( xxiii ) 



Professor Poulton pointed out that the specimens captured 

 on Dec. 3, 10, and 17 confirmed the conclusions derived 

 from a study of Dr. Carpenter's earlier captuies in the same 

 island (Proc. Ent. Soc, 1911, pp. xci-xcv). Although Dr. 

 Carpenter had found that the Planema models were more 

 abundant in the central forest area of Damba Island, yet even 

 here all except Planema paragea were outnumbered in his 

 collection by the respective mimetic forms of Pseudacraea. 

 The proportions of these mimetic forms differed, as they did 

 in the jungle, from those of the mainland only twenty miles 

 away ; while on the island, in the forest as well as in the 

 jungle, transitional forms were far more numerous as well 

 as more truly intermediate than on the mainland. It was 

 also notewoi'thy that out of four female Ps. hohleyi one 

 should have borne the coloux'ing of the male. The examples 

 of Pl. paragea were all dark forms with the pale markings 

 greatly reduced. 



Baroxia brevicornis, Salv. — Mr. A. E. Gibbs exhibited two 

 specimens of the scarce butterfly Baronia brevicornis, and read 

 the following note : — 



"In our Transactions for 1893 the late Mr. Salvin de- 

 scribed a butterfly which had been captured in Mexico. To 

 I'eceive it he erected a new genus which he called Baronia 

 after the captor of the insect, Mr. O. T. Baron. It belongs 

 to the Papilio7iidae, but is distinguished by its short antennae 

 and peculiar neuration from Papilio. It seems to come nearest 

 to Pa/rnassius The insect was figured and again described 

 by Mr. F. Du Cane Godman in the Supplement to the Rhopa- 

 locera in Biologia Gentrali Americana. It is also figured by Seitz 

 in the volume on American butterflies now in course of pub- 

 lication, and Dr. Jordan who writes the text says : ' Mr. O. T. 

 Baron discovered this peculiar insect in the neighbourhood 

 of the town of Chilpancingo, recently destroyed by an earth- 

 quake, where the butterflies were flying in June and July, at 

 a height of 4,500 ft. He only took five specimens which are 

 in the collections of Godman, Rothschild, and the Californian 

 Academy.' 



' ' I have recently acquired a pair from the same locality as 

 the Salvin type specimens come from — the Sierra Madre district 

 of Mexico— at an elevation of 1,000 metres— and as the insect 



