174 NOVITATBS ZOOLOOICAE XXIII. 1916. 



with costal margin to one-half or beyond yellow (in claudicula only its extreme 

 base) abdomen more narrowly yellow laterally, paler ventrally. 



S. Brazil, type (no doubt from Porto Alegre ; received through Staudinger) in 

 coll. L. B. Prout. " Peru," 3 8 <3 in coll. Brit. Mus. 



Perhaps a form of attenuata Warr. (Nov. Zool. vii. 125), but the antennal 

 pectinations appear slightly shorter and stouter, the size is somewhat larger, the 

 yellow patches of forewing rather more ample, the black streak along M and M l of 

 hindwing of more uniform width throughout, and there is a narrow black streak 

 (line) along the fold, which is wanting in Warren's species. 



This species (or form) has passed as dichroa Perty, but Perty's careful 

 description and figure {Del. Anim. 161, t. 32, f. 8) are decisive against this ; if his 

 species is not (as I firmly believe it to be) a mere slight aberration of claudicula, 

 it is a Cyllopoda unknown to me ; the elongate third joint of S palpus fixes the 

 genus. 



53. Atyria albifrons sp. nov. 



S . Closely like postica Walk. (List Lep. Ins. ii. 371), but with shorter antennal 

 pectinations (scarcely over twice diameter of shaft, in postica four times), face white, 

 tegula black. On the forewing the yellow posterior blotch is bounded by the 

 median vein about to the middle of the wing, its edge then curves rather steeply 

 and finally falls vertically on the hindmargin 3 or 4 mm. from toruus. Distal 

 border of hindwing about 2-2-5 mm. wide, of almost uniform breadth throughout, 

 varying very little in the four specimens ; an exceedingly fine black inner-marginal 

 edge to this wing. 



Peru, 4 in coll. Brit. Mus., presented by W. Schaus (apparently as postica). 



54. Atyria innemosyne sp. nov. 



<$, 38 mm. Face, vertex, palpus and antenna black ; the palpus rather short ; 

 the antenna with somewhat projecting joints, each bearing two pairs of fascicles 

 of long cilia ; postorbital rim whitish grey. Thorax above black, with a yellow 

 spot on tegula ; beneath whitish grey. Abdomen above, on sides and at anus 

 black ; beneath whitish. 



Forewing with areole single, or exceptionally double with the distal extremely 

 minute ; bright, full yellow with black borders, the costal about 1*5 mm. in width, 

 with a triangular projection at the areole and DC, ending in a point between the 

 bases of R 3 and M 1 , the distal broadest (nearly 5 mm.) at apex, rounded-edged 

 proximally, 2 mm. at M 1 , again widening slightly at tornus, the hindmarginal 



1 mm. broad. Hindwing with SC 2 shortly stalked to almost connate, DC 



sinuous ; concolorous with forewing, the black border not projecting at disco- 

 ■cellulars, not widened at apex, extremely narrow at abdominal margin, proximally 

 almost confined to the fringe. 



Underside the same. 



Peru : Huancabamba, type in coll. L. B. Prout ; Upper Rio Toro, La Merced, 

 Chanchamayo, in coll. L. B. Prout; Sau Remon, 3000 ft., June— August 1903 

 (Watkins and Tomlinson), in coll. Brit. Mus. 



Superficially very like ops Druce (Proc. Zool. Soc. Lond. 1885, p. 529), which 

 has rather less short palpus, c? antenna pectinate (though very shortly), areole 

 double, SC 2 of hindwing stalked, DC normal, a dorsal yellow stripe down the 

 abdomen, a black dash on forewing projecting from the distal border along M 2 . 



