New Lepidoptera collected by Mr. T. A. Bams 73 



The form we have placed as a race of subomatus was not easy to 

 separate from dilutus, but the measurements taken do not bring it 

 in the dilutus series. We give the points of differentiation in our 

 description of the race. 



We regret that more specimens of these forms were not available, 

 but if we take the tendency shown by these together with the general 

 coloration and pattern, the probability is that our division and sub- 

 division is correct. 



The times of appearance, according to data preserved on specimens 

 in the Joicey and other collections, are as follows :■ — 



C. eupale eupale .. 

 G. eupale subsp. 

 C. dilutus 

 G. subomatus 

 G. subomatus subsp 



No data. 



January to October. 

 December and April. 

 April to December. 

 January to April. 



It does not appear that we have to deal with any seasonal forms. 



Genitalia. — (Plate VI.) 



The most obvious differences to be noticed in the series examined 

 occur in the uncus, in the juxta, and in the valves. 



The extreme forms of uncus are seen in subomatus (fig. 5a), and in 

 subomatus subsp. (fig. 6), but all intermediate forms were found. 



The juxta (also known as ring-wall and penis-funnel) exhibits its 

 extreme forms in eupale eupale (fig. la), dilutus (fig. 3a), and subomatus 

 subomatus (fig. 5b). 



A setose membrane connects the lateral edges of the juxta with the 

 inner surface of the valves. This membrane, near its attachment to 

 the juxta, develops into a slightly cbitinized process, also covered 

 with setae, and this process exhibits small variations, especially in 

 its proportions as compared with the rest of the organs. 



Finally the valve exhibits two different formations of the dorsal 

 edge as shown in eupale (fig. 1) and in subomatus subomatus (fig. 5). 



For other details see explanations facing plate. 



The following specimens were examined : — 



C. eupale eupale ... Sierra Leone, 2. 



C. eupale subsp. ... Cameroons, 1 ; Uganda, 1. 



C. dilutus ... Nyasaland, 6; South-East Congo, 1; Nairobi, 1. 



G. subomatus ... Cameroons, 1 ; Congo, 1. 



C. subomatus subsp. Uganda, 1; Nairobi, 1. 



