BOLIVIAN BUTTERFLIES. 353 



DESCRIPTION OF MINE NEW BOLIVIAN 

 BUTTERFLIES. 



BY A. G. WEEKS, JR. 



Adelpha deborah sp. nov. 



Expanse 2 inches. — Head, tboi-ax, palpi, abdomen and legs rieh brown above; 

 white beneath. Antennte black, tipped with brown. 



General ground color of upper surface dark brown, as in nearly all species of 

 this group. 



The forewing is crossed by a very prominent band of tawny color running from 

 centre of costa downwards, touching end of discoidal space, and striking inner 

 margin one-third distance from lower angle to base. The portion opposite the 

 lower end of discoidal space extends outwards towards hind margin. The veins 

 crossing the bands are distinctly marked, being dark brown. One-sixteenth inch 

 within hind margin is an irregular black line following contour of the margin, 

 and within this is a suffused baud of a color slightly lighter than ground color, 

 somewhat indistinct. The space between this and the tawny band, .including 

 the apical area, is of the ground color. The basal area within the tawny band 

 is of the ground color, crossed by black lines as follows: in discoidal space a 

 line starts from median nervure, very near the base, and runs upwards, striking 

 the subcostal nervure, and then turns abruptly downwards across centre of dis- 

 coidal space; below, in next interspace, this line forms two small circles, one 

 above the other. Across outer portion of discoidal space run two parallel black 

 lines. 



The lower wing is crossed by three parallel bands, somewhat lighter than ground 

 color, starting at costa near apex and joining at anal angle. Within hind mar- 

 gin, midway to the first of these bands, is an indistinct line of the same color 

 following the dentations of the margin. There is a fourth and broader band 

 within the three mentioned, running from centre of costa, terminating also at 

 anal angle, but it is very indistinct. The basal portion of wing is of ground 

 color, excepting a very indistinct band of darkish across the discoidal space- 

 Just above the anal angle, one may say at the anal angle, is a tawny spot. 



The under surface is generally blackish, marked with white and tawny. 



On underside of forewing, the first half of costa from base upwards, is tawny. 

 From the base, in discoidal space, is a dash of white extending along the sub- 

 costal nervure ; outside of this the discoidal space is crossed by a white triangle, 

 surrounded by a black line ; the balance of discoidal space is dark tawny crossed 

 by a very prominent spot or band of silvery white with a black border. There 

 is a very small white dot also at lower outer end of the space, surrounded by 

 black. The tawny band of the upper surface is white, but is encroached upon, 

 and so lessened in extent, by the sufl^usion of the blackish ground color. Within 

 the hind margin appear the line and band noted on upper surface, but at the 

 apex and lower angle, for the first three interspaces, these are white. The basal 



TKANS. AM. ENT. SOC, XXVII. (45) DEC, 1901. 



