( 429 ) 



Underside creamy huff. Forewing rosy from cell to hir.dmari.nn ; discal line 



as above, becoming rosy behind. Hindwing with incurved costal margin as 



in 0. crocata Boisd. (1872), pelota Schaus (1906), invalid n Schaus (1900), and 

 others ; a broad fuscous line from near apex to centre ; the wing palest 

 behind. 



Length of forewing : 32 mm. 



Hab. Rio Pilcomayo to Rio Grande, North Argentina, December 1903 

 (J. Steiubach). 



1 ?. 



40. Adelocephala hypoxantha spec. nov. 



J. Collar, upperside of abdomen, and sides of breast ochraceous ; npperside of 

 thorax, legs, underside of abdomen, and both sides of wings fawn-colour. 



Wings, above, minutely speckled with drab. Forewing narrow, the hind- 

 margin comparatively long ; a faint trace of an antemedian line and a more distinct 



broadish discal line hair-brown ; a rather large discoeellnlar spot blackish. 



Hindwing elongate-ovate, the distal margin strongly and almost evenly rounded ; 

 basal area washed with ochraceous ; a diffuse discoeellnlar spot fuscous. 



Undermle. similar to upper, both wings shaded with ochraceous at base below 

 cell ; discal line of forewing still less distinct than above and the cell more or 

 less fuscous. 



Length of forewing : 27 — 30 mm. 



Hab. Tncuman (J. Steinbach). 



A series. 



47. Adelocephala affinis spec. nov. 



$1. Almost exactly like the Brazilian A. cinerea Schans (1900); the pale 

 distal marginal area of both wings broader and the genitalia very different, the anal 

 tergite of the S terminating in a short sharp hook, being somewhat dilated proxi- 

 mally to this hook and bearing two small tubercles or vestiges of tubercles on this 

 widened portion. The clasper bears a dorsal process which is slender, very feebly 

 chitinised, and lies above the anal tergite ; between the clasper and the anal sternite 

 there is a lanceolate or triangular, flat, black process ; the clasper of the right side 

 has a long slender basal ventral process which projects auad, being somewhat 

 twisted ; this process represented by a small tooth on the left-side clasper. 



Hab. Venezuela, the Guianas, Upper Amazons, and Pern. 



Perhaps a representative of A. cinerea, bnt the genitalia are so different that 

 we think it wiser to treat the insects as being specifically different till we are 

 acquainted with an intermediate form. 



47«. Adelocephala affinis affinis. 



S. Collar more ochraceous than in A. cinerea ; hindwing more rounded. Anal 

 tergite without distinct tubercles on upperside, the widened portion being merely 

 impressed mesially. Upper process of clasper very thin, almost thread-like ; the 

 black inner process elongate-triangular, produced into a rather long point, the 

 ventral edge serrate. 



?. Pale marginal area of both wings half as wide again as in A, cinerea. 



Hab. Merida, Venezuela. 



Several ejej, 1 ?. 



