the costal; hind wings more or less produced on the sub-median nervure, at 

 least in the male. 



In Group I, the wings a little broader, the apical angle of fore wings obtuse, 

 the hind margin less oblique and more convex. The two species have the apical 

 hook of antennae a little longer and stronger, esi)ecially at the base, than the 

 typical species; tibiae with spines, but feeble on the fore and hind legs; the 

 male without slignia. There are numerous differences in the shape of the hooks 

 of the antennae and the spines of tibiae. In respect to the hook, Phi/loeus differs 

 most, the antennae being shorter than in any other species, — only half as long 

 as the abdomen; Meten has the apical hook forming a thick bent cone. The 

 tibiae of Vitellius, Conspicua and Metacomet, have no spines at all. The spines 

 of the tibiae of fore legs are often feeble and indistinct and seem to be wanting 

 in Comma, Peckiits and Osyka. Verna has only the middle tibiae spined; Mianna 

 has the hind tibije sjjined, but only on the apical third interiorly, between the 

 two pairs of spurs. 



Note. — As to Pamphila; the differences in the shape of the knob of antenna, 

 the spines of tibiae, the character of the stigma, are very remarkable, but none of 

 them lead to a natural arrangement of the species. This is least the case with 

 the spines and stigma ([)resence or absence of), as appears at once when the 

 species witliout spines on the tibiae (Vitellius, Conspicua, Metacomet), or those 

 without discoidal stigma, are compared, and opposed to all the others. In re- 

 gard to the antennae, Phylceus diOers most, but is otherwise in all characters an 

 entirely typical Patnphila, and in shortness of antennae the otherwise widely 

 different Huron is its nearest neighbor. The spines of the tibiae on the fore 

 legs, and sometimes on the hind legs, are so short and fine, that they are diffi- 

 cult to recognize, and in danger of being pronounced wanting, though they are 



TRANS. AMEU. ENT. SOC. VI. (9) MARCH, 1877. 



