NOVITATES ZOOI.OGICAE XXIII. 1916. 135 



b. S. dryas tupus subsp. nov. (text-fig. 15) 



Harpe of c? with two apical processes, the upper one rounded and curved 

 inward. The eighth sternite of the ¥ as in S. d. dryas. 

 Santa Catharina ; one pair in the Tring Museum. 



Halesidota basipennis Walk. (1856), from Para, was based on a single female, 

 now in the Oxford Museum. Dr. H. Eltringham, who has very kindly examined 

 it for me, informs me that the edge of the eighth sternite is quite smooth. This 

 would prove that the specimen belongs to dryas, and not to subtilis as I suspected 

 from the locality. The females of S. dryas tupus and S. dryas dryas not being- 

 different, it is, of course, not possible to decide whether basipennis, from Para, is 

 the same as subsp. tupus or as subsp. dryas, or whether it represents a special sub- 

 species from the Lower Amazon. To settle this point we must wait for the arrival 

 of males. The Rev. A. Miles Moss having been stationed at Para now for several 

 years, this keen and successful lepidopterist will no doubt obtain a series of S. dryas 

 in that most interesting district. 



2. Sychesia hora spec. nov. (text-figs. 16-19) 



The abdomen and hindwiug perhaps a little deeper yellow than in S. dryas, 

 otherwise the colouring the same as in certain specimens of that species. The 

 black-brown border of the hindwing rather sharply defined in both sexes, in the 

 male (we have only one specimen of this sex) not reaching the apex of the cell, and 

 in the female (of which sex we have two specimens) extending to the point of origin 

 of the upper median branch (vein 3). 



The median projection of the eighth tergite of the male resembles that of the 

 preceding species, but is shorter and vertically thinner. The process P 1 of the ninth 

 tergite (text-fig. 16) is large, compressed and apically divided into two large prongs, 

 of which the lower one is curved and bears a large tooth on the upperside, as shown 

 in the lateral view represented by text-fig. 18. From the base of this process P 1 , 

 on the underside, projects the pale, slender, setiferous process P 2 , not visible in a 

 dorsal view of the organs. The side-claspers are strongly developed, and very 

 different from those of S. dryas, although built on the same plan. The thin apical 

 lobe of the valve (text-fig. 17, V, ventral aspect) is reduced to a small tubercle, 

 densely covered with scales. The harpe (H) consists of a more deeply chitinised 

 inner portion ending in a very broad lobe, L 2 , and bearing proximally to the middle 

 a tooth, and a pale, glossy and smooth outer portion also ending in a broad lobe, L 1 . 

 The harpe is much broader centrally than it appears to be from our text-figs. 16 and 

 17, which represent it in a dorsal and ventral aspect; the lateral aspect is given in 

 text-fig. 19. The tenth tergite (x. t.) is similar to that of S. dryas; the apex 

 is grooved above. In spite of all the differences, the similarity between the organs 

 of S. dryas and hora can easily be perceived. 



One male from Cananche, Cundinamarca, Colombia, September 1903 (M. de 

 Mathan) ; aud two females from Popayan, Cauca Valley. 



I do not find any structural difference between these females and dryas, and I 

 only place them with hora on account of the locality. Perhaps they are dryas ; but 

 as hora is undoubtedly closely allied to dryas, the absence of a structural difference 

 in the eighth segment is not surprising. 



