142 



NOVITATES ZOOLOGICAE XXIII. 1916. 



steamer on the Amazon betweeu Manacapurei and Teffe at the end of April 1906 

 (S. M. Klages). This and the type are the only examples I have seen of the 

 Amazonian race. In the type-specimen the lobe of the valve (V) is almost as deep 

 brown as the harpe. 



Fi£ ■ 29 



Fls ■>() 



Text-fig. 29. — Syche.na subtilis megalobvs, ventral view of clasper. 

 „ „ 30. — ,, „ subtilis, „ „ „ 



6. Sychesia dimidiata spec. nov. (text-figs. 31-33, 45) 



Similar to dryas in colour, but the tips of the coxae pare buff-yellow, the 

 yellow area of the hindwing more sharply defined and extending from the base to 

 the lower angle of the cell or only to the point of origin of the upper median branch 

 (type), the area agreeing in size more or less with that of the female of S. dryas, 

 except in being deeper yellow. 



The ninth tergite of the male bears a very long upper process, P 1 (text-fig. 31) 

 and a short, forked, lower process, the two prongs of which are homologous to P 2 

 and P 3 of S. subtilis. Text-fig. 33 represents these organs in a lateral aspect. The 

 valve (V) is long and slender, and the harpe (IT) very much smaller than in the 

 previous species, ending in a short lobe (L 1 ), which bears a tooth on the inner side 

 representing a second lobe (L 3 ). Only the apical lobe of the harpe is plainly 

 visible, if the long scaling situated at the edge of the eighth segment is removed, 

 L 1 lying inside this segment. The tenth tergite (x. t.) is longer and less curved 

 than in the previous species ; the setiferous apical portion bears a dorsal median 

 groove. The jjenis-funuel is cylindrical, not flagon-shaped. 



We have three males from Muzo, Rio Cantinero, Colombia, 400 m. (A. H. 

 Fassl). 



Two females from Quevedo, West Ecuador, in the Tring Museum possibly 

 belong to this species. The terminal band of the hindwing is somewhat broader 

 than in the male. The edge of the eighth abdominal sternite is thinner in the 

 centre than laterally ; the lateral angle bears a tooth (text-fig. 45). 



