1908.] INDIAN LYC^NID BUTTERFLIES. 677 



followed him. Col. Bingham had in his possession (lent from 

 India) the type specimen of chennellii, and when I saw this- 

 specimen, it appeared at once that it was the insect I had been 

 refusing to recognise as chennellii. 



chennellii has all the aspect of a Gyaniris, but the neuration is 

 not that of Cyaniris but of Zizera. The ancillary appendages 

 are very diflFerent from those of Cyaniris and also from those of 

 Zizera, and approach more nearly to those of Everes. 



It appears to requu"e a new genus to contain it, and I therefore 

 propose for it Bothria *, n. g. 



I would characterise the genus as having C. chennellii de Nice- 

 ville as type ; as closely resembling Cyaniris in facies, but 

 having the anastomosing subcostal vein as in Zizera ; as having 

 the ancillary appendages very different from Cyaniris and Zizera. 

 The dorsal portion {tegumen) consists of a central piece, with two 

 horns jointed to it, both of very similar form and structure to 

 those of Everes {Cyaniris and Zizera have the dorsal armature in 

 two lateral portions, the actual dorsum being merely part of the 

 chitinous ring of the 9th abdominal segment with no armature). 

 The claspers have the two processes (characteristic of Lycsenids) of 

 nearly equal size, each being very long and slender but reminding 

 one a good deal of Everes. In Cyaniris and Zizera the ventral, 

 soft {i. e., unarmed with spicules or teeth) process is nearly or 

 quite obsolete. 



It remains to deal with Col. Bingham's Cyaniris. As a 

 specific description, de ISTiceville's description of chennellii is 

 all but accurate for this species, which is however a Cyaniris (and 

 chennellii, as we have just seen, is not). 



As a Cyaniris it belongs, however, as an extreme instance, to 

 a division that requires a sepai"ation generically. This section 

 is especially characterised by each lateral piece of the dorsal 

 armatui-e of the ancillary appendages having a jointed horn or 

 process (as in so many Lycsenids) and not merely a simple process, 

 usually rounded and soft but in many species with a more or less 

 developed chitinous point or spike. 



I would call this new genus Notarthrinus. 



NOTARTHRINUS t, n. g. 



Differs from Cyaniris in each portion of the dorsal armature of 

 the ancillaiy appendages having the separate jointed spine (as in 

 Lyccena). In Cyaniris the spine, when there is one, is merely a 

 chitinous process continuous with its base. 



Type, binghami, sp. n. 



'musina (and corythus, which seems to be identical with 

 musina) and catreus probably belong to this genus. 



* j3o9pos a pit, in allusion totlie pitfall into which it led de Niceville. For those 

 who like a little canine flavour to their classics, it maj^ suggest that it is like botJt 

 Cyaniris and Zizera without being either, and has perhaps some allusion to the 

 bother which de Niceville and others did not suffer but passed on to me. 



t voTOS apQpos. 



