194 DR. J. E. GRAY ON THE TORTOISES. {Mar. 11, 
plates regular. Toes strong, covered with band-like shields, united, 
to the claws, by a very narrow web covered with scales; hind toes 
longest. Asiatic. 
The skull and palate similar to those of Malaclemmys, but the feet, 
shell, and head different. 
1. DAMONIA MACROCEPHALA. 
Geoclemmys macrocephala, Gray, P. Z.S. 1859, p. 479, t. xx1., 
1861, p. 139. 
Emys trijuga, Mus. Utrecht. 
Hab. Siam and Cambogia. 
The skull (as seen through the skin in the stuffed specimen) has 
a very broad, strong, rather convex zygomatic arch between the orbit 
and the ear-cavity ; crown broad, flat, trigonal, broader and trun- 
cated behind. 
Skeleton in the British Museum. Skull large; nose rather pro- 
duced, conical ; crown flat, rhombic, short ; orbit lateral, very large ; 
zygomatic arch very broad, short ; palate slightly concave ; internal 
nostrils near the middle of the palate; alveolar surface of the upper 
jaw rather arched, very convex. The lower jaw curved upwards and 
acute at the tip, with a very broad, rather concave alveolar surface 
the whole of the length, broader and most concave in front. 
There is a second skeleton, of a small specimen, of this species, 
which, from the bad state of the shell, must have been kept in con- 
finement for a long time. 
2. DAMONIA REEVESII. 
Emys reevesii, Gray, Syn. Rept. 73. 
Geoclemys reevesii, Gray, Cat. Shield Rept. p. 18. 
Skull (as seen through the skin in the stuffed specimen) small, 
ovate trigonal; crown rhomboid, rather convex, produced in the 
centre behind, about as long from the back edge of the orbit as from 
the nose to that part of the skull; orbit rather large, lateral; zygo- 
matic arch short, broad, wider than the back of the orbit, and con- 
fluent with the crown above, not quite so wide as the front edge of the 
tympanic cavity behind. Sheath of the upper jaw simple, without 
any central hook. Lower jaw strong, convex in front, and with a 
convex horny sheath. Toes enclosed in the skin nearly to the claws, 
covered above with band-like shields. 
An adult specimen in spirit, obtained from Mr. Blyth, most pro- 
bably from India, but received without any habitat. Head large, 
strong; crown flat and short, not so long as wide; nose high, 
rather shelving to the mouth; eyes lateral; cheek flat; temple and 
zygomatic process convex. Upper beak very large and thick, with a 
straight edge without any central notch ; the lower curved and acute 
in front, convex beneath. The alveolar processes very broad ; upper 
rather convex and rugose ; lower rather concave and broad the whole 
length of the side of the jaw. Neck and feet lead-coloured, without 
any streak. The thorax solid, thick, oblong, with three very ob- 
