21G [August, 



NEW GENERA OF AGDISTID.E AND rTEItOPnORIDJi. 

 BY THE RIGHT HON. LORD WALSINGHAM, M A , LL.D., F.R S., &c, 



ThefoUowinfj species tvill sliorth/ he figured witli stniclural drawings 

 in " Xovitates LepidopteroJogicce.^^ 



AGDISTID/E. 



ATOMOPTEEYX, gen. nov. 



Type Atomopteryx Doeri, Wlsm. 



AntenncB as long as the fore-wings ; basal joint slightly enlarged, rounded ; 

 simple at the base, slightly serrate beyond the middle. 



Maxillary palpi obsolete. 



Labial palpi porrect, extending about the length of the head beyond it, roughly 

 clothed, laterally compressed ; first joint dilated, large and tufted beneath ; second 

 joint longer than the first, tufted ; apical joint very minute. 



Haustellum well developed, clothed along the basal portion. 



Fore-wings narrow at the base, becoming wider beyond it, more than three times 

 the width of their base opposite the anal angle ; costa slightly arched beyond the 

 middle, rather pointed at the apex, apical margin convex and very oblique. Neura- 

 Hon agreeing a]3proxiniately with that of Agdistis, but veins 8 and 9, which run to 

 the costal margin above the apex, are from a common stem ; there appear also to be 

 some supplementary veins about the end of the cell which probably assist the 

 folding of the wing iu an attitude of repose. 



Hind-iuings rather triangular, dilated at the abdominal angle, hind-margin 

 slightly concave. Neuration differing from Agdistis in having veins 3 and 4 from 

 a common stem. 



Abdomen slender, fringed at the sides ; the genital segments in the S strongly 

 developed ; uncus short, reaching to scarcely half the length of the long lateral 

 claspers, it is supplemented by a brush of hair-like scales expanding posteriorly to 

 the length of the uncus itself. 



Legs long and slender ; posterior pair with the femora much shorter than the 

 portion of the tibia above the first pair of spurs ; spurs short, inner spur very 

 slightly longer than the outer. 



This geuus is undoubtedly allied to Agdistis, Hb., but approaches 

 Stenoptyelia, 7i., and Scoptonoma, Ti., not only in neuration, but also in 

 the form of the palpi, which are less abrupt and rather more developed 

 than in Agdistis. In the fore-wings there is an elongate triangular 

 fold extending inwards from the apical margin, btit much less trans- 

 parent than in Stenoptycha, this character, as well as the shape of the 

 fore-wings and the structure of the posterior legs, show that Atomop- 

 teryx may fairly be regarded as a connecting link between Stenoptycha 

 and Agdistis. 



Atomopteryx Doeri, sp. nov. 



Antenyia; pale fawn. 



Palpi pale fawn at the sides, streaked longitudinally above and beneath with 

 brown. 



