42 
Zoological Miscellany, 
III. Epicrates (and Enygris)^ Wagler. Body fusifoim : muzzle shield- 
ed : labial shields flat, short, slightly pitted on each side, with a large lo- 
real over the labials, a large anterior and four small posterior oculars; su- 
perciliary shield distinct. — Rarely entering the water. 
1. Epicrates Cenchria. Boa Cenchria^ Linn. B. annulifer, Baud. Co- 
luber dubius, Gmel. Seba, t. 56, fig. 4. Boa maculata, Guilding, MSS. 
Inhabits Central America : Trinidad. Brit. Mus. 
Var. 1. — Spots confluent. Boa regia, Shaw. Boa lateristriga, Boie. ? 
Enygris regia, Wagler. 
inhabits Martinique. Mus. Leyden. 
Var. 2. — Loreal shields short, high, dorsal rings with a central spot. 
Inhabits Chagres. Brit. Mus. 
IV. XiPHOsoMA. Body short, thich, compressed: head large: muzzle 
six-shielded, all the labial plates concave above, with a deep pit on the 
hinder edge : tail rather short. 
1. Xiphosoma canina. Boa canina and B. Hypnale, Linn. B. exigua, 
Laur. B. aurantiaca and B. thalassina, Lacep. Seba, ii. t. 34, fig. 1. 
Green. Inhabits Central America. Brit. Mus. 
2. Xiphosoma olivacea. Olive (when alive) : back with three series of 
angular marks, the central ones broadest: loreal plates 2, large, front 
largest : inter-loreal 5, small. 
Inhabits ? Surrey Zoological Gardens, 1840. 
V. CoRALLUs, Baud. Body elongate, compressed: head moderate; 
muzzle two-shielded; upper labial shields two-rowed, lower anterior labial 
shields flattish, hinder ones very deeply pitted : tail elongate, slender : lo- 
real shields 2 or 3, with a large anterior ocular plate, rest of the eyes sur- 
rounded with small scales. Brown and variegated. 
* The front upper labial shields nearly fiat, loreal shields three, middle 
small. 
1. Corallus maculatus. Pale brown, with white spotted, dark brown 
spots ; crown with three diverging, white-edged, brown streaks ; lips and 
beneath pale yellowish. 
Inhabits Berbice. Brit. Mus. 
The front upper labial shields slightly pitted, two loreal shields. 
2. Corallus Hortulanus. Boa Hortulana,\Ami. Col. Ho7'tulana,lAim. 
Vipera bitis. V. Maderensis, Laur. V. cwrulescens, Merrem. V. Made- 
reus. Baud. Boa elegans. Baud. B. Merremi, Schn. Xiphosoma dor- 
salis, Wagler. Corallus obtusirostris. Baud. 
Young; XipA. Wagler. Var.? Boa modesta,BevLS. 
Inhabits Central America. Brit. Mus. 
3. Corallus Cookii. Pale brown, with variously shaped pale-edged 
(sometimes white-eyed) dark spots: head regularly brown-spotted and lined, 
2 round spots on the occiput, a small brown spot at the back angle of the 
eye, with a larger oblong spot behind it. 
Inhabits America. Brit. Mus. Edw. Cooke, Esq. 
VI. Heleionomus. Body fusiform (compressed?): tail short: head 
moderate ; muzzle shielded ; frontal shields 3, 3 ; cheeks scaly, with some 
