( 432 ) 



the clasper broader, the long ribbon-like process of the clasper much widened 

 beyond the middle, the thorn-like apical portion being long; the long hair-scales 

 of clasper concolorons with the abdomen, not being ochraceons as in the Peruvian 

 form of A. antkonilis. 



Length of forewing : 38 mm. 



Hab. S. Domingo, Carabaya, South-Hast Pern, 6 » ft. Mi. If. Ockenden). 



4 <?<?. 



53. Adelocephala tibialis spec. nov. 



c?. Fore- and midtibiae ending in a naked process. Antenna with 27 pectinated 

 and 11 simple segments. Collar, base of abdomen and underside of body pinkish ; 

 upperside of thorax wax-yellow, patagia edged with pink, abdomen clayish, the 

 bases of the segments creamy, anterior coxa rose-pink. 



Wings, upperside : forewing chrome-yellow, a discal line running from tip 

 of wing to three-fifths of hindmargin, diffuse on outer side, and the distal and 

 hindmargins pink ; a small white stigma situated in a pink ring. — Hindwing 

 pink. 



Underside like body, creamy white, flushed with pink; the discal line of 

 forewing just visible ; costal edge of hindwing rounded at base, then slightly 

 incurved. 



Length of forewing : 19 mm. 



Hab. Estanzia Cooper, Alto Paragnay (Th. Inslay). 



1 <J. 



Resembling A pamala Schaus (1900) in colour, but easily recognised by the 



armed tibiae. 



54. Anisota oslari spec. nov. 



9. Head, front, part of thorax, breast and upperside of abdomen ochraceons ; 

 mesonotum, underside of abdomen except the edges of the segments, and the 

 legs clayish buff. 



Wings, above : forewing clayish buff, basal area and a discal line very faintly 

 grey; stigma white, rounded; no fuscous irroration ; distal margin more straight 

 and hind angle less rounded than in A. stigma F. (1775) Hindwing clay- 

 colour, washed with reddish, especially in costal half; no line on disc; costal 

 edge distinctly longer than abdominal edge. 



Underside clay-colour, washed with reddish, especially in proximal half of 

 forewing and costal half of hindwing ; no markings. 



Length of forewing : 35 mm. 



Hab. Nogales, Arizona, July 1903 (E. J. Oslar). 



2 ? ?. 



Mr. Oslar says he " obtained these two specimens from chrysalids dug from 

 the roots of the century or mescal plant." Nearest to assimilis Druce (1S80), 

 of which only the S is known. 



