SNAKES. 105 
d. Scales keeled ; labial plates not pitted: nostrils in a single plate. 
Asiatic. 
16. ENyeRus. 
Head covered with many sided, subimbricate scales, becoming 
larger behind ; internasal plates rather large: labial shields not pit- 
ted: nostrils lateral, in a single plate: eyes lateral; pupil elliptical, 
erect: scales keeled: subcaudal plates one-rowed : spurs very small, 
scarcely apparent in the female. 
Enygrus, Wagler, Syst. Amph. 167, 1830 (description and part 
of Synonyma). Dum. § Bib. Erp. Gen. vi. 479. Candoia, Gray, 
Zool, Misc. 43,1842. Cenchris sp., Gray, Griffith, A. K. ix. 97. 
Xiphosoma sp., Fitz. N. Class. 54. Tropidoboa, Homb. & Jacq. 
Voy. au Pole Sud. 1842. Boa sp., Schneider. Vipera sp., Daud. 
* Upper edge of the phrenal region angular. 
1. The Canpoia. Enygrus carinatus, Dum. § Bib. Erp. Gen. 
vi. 479. Boa carinata, Schn. Amph. ii. 261, 1801. Merrem, Ann. 
Wetter. ii. 60, t. 9, 1810. Daud. Rept. v. 222. Schlegel, Phys. 
Serp. ii. 397, t. 14, f.12,13. Abbild. 55, t.17, f.6,7. Seba, ii. 
t. 28, f. 63,4. Candoia carinata, Gray, Zool. Misc. 43. 1. Vipera 
Bitis, Daud. Rept. vi. 157. Xiphosoma carinata, Fitz. N. Class. 54. 
Cenchris ocellata, Gray, Griffith, A. K. ix. 97. Boa ocellata, 
Oppell, MSS. Mus. Paris. Enygrus (ocellatus), Wagler, Syst. 167 ? 
E. regius, Fitz. Syst. 24. 
Scales of the forehead as small as those of the crown; upper 
edge of the phrenal regions angular: tail with two or three large 
white spots (no black streak on each side nor along the middle of 
the belly) ; ventral shields 167 to 180. 
a,b. In spirits. “ New Guinea” (Amboina?). From the Leyden 
Museum. 
‘* Boa carinata, Schlegel.” 
** Upper edge of phrenal region rounded. 
2. Brsron’s Enyerus. Enygrus Bibroni, Dum. & Bib. Erp. 
Gen. vi. 483. Tropidoboa de Bibron, Homb. & Jacg. Voy. au Pole 
Sud, Ophid. t. 1. 
Scales of the forehead larger than those of the crown ; upper 
lip of the phrenal region rounded; a black streak on each side of 
