SNAKES. 10! 
Rept. iii. 133. Daud. Rept. v. 195. ? B. Divinatrix, Lacep. Q. O. 
i. 338, t.. 16, 7. 1. 
Muzzle obliquely truncated ; rostral feebly nicked at the base. 
Inhab. St. Lucia. Gardens Zool. Soc. 
tt One of the hinder phrenals rather larger than the rest ; muzzle 
truncated. 
3. The Emperor Boa. Boa imperator, Daud. Rept. v. 150. 
Dum. §& Bib. Erp. Gen. vi. 519. B. constrictor, 8. Merrem, Tent. 
86. 
The rostral plate rather narrower and slightly nicked below; 
the chin shield moderately high, triangular, equal sided, with the 
two larger sides concave; twenty scales above the muzzle between 
the nasal shields: orbit completely surrounded by sixteen or seven- 
teen scales ; one of the phrenal scales near the orbit rather larger than 
the rest, but never equal to the size of the globe of the eyes: a brown 
stripe on each side of the neck. 
a. In spirits. Young. Mexico? Presented by Edward Cooke, 
Esq. 
b. Skin. Young. Honduras. From Mr. Dyson’s collection. 
ttt One of the hinder phrenals much larger than the rest. 
4. The Curvatier Boa. Boa Eques (Boa Chevalier), Aydoux 
and Souleyet, Voy. Bonite, Zool. t.4, 1842. Dum. §& Bib. Erp. 
Gen, vi. 521. 
The rostral plates one-third narrower below than at the tip 
and strongly nicked; the chin shield triangular, with the longer 
sides concave; twenty or more scales on the muzzle between the 
nasal; orbit surrounded by twelve or thirteen scales; one of the 
phrenal scales near the orbit much larger than the others, and as 
large as the globe of the eye. 
Inhab. Peru. Mus. Paris. 
12. PELOPHILUS. 
Head covered with scales behind and shielded in front: nos- 
trils lateral, between two plates: eyes lateral ; pupil elliptical, erect: 
lip shields flat, without pits: body thick, compressed: scales flat, 
smooth: subcaudal shields one-rowed. 
Pelophilus, Dum. § Bib. Erp. Gen. vi. 523, 1844. 
