NOVITATES ZOOLOGICAE XXIII. 1916. 139 



the abdomen also shaded with scarlet, in the male to a greater and in the female to 

 a lesser extent, the abdominal area of the hindwing, especially in the male, with 

 a distinct red tint. 



Larger than S. dryas, the fuscous border of the hindwing as broad as in that 

 species, but the fringe from the anal angle to the lower median vein yellow. There 

 is another red-tinted species in Brazil, described below, which has a much narrower 

 terminal band in the male than erubescens. 



The central prominence of the eighth tergite of the male is much smaller than 

 in S. dryas. The large process P 1 (text-fig. 24) of the ninth tergite is more 

 compressed distally than in S. dryas, and the two lobes into which it is divided 

 (fishtail) are different, the lower being shorter than in S. dryas, and the upper one 

 rather longer. The setiferous, slender lobe P 2 projects from the underside of P 1 . 

 The side-clasper is very different from that of S. dryas. The valve-portion (text- 

 fig. 24, V, lateral aspect) is well developed instead of being reduced to a small 

 tubercle, and the harpe (H) is quite simple, being curved inward apically. 



The eighth sternite of the female is thicker in the centre than in S. dryas, and 

 bears at the lateral angle a very prominent tooth (text-fig. 43). 



We have one pair from Santa Catharina. 



5. Sychesia subtilis Butl. (1878) (text-figs. 25-30, 44) 



On an average smaller than the preceding species in both sexes ; the colouring 

 is the same as in dryas, except that the fuscous costal and distal marginal borders 

 of the hindwing, in the male, are narrower and more diffuse both above and below. 



In most specimens the upper angle of the cell of the hindwing projects rather 

 less than in S. dryas. The pectinations of the male antenna are distinctly longer 

 than in specimens of dryas of the same size, and the distance between the scape 

 and the first pair of pectinations is shorter than in most S. dryas. 



The genitalia of the male are different. The eighth tergite projects much less 

 than in the S. dryas, and is less incrassate (text-fig. 25, viii. t.). The ninth tergite 

 has three processes on each side, not two, as in S. dryas (text-fig. 27, P 1 , P 2 , P 3 ; 

 dorsal view, corresponding to text-fig. 13). The upper process (P 1 ) is the largest ; 

 it is apically widened, but very mnch less so than in S. dryas. P 3 is longer than 

 in S. dryas. P 3 arises from the underside of P 1 about its centre, and is straight and 

 pointed. 



The feebly chitinised valve (V) is much larger than in S. dryas, but still 

 appears as a weak appendage of the harpe, and bears rough scaling. The harpe is 

 large and strongly chitinised (H), the portion most easily seen being a deeply 

 coloured glossy apical lobe which is directed upward. Below this lobe (L 1 ) the 

 inner margin is sinuate, a second, small lobe (L 2 ) being formed. The tenth tergite 

 almost agrees with that of 8. dryas, except that the apex is rather broader and 

 mesally more or less impressed longitudinally. 



In the female the eighth sternite has not a smooth edge laterally, bat is here 

 conspicuously folded and notched, and bears a large pointed tooth at the angle 

 (text-fig. 44). 



