30 Mr. G. T. Bethune-Baker's notes on 



are, of course, larger ; they are also deeper and less 

 excavated. The clasp 4 a is also very similar when 

 •compared with 2rt, whilst the intromittent organ 4 6 

 assimilates in like manner to the Thecla shape. 



At figs. 5rt and h appear these organs of rhymnus, which 

 might almost be mistaken for unusually small organs of 

 the preceding species. The clasp 5 a is not quite so like 

 that of T. sassanides, but is curiously similar to that of 

 liuiulata (fig. 3rt). The penis is also the same shape as 

 those we have already considered. 



Pretiosa now alone remains to be examined, and in 

 this species these organs bear an even closer resemblance 

 to T. sassanides and liuiulata than do the preceding, as 

 will be seen on comparing fig. 6 with 2 and 3. The 

 general outline of all these three species is very similar. 

 The clasps of pretiosa (6a) are very similar to lunidata 

 (3 a), whilst the penis of the former (6 6) is very like both 

 the two ThecUe just mentioned. 



If it is considered necessary to produce further evi- 

 dence to prove that all these species are congeneric, the 

 neuration will do so. In the genus Lyccena there are 

 eleven nervules in the fore wings, of which seven and eight 

 (counting German fashion) are forked from a common 

 stem. In Thecla there are but ten veins, none of which 

 are forked. In rhijmnus, tengstroemii, and pretiosa the 

 latter obtains, each having ten veins, all of which are 

 unforked. 



From these three facts I think we shall be amply 

 justified in moving these three species from the genus 

 Lyccena, and placing them in that of Thecla, their posi- 

 tion in which will be immediately following lunidata. 



Perhaps I may be allowed to take this opportunity to 

 make an appeal to collectors of exotic Ehopalocera. I 

 feel sure that the generic organs will often help in 

 clearing up difficulties, where they occur, between si)ecies, 

 and they are probably destined to play a not unimportant 

 part in future classification. If, therefore, those who 

 receive large collections of exotic butterflies would be so 

 good as to let me have otherwise useless specimens, no 

 matter how bad, so that they are absolutely correctly 

 named (this is imperative), they would confer a great 

 benefit on me, and just possibly on lepidopterists in 

 general. I want to obtain some specimens of the various 

 genera which might form a basis on which to work, and 



