8 H. STEMPFFER 



Paris ; Dr. van Someren, Ngong, Kenya ; Dr. van Son, Pretoria ; and Mr. G. E. 

 Tite, Tring. 



DIAGNOSES OF THE GENERA, WITH LISTS OF SPECIES 



Genus ALA EN A Boisduval 

 Alaena Boisduval, 1847, Voyage Delegovgue 2 : 591 ; Aurivillius, 1898 : 254 ; 1919-25 : 298 ; 



Desmond Murray, 1923 : 47 ; Pinhey, 1949 : 96, pi. 15, figs 1-3 ; Swanepoel, 1953 : 182, 



184, pi. 8, figs 38-41. Type-species : Alaena amazoula Boisduval, by monotypy. 



Male fore leg stout, very pilose, especially on the tibia ; tarsus short, not distinctly segmented, 

 strongly spinose ventrally, terminal claws absent ; $ fore leg fully developed, less hairy than 

 that of o*- 



Wing venation (Text-fig. 229). There is a short but distinct precostal vein at the base of the 

 hind wing. 



Male genitalia (Text-fig. 3). Uncus composed of two rounded lobes, densely covered with 

 short hairs and broadly fused to a broad tegumen ; subunci robust, curved near the base and 

 ending in a hook ; vinculum narrow, incomplete ventrally ; the oblong valves are directly fused 

 to the extremities of the tergite and are partially joined together on the lower edge, whilst their 

 upper edges are bridged by a narrow membranous strip, thus forming a sheath for the strong, 

 subcylindrical penis, which is somewhat broadened just before its truncated apex ; there are a 

 few short hairs on the distal portion of the valves. 



The male genitalia of other species, as far as they are known, closely resemble those 

 of A. amazoula ; they differ only slightly in the shape of the valves. The genus 

 seems homogeneous, both in structure and in general appearance. The species of 

 Alaena are somewhat small with oblong, rounded wings, yellowish or black in colour, 

 spotted with white. They remind one a little of the Acraeinae, in which family they 

 were originally included. 



Fig. 3. Alaena amazoula Boisduval, o* genitalia. 



