BOLIVIAN BUTTERFLIES. 355 



as on upper surface, except the color is a light tawny and the nervures and 

 nervules are distinctly of a darker shade. The portion of this band which 

 juts outwards towards hind margin is crossed at its centre by a dark tawny 

 band which extends downwards, but indistinctly, across the lower portions 

 The hind margin has a black thread, then a sixteenth-inch border of dark 

 tawny. Within this in apical area are four interspacial dashes of bright tawny 

 suffusing towards the base, and midway between these are three or four silver 

 spots in interspaces downwards from costa. The basal side of these is dashed 

 with black. The outer side of the prominent band is touched with dark brown, 

 broad at centre of wing but linear towards lower angle. The basal portion of the 

 wing below the discoidal space and within the band is black crossed by the dark 

 tawny nervules, and just above the submedian nervure is a silver spot touching 

 discoidal space. 



The colors of under side of lower wing are the same as upper wing. The 

 ground color is bright tawny. Across the centre of wing, running from near 

 the apex to the anal angle, is a band of blackish brown, broad at the centre and 

 tapering towards anal angle. Within this is a line of interspacial silver spots. 

 The hind margin with its border of dark tawny is the same as on forewing. 



The basal and inner marginal area within the blackish brown band is bright 

 tawny. In the discoidal space are three prominent silver spots, one at its centre 

 and one at each end. Above these, on costa, are two silver spots of equal prom- 

 inence. The interspaces at end of discoidal space have dashes of silver. The 

 nervures and nervules are dark tawny. 



Hab. — Bolivia, near Alezuni. 



Described from ten specimens from Alezuni, Bolivia. Absolute 

 identification from representatives of this genus in collections in 

 this country seemed impossible, but it was identified in London as A. 

 saundersii Hew., which I have from Colombia and Bolivia. The 

 yellow band of saundersii, however, is not so prominent and is en- 

 croached upon more by the rich ground color. The underside of 

 saimdersii is quite diflferent, the bright silver of helepecki being re- 

 placed by dead white, and the dark band of lower wing with its 

 silver interspacial spots showing in saundersii as a narrow dark 

 tawny band. While the location of silver or white spots is practi- 

 cally the same on each, the size of these spots differs totally, and the 

 bright tawny on underside of helepecki does not appear on saun- 

 dersii, but is replaced by a dark brownish. There is no variation 

 in the specimens that I have of helepecki, nor any sign of intergrad- 

 ing towards my specimens of saundersii. 



Diedalma broiiza sp. nov. 

 Expanse 2.70 inches. —Head, palpi, eyes and antennse dark bronze-brown. 

 Thorax and abdomen dark bronze-brown above, dark grayish brown beneath. 

 Legs dark grayish brown. 



TRANS. AM. ENT. SOC, XXVII. DEC, 1901. 



