78 tME ENtOMOLOGIST. 



pickle-bottle, and turned on the tap to a steady drip. For the first 

 couple of months I threw in a knob of carbonate of ammonia 

 about once a week, and then left them to themselves for another 

 four months. On examining the result, I found that a wretched 

 slaty-black slug had taken to aquatic habits, and had pretty well 

 cleaned out my pupae. There was, however, a solid unctuous 

 substance representing the head and thorax of one of the speci- 

 mens, and greatly resembling a piece of real adipocere which 

 Prof. Stewart kindly gave me some time ago. This has been 

 carefully put away as a treasure for future investigation and 

 exhibition — the sole reward of six months' patience ! 



Folkestone, Jan. 13th, 1895. 



DESCBIPTION OF A NEW LOCAL FORM OF TROIDES 

 VICTOhllM (Gray) FROM BOUGAINVILLE ISLAND, 

 SOLOMON GROUP. 



By the Honourable Walter Rothschild, F.Z.S., F.E.S., &c. 



I HERE use the generic term Troides, Hiibn., because it has 

 priority by about sixteen years of Boisduval's Oriiithoptera, and 

 because I so use it in my forthcoming revision of the Old World 

 Papilioninse. To facilitate the student, I include a comparative 

 description of T. victorice (type) and its subspecies T. victorice 

 regince (Salv. & Godm.). 



Typical T. victories occurs in Guadalcanar ; T. victorice regince 

 in Maiaita ; and my new form, T. victorice regis, in Bougainville. 

 I have a male from Alu which stands intermediate between 

 T. victorice and T. victoria regis, which proves the latter to be 

 only a subspecies and not a distinct species, as is also T. victorice 

 regince, for 1 have seen an intermediate. 



MALES. 



1. T. victorice regince, Salv. — Fore wings: base shining green, 

 stretching more than or about five-sixths into the cell ; rest of 

 wing black, with a very large green subapical patch consistmg of 

 three large oblong spots between the 3rd costal and upper dis- 

 coidal nervules, and a small spot behind the first discoidal nervule. 

 In one of the three existing males the patch reaches to the apex, 

 and is joined along the costa by a narrow green streak to the 

 basal area. Hind wing black, with a large green area extending 

 transversely to just beyond the cell and longitudinally to the 

 apex of the cell, within which the green is much clouded with 

 black scales. The discoidal and upper median nervules generally 

 black, but in one specimen powdered with green scales. Between 

 the upper discoidal and middle median nervules there are three 



