278 Mr. A. R. Wallace's Notes 



This genuSj and those which have been separated from 

 it, furnish us with examples of almost all the anomalies 

 of variation. Some species present an amount of varia- 

 tion perhaps greater than any to be found among butter- 

 flies; others scarcely vary at all. The sexes are, in some 

 species, absolutely without a feature of their colouration 

 in common ; in others they are hardly distinguishable. 

 In a large number of species there is the most wonder- 

 ful mimicry of other groups, so thai they have been 

 mistaken for Danaidm and Acrceidce, and there is, perhaps, 

 nothing more striking than the accurate manner in which 

 some African species imitate the striped and spotted 

 Am-cece, which inhabit the very same districts. In the 

 Eastern islands the protective mimicry has sometimes 

 caused the usual sexual characters to be completely re- 

 versed, which has led to confusion in the determination 

 of the species. 



PapiJio Vitellia, figured by Cramer, has been usually 

 placed in this genus, but specimens collected by myself 

 in the original locality, Amboyna, show it to be a species 

 of Elymnias. 



DIADBMA, Boisduval. 

 1. Diadem A Bolina. 



S . Papilio Bolina, Linn. Mus. Lud. Ulr. Reg. p. 295; 



Syst. Nat. ii. 781. Clerck, Icon. t. 21. 

 c?. Papilio Auge, Cram. 190, A. B. 



S • Papilio Lasinassa, Cram. 205, A. B.; Fabr. Ent. 



Syst. iii. pt. i. p. 127. 

 ? . Papilio Ipliigenia, Cram. 67, D. E. 



Cramer figures as distinct species eight varieties of 

 the female, and many others exist in collections. I do 

 not repeat the references to all these, which are to be 

 found in the " Genera of Diurnal Lepidoptera," Moore's 

 '^Catalogue of the East Indian Museum,'' and other 

 works. I woidd remark, however, that Porphyria and 

 Velleda of Cramer, usually placed with this species, seem 

 to me to be females of Diadema Alimena. 



Hah. — Every island in the Archipelago, as well as 

 India, Australia, and the Pacific Islands. (S. Africa ?). 



Mr. Butler has pointed out to me, that Clerck's figure, 

 the only one quoted by Linna3us, undoubtedly represents 



