in the Basin of the Amazons. 273 



swelling the costa itself is somewhat thickened, while helow it 

 there is a bladdery semihyaline space, across which the two radials 

 can be seen running, and apparently uniting within the usual 

 cellular space. Hind wing : Costal with two short branches ; sub- 

 costal running very close to it, and having a single branch ; median 

 nervure curved ; the first median branch starting before the middle 

 of the wing ; second about the middle ; just beyond this last point 

 a nervure is thrown back in the direction of a small bladdery 

 space, which appears to correspond with that on the fore wing ; 

 third and fourth median branches short, from a long stallv. 



In shape, coloration, and markings of the wings, as 

 well as in the form of palpi and antennae, the genus 

 Deuterophijsa corresponds well with Adena, Wlk. ; but 

 the neuration is totally distinct. In Aclena the cell of 

 the fore wing reaches to quite two-thirds of its length, 

 and the disco-cellular is well-marked and vertical ; in 

 Dc.uterophysa, on the other hand, the cell is short, barely 

 extending to half the wing, with the disco-cellular in- 

 distinct and oblique, the third subcostal branch and 

 lower radial being stalked. Aclena sericea, Butler, from 

 Japan, corresponds more closely in the matter of neura- 

 tion with Deuterophysa, having, like it, a very short cell, 

 but the third subcostal branch and lower radial are not 

 stalked. At all events, its position will be near Aclena. 



Walker's only species of Aclena (for it is but one 

 species, though he gave it three names, viz., Scapula (?) 

 paronalis, xviii., 797, Scapula hyhreasaUs, xviii., 797, and 

 Aclena xanthialis, xxvii., 198) is from New Zealand, and 

 varies considerably. 



Mr. Butler, Ann. N. H., 1879, pt. ii., p. 451, alters 

 Walker's name Aclena into Deana, to avoid any clashing 

 between it and Haclena; and Mr. Meyrick (Trans. Ent. 

 Soc. Lond., 1884, p. 330) sinks it altogether, and substi- 

 tutes Nesarcha : I must own that I cannot see the 

 necessity for either alteration or substitution. 



77. D enter opliysa castimaculalis, n. s. 



Fore wing dull fawn-coloured, without markings ; a pale yellow 

 spot on the costa just beyond the middle, and below it an oblique 

 pear-shaped white blotch, without scales, but edged with darker ; 

 fringes, as far as can be made out, whitish. Hind wing whitish, 

 with darker hind margin. Head, thorax, and abdomen fawn- 



