Cuar. TX.] THE GECKO. 281 
species ; and Dr. Gray concurring in this opinion, they 
have done me the honour to call it Ceratophora Ten- 
nentii. Its “horn” somewhat resembles the comb of a 
cock not only in its internal structure, but also in its 
external appearance; it is nearly six lines long by two 
broad, slightly compressed, soft, flexile, and extensible, 
and covered with a corrugated, granular skin. It bears 
no resemblance to the depressed rostral hump of Lyvio- 
cephalus, and the differences of the new species from 
the latter lizard may be easily seen from the annexed 
drawing and the notes given below.! 
Geckoes.—The most familiar and attractive of the 
lizard class are the Geckoes?, that frequent the sitting- 
rooms, and being furnished with pads to each toe, they are 
enabled to ascend perpendicular walls and adhere to glass 
and ceilings. Being nocturnal in their habits, the pupil of 
the eye, instead of being circular as in the diurnal species, 
is linear and vertical like that of the cat. As soon as 
evening arrives, the geckoes are to be seen in every house 
in keen and crafty pursuit of their prey; emerging from 
the chinks and recesses where they conceal themselves 
! The specimen in the British 
Museum is apparently an adult 
male, ten inches long, and is, with 
regard to the distribution of the 
scales and the form of the head, 
very similar to C. Stoddartii. The 
posterior angles of the orbit are 
not projecting, but there is a small 
tubercle behind them; and a pair 
of somewhat larger tubercles on 
the neck. The gular sac is absent. 
There are five longitudinal quad- 
rangular, imbricate scales on each 
side of the throat ; and the sides of 
the body present a nearly horizontal 
series of similar scales. The scales 
on the median line of the back 
scarcely form a crest; it is, how- 
ever, more distinct on the nape 
of the neck. The scales on the 
belly, on the extremities, and on 
the tail ave slightly keeled. Tail 
nearly round. This species is more 
uniformly coloured than C. Stod- 
dart ; it is greenish, darker on the 
sides. 
* Hemidactylus maculatus, Dum. 
et Bib, H. Leschenaultii, Dum, 
et Bib ; H.frenatus, Schlegel. Of 
these the last is very common in 
the houses of Colombo. Colour, 
grey; sides with small granules; 
thumb short; chin-shields four; 
tail rounded with transverse series 
of small spines; femoral and 
preanal pores in a continuous line, 
Gray, Lizards, p. 155. 
