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Show 390 MR. H. J. ELWES ON S O M E [May 6, I have to thank for allowing 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 usually different in number and position in the two sexes, afford good specific characters. The distribution of the genus is rather peculiar. 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 different 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 them in a satisfactory way. Celebes and Amboina have each one peculiar species. Madagascar has two ; and one is found at Sierra Leone. SECT. I. A. Costal fold present, with 4 red bands on fore wing. 2 with one spot between 2nd and 3rd bands. a. <$ with 3 black spots between 2nd and 3rd band. a'. 3rd band concave, 2nd comma-shaped. 1. B I Z O N E PUELLA, Drury, Exot. Ins. ii. p. 3, t. 2, 2 (1773). B. peregrina, Walk. Cat. ii. p. 551, in part. The type was a § from South India. I have a 2 from 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.? PALLENS, 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 cf fr°m Sikkim which is rather intermediate. Others from the Naga Hills seem more distinct from the type. Mr. Butler has placed specimens 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. B I Z O N E P E R E G R I N A , 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 be distinguished from the last in the J. though possibly not in the 2 sex. |