1870.] 273 [Scudder. 



The most prominent points of distinction between the two species 

 are to be found in the general tint of the upper and under surfaces 

 of the wings, in the presence or absence of orange spots near the 

 anal angle of the upper surface of the secondaries, and in the nature 

 of the extra-mesial band upon the under surface. 



In one the general color of the upper surface of the wings is a very 

 dark glossy brown; in the other dark greyish slate brown. The tint 

 of the under surface of the first is dark slate brown ; of the second 

 ashy slate brown. The orange spots near the anal angle of the sec- 

 ondaries of the first are frequently present in the 9 (in about one 

 half of my specimens) , almost never in the $ (about one in seven- 

 teen specimens) ; in the second they are almost always present in the 

 2 (in about six out of seven), usually in the $ (about twice out of 

 three times) ; these figures apply, in both cases, to those specimens 

 which have any trace whatever of the spots; when they are distinct 

 in the lower median interspace of the second species, there is almost 

 invariably a pretty distinct, similarly colored spot in the next lower 

 interspace, which is seldom the case in the first species. But it is in 

 the character of the extra mesial band of the under surface that we 

 find the most striking differences between the two species; in the 

 first, the band consists of a series of quadrate spots slightly darker 

 than the tint of the wing, bordered externally with pale bluish scales, 

 and frequently (?) or almost never ( <5 ) bordered very faintly on the 

 inner side; in the primaries the spots composing the band are usually 

 confluent throughout the whole of their breadth; in the upper half 

 of the secondaries they are generally placed successively a little far- 

 ther toward the outer border ^ and are connected by but about one 

 half their breadth ; yet even here there is no white edging above or 

 beneath; in the second species the spots composing the band are 

 usually blackish brown in color, roundish oval and transverse, but 

 sometimes— especially on the lower half of the primaries — quadrate 

 or reniform in shape ; they are independent, though closely contigu- 

 ous, and in rare cases, partially confluent, and are completely encir- 

 cled with whitish scales, although much more distinctly on the outer 

 side than elsewhere. 



There are also other differences of less importance; such as the 

 presence, in the second species, of a broad and long, curving patch 

 of orange on the under surface of the secondaries, next the inner 

 margin and just above the anal angle; when this is at all perceptible 

 in the first species, it is indicated only as a slender streak, often much 



PROCEEDIKGS B. B. N. H.— VOL. XIII. 18 AUGUST, 1870. 



