On new Snakes in the British Museum. 453 



series of black spots. Hind wing deep purplish red- 

 brown ; the underside whitish, tiie costal and terminal 

 areas suffused and irrorated with brown ; a discoidal lunule 

 and sinuous postmedial line. 



Hah. New Zealand, Middle I., Orepuki (Bunlop), 1 ? 

 type. Exp. 5Q mm. 



LVII. — Descriptions of neio Snakes in the Collection of the 

 British Museum. By G. A. BouLENGER, F.R.S. 



Nothopsis affinis. 



Roslral twice as broad as deep, not visible from above, its 

 upper angle truncate and narrowly separating the nasals ; a 

 pair of internasals, followed by a pair of prajfrontals, the 

 latter separated from the frontal by three series of small 

 scales ; frontal large, cordiform, a little broader than long, with 

 a median cleft in its anterior half; parietals nearly twice as 

 long as the frontal and separated from it by one or two series 

 of granular scales ; two small supraoculars ; temporal scales 

 small, granular, keeled ; two series of small scales between 

 the eye and the upper labials, which are ten in number ; a 

 pair of very small chin-shields. Scales in 27 rows, obtusely 

 keeled, laterals much narrower than dorsals. Ventrals 162 ; 

 anal entire ; subcaudals 98. Greyish yellow above, with a 

 median series of rhomboidal or quadrangular black spots and 

 a lateral series of A -shaped black markings more or less 

 confluent into a zigzag band ; head black above ; upper lip 

 and lower parts yellowish, dotted with black. 



Total length 320 mm.; tail 100. 



A single female specimen from Salidero, N.W. Ecuador, 

 350 feet. 



This species is very nearly related to N. rugosa of Cope, to 

 which I had referred the specimen when it was received in 

 1901. But the British Museum having now acquired an 

 example which I take to be a true N. rugosa, from Carri- 

 blanca, Costa Rica, I find the Ecuador snake to differ in the 

 feebly keeled scales, the presence of a pair of prsefrontal 

 shields, the larger frontal and parietals, and the more feebly 

 angulate ventral shields. 



Phrydops, gen. nov. 

 Maxillary teeth 22, small, equal; mandibular teeth sub- 

 equal. Head distinct from neck, moderately elongate, with 



