208 



H. STEMPFFER 



C. cretosus. Male genitalia (Text-fig. 179) : resembling those of calice but the valves are not 

 so large, the upper process, which is folded under the lower one, ending in a long sharp point 

 clothed with strong spines, the lower process, also connected to the vinculum by a membrane, 

 armed with a tooth in the middle of its lower edge. 



C. kaffana. Male genitalia (Text-fig. 180) : closely resembling those of cretosus except that 

 the terminal point of the upper process of the valves is shorter and more robust, and the apex of 

 the lower process differs slightly in shape. 



C. melaena. Male genitalia (Text-fig. 181) : uncus composed of two rounded lobes fused on 

 either side of the median concavity of the tegumen ; subunci long, bent close to their massive 

 base and gradually tapering to the apex ; tegumen large, the dorsal part of the vinculum pro- 

 longed towards the eighth abdominal segment by a rounded expansion, ventral part narrow ; 



Fig. 179. Castalius cretosus cretosus Butler, q genitalia. A, Sudan-Abyssinia border 



B, Elgon, 3500 m., penis, lateral. 



Fig. 180. Castalius kaffana Talbot, <$ genitalia. 



