Dr. J. Kaup on Nemophis. 301 



Calabaria. 



Head small, short, rounded in front, the same size as the body. 

 Muzzle depressed, rounded ; labial shields flat, |^| ; the hinder 

 small, front moderate ; rostral shield high, large, triangular ; frontal 

 shields three pairs, band-like, subsimilar, followed by a band-like 

 shield continued from side to side, which has behind it a small sub- 

 trigonal shield on each side, with a central large triangular shield 

 between them on the crown. Eyes surrounded by scales on the 

 upper edges of the upper labial shields and the outer edges of 

 the fourth and fifth frontal plates, and with one ocular shield in front 

 and two smaller behind the eyes ; loreal shield single, small. Pupil 

 circular. Nostril lateral, between two small nasal shields. Body 

 cylindrical. Scales broad, triangular, polished, rather sunken and 

 subrugose in the centre. Ventral shields very numerous, band-like, 

 transverse, about half as wide as the diameter of the body. Vent 

 small, with a single preanal shield. Spurs large, distinct. Tail short, 

 as thick as the body, blunt and rounded at the end. Subcaudal 

 shields broad, band-like, one-rowed like the ventral shields. 



I think it is probable, when some other specimens have been exa- 

 mined, that the band-like shield extending across from the upper 

 edge of each eye will be found to be composed of three shields, like 

 the band behind it, which are here united into one band ; and then 

 the head-shields will lie thus : — three pairs of band-like frontal, two 

 smaller triangular superciliary shields over each eye, having in the 

 middle between them two triangular parietal shields. 



Calabaria fusca. 



Dark brown, some of the scales yellowish, scattered singly or in 

 groups on the back and sides ; ventral shields greyish ; sides of the 

 belly with a few unequal yellow spots. 



Length 36 inches, diameter 1 inch. 



Hab. Old Calabar, W. Africa (W. Logan, Esq.). 



Since this paper was read, I have discovered a young specimen of 

 this Boa among the specimens obtained from the Zoological Society, 

 which they had received from Fernando Po. It is about half the 

 length and diameter of the specimen from Old Calabar. It has the 

 head-shields more uniform, and as I supposed they might be when 

 I described that specimen. 



It has three pairs of band-like frontal shields over the forehead, 

 a rather large parietal shield behind them on the crown of the head, 

 and two small subequal superciliary shields between the outer edge 

 of the parietal and the eye, on each side a narrow transverse band- 

 like central shield behind, and rather broader than, the parietal 

 shield, with a small scale-like shield, like those on the neck, behind 

 and on the sides of it. 



On Nemophis, a New Genus of Riband-shaped Fishes. 

 By Dr. J. Kaup. 



In the collection at the Museum of Natural History in Paris I 

 Ann. $ Mag. N. Hist. Ser. 3. Vol. ii. 21 



