2io H. STEMPFFER 



C. ertli. Male genitalia (Text-fig. 183) : uncus composed of two small flattened lobes fused 

 to the tegumen ; subunci very long with massive bases, only slightly curved, tapering gradually 

 to their apices ; tegumen strap-shaped ; vinculum wide above, narrow below ; lower fultura 

 consists of a small spatulate lamella ; valves oblong, upper process folded under the lower one 

 and ending in a slender point with serrated edges, lower process widely connected to the vincu- 

 lum by a membrane and having a rounded apex ; penis of normal size and resembling that of 

 carana ; uncus pilose, hairs on valves more numerous and longer than on the uncus. 



C. margaritaceus. Male genitalia (Text-fig. 184) : uncus composed of two small oval lobes 

 fused to the tegumen ; subunci long, almost straight, with massive bases and tapering gradu- 

 ally to their apices ; terminal margin of tegumen smoothly concave ; vinculum wide above, 

 narrow below ; lower fultura consists of a small triangular lamella ; valves very large, the upper 

 process, which is folded under the lower one, ending in a long sharp spinose point, the lower 

 process strongly dentate, the shape of the teeth varying in individual specimens ; penis as in 

 carana ; uncus and valves pilose. 



Fig. 183. Castalius ertli Aurivillius, o* genitalia. 



Fig. 184. Castalius margaritaceus Sharpe, <$ genitalia. 



