Zoological Miscellany . 
59 
Tolarenta Wilkinsonii^ (jivdcy. Savigny, Kept. Egypt, 1. 1, fig. 3. Brown 
white-dotted, beneath white : tail black, base with rings of white becoming 
confluent at the tip. 
Inhabits Egypt ; Sir G. Wilkinson. Brit. Mus. 
Cyrtodactylus ocellatus. Head, neck and throat pale brown, with large 
irregular brown marblings : back brown, with 2 large white-eyed black spots 
on each side, behind the fore legs ; legs and tail pale brown, base of the toes 
rather thick, end compressed, thin : labial plates | 1 3 ; rostral large, broad : 
tail tapering, subcylindrical, with small scales above, irregular bands be- 
neath. 
Inhabits Tobago; G. Buchanan, Mus. ZooL Soc. No. 117. 
Cycliira quinquecarinata, Gray. Head-shields subequal, those over the 
eyes the smallest : dorsal crest low, continued to the loins : tail depressed at 
the base, with the central and 2 series of spinose scales on each side much 
larger than the rest, and with a series of smaller scales between each trans- 
verse series of larger ones ; rather compressed, with subequal whorls of spi- 
nose scales at the end : femoral pores 5.5 or 6.6. 
Inhabits Demerara ? Brit. Mus. 
Monographic Synopsis of the Water Snakes, or the Family 
Hydridm. By J. E. Gray, F.R.S. 
The family consists of 23 genera and 43 species ; of which 20 are found 
in the Indian Ocean, 16 in the salt-water ditches of India and the neigh- 
bouring islands, and 6 are found in similar situations in tropical America. 
Schlegel, who appears to have paid very little attention to the first divisions 
of this family, describes only 27 species : 30 of the species here described 
are in the collection of the British Museum, and I have seen several others 
in other collections, which I believe to be hitherto unrecorded. 
Earn. V. — HYDRiOiE. The ventral shield narrow, hexagonal or band- 
like : the hinder limbs not developed : the eyes and nostrils superior, ver- 
tical, the latter valvular ; pupil small, round : tail compressed or conical. 
Living in the sea or salt-water lakes. 
I. Belly keeled with two rows of small scales like shields, often united t 0 ‘ 
gether into a single broad six-sided shield. Tail compressed, except in Achro- 
chordus. Hydrina. 
A. Head shielded to the nape. Nasal shields very large, with the large 
operculated superior nostrils in their hinder edge : the frontal shields 2 pair, 
small : loreal shield none : labial shields high, large. 
a. Body covered with 6-sided, smooth or scarcely keeled scales. Head as 
large as body. (Pelamina). 
I. Pelamis. Head long, depressed, gape wide. 
1. Pelamis bicolor, Menem. Anguis platura, Linn. Hydrus bicolor, 
H 2 
