AMPIIORACERAS. CTENUSA. 



377 



the basal half black-browu, the terminal half orange-yellow. Under- 

 side orange-jcllow with the terminal area of fore wing and the hind 

 wing irrorated with fuscous. 



Fig. 78. — Amplioraceras rothachikli, (^ . \. 



Hah. Ee. I^. Guinea, Dinawa, 4000 ft. (Pratt), type f in Coll. 

 Bethune Baker. E.vjp. 80 millim. 



Genus CTENUSA. 



Type. 



Ctenusa, Hmpsn. P. Z. S. 1910, p. 422 carnicolor. 



Proboscis fully developed; palpi upturned, the 2nd joint reaching to vertex 

 of bead and moderately fringed with hair in fi-ont, the 3rd moderate, oblique; 

 trons smooth ; eyes large, round ; aritennEe of male bipectinate with moderate 

 branches, the apex simple ; tliO)-ax clothed vi'ith hair only and without crests; 

 tibiae moderately fringed with hair, the mid and hind tibiae strongly spined ; 

 abdomen without crests. Fore wing broad, the apex rectangular, the termen 

 evenly curved, crenulate ; veins Sand 6 from near angle of cell ; 6 from upper 

 angle; 9 from 10 anastomosing with 8 to form the areole ; 11 from cell. 

 Hind wing with the termen produced to a slight lobe at vein 4; the cell 

 nearly half the length of wing; veins 3, 4 from angle; 5 from just above 

 angle ; 6, 7 from upper angle ; 8 anastomosing with the cell near base only. 



