138 



>!OVITATBS ZOOLOGICAE XXIIT. 1916. 



3. Sychesia naias spec. nov. (text-figs. 20-23, 42) 



If the preceding species, S. hora, is the Colombian representative, then S. naias 

 must be regarded as replacing it in Central America. Colouring as in S. hora ; in 

 one of the females a distinct yellow spot in front of the base of vein M 1 ( = vein 3) 

 on the hindwing. 



The male organs differ as follows : The large process (P 1 ) of the ninth tergite 

 (text-fig. 20) is apically divided into two lobes, of which the lower one (text-fig. 22) 

 is directed downward, and is curved so much sideways that in a dorsal view (text- 

 fig. 20), its apex projects from under the dorsal lobe. In an anal aspect (text-fig. 

 23) this ventral lobe somewhat resembles a stocking in shape. The setiierous 

 process (P 3 ) is thicker than in hora. The valve-portion of the side-clasper has 

 entirely disappeared; the harpe (H) ends in two lobes ; the outer lobe (L 1 ) is broad, 

 rounded, and smooth (text-figs. 20, 21), and the inner lobe (L 2 ) narrow, curved, 

 deeper brown, and bears bristles (as does the corresponding lobe in the other species 

 of Sychesia). The apex of the tenth tergite (x. t.) is rather narrower than in the 

 previous species. 



In the female the eighth sternite has at each side two teeth (text-fig. 42), one 

 being placed at the lateral angle, and the other, which is sometimes small or obtuse, 

 further inward. 



We have : one male from Guapiles, Costa Rica, June (W. Schaus), type ; three 

 females from Costa Rica (Ch. Underwood) ; and one female from Rio Wanks, 

 Nicaragua, September 1905 (M. G. Palmer). 



4. Sychesia erubescens spec, nov. (text-figs. 24, 43) 



Besides S. dryas tupus there occurs in Sauta Catharina a species closely allied 

 to it, but different in colour and structure. This erubescens stands about in the 

 same relation to S. dryas in the South as naias and hora in the North. 



Text-pig. 21. — Sychesia erubescens, lateral view. 



A small tuft of scales behind the antenna, the collar, sides of the breast, apices 

 of the coxae, inside of the forecoxa, and the larger portion of the trochanters scarlet, 



