390 MR. H. J. ELWES ON SOME [^^^.V ^> 



I have to thank for allowino; me to borrow for comparison specimens 

 about which I was doubtful. As the species are numerous, little 

 known, and closely allied, I have thought it best to give a list of 

 those known to me. I think that the species for the most part do 

 not vary much, and that the characters by which I have separated 

 them seem constant in all those species of which I have seen many 

 specimens. The form of the costal fold and the lobe beneath the 

 fore wing, which is found in the males of most of the species, and 

 the number, position, and colour of the bands on the fore wing, as 

 well as the discal spots, which are nsually different in number and 

 position in the two sexes, afford good specific characters. 



The distribution of the genus is rather pecuhar. It seems to 

 reach its maximum of development in the Eastern Himalayas, where 

 no less than fifteen species are found, six only of which are as yet 

 known to occur west of Nepal. In Southern India and Ceylon only 

 three occur. In China there are seven, of which several seem to 

 belong to a diff'erent group, in which the costal fold is absent or 

 only slightly developed. In Java, Sumatra, Borneo, and the Malay 

 peninsula we know of six or seven, and these too little to separate 

 tliem in a satisfactory way. Celebes and Amboina have each one 

 peculiar species. Madagascar lias two ; and one is found at Sierra 

 Leone. 



Sect. I. 



A. Costal fold present, with 4 red bands on fore wing. 

 $ with, one spot between 2nd and 3rd bands. 



a. (S with 3 black spots between 2nd and 3rd band. 



a. 3rd band concave, 2nd comma-shaped. 



1. BizoNE PUELLA, Drury, Exot. Ins. ii. p. 3, t. 2, $ (1/73). 

 B. peregrina, Walk. Cat. ii. p. 551, in part. 



The type was a $ from South India. I have a $ fi-om Bangalore 

 which agrees with the plate, and both sexes from Kulu, which agree 

 in the bands and spots. The male has a black or pinkish dash 

 beyond the third band, which is sometimes edged with black. 



Var.? FALLENS, Butl. Trans. Ent. Soc. 1877, p. 338, $ . 



This may be distinct, but the bands are usually much straighter 

 and more parallel, and the insect smaller. I have a single (S from 

 Sikkim which is rather intermediate. Others from the Naga Hills 

 seem more distinct from the type. Mr. Butler has placed speci- 

 mens from Moulmein, Sylhet, and Kangra under this name in the 

 British Museum. 



a" . 3rd band connected with 4th by a red line on costa; a deep 

 cavity in the underside of fore wing. 



2. BizoNE PEREGRINA, Walk. Cat. ii. p. 351, in part. 

 Walker confused two or three species under this name, which I 



restrict to the Ceylon species, which I have seen only in Mr. Moore's 

 collection. It can certainly he distinguished from the last in the J, 

 though possibly not in the 2 sex. 



