RaprAome 
316 
3. Asprpocue ys. The hinder pair of callosities oblong, united 
by their hinder edge only. 
A, livingstonii, Gray, P. Z.S. 1860, 6. t. 22. River Zambesi. 
The only specimen of the Senegal species yet known to me is very 
young; it does not show the sternal callosities, and has still remains 
of the umbilical slit. It may be described as follows :— 
EMYDA SENEGALENSIS, Gray. 
Cryptopus senegalensis, Dum. & Bibr. 
In spirits. Grey; beneath, white. Head above with many sym- 
metrical roundish white spots, and a short white streak in the centre 
‘ of the crown; upper part of the neck with symmetrical white mar- 
bling. Upper shell grey, with small round scattered black spots, 
with a distinct central keel, which is rather broad and smooth in 
front, becomes suddenly narrow, and is converted into a series of close 
tubercles at the middle of the back. Back with rather irregular, 
often interrupted, somewhat concentric lines of small tubercles, which 
converge towards the central keel behind, and with a number of 
larger isolated, but rather crowded, tubercles on the middle of the 
front edge; sternum blackish, white on the margin. 
Hab. Senegal. ; ) 
tin Aapabeus Lp Fe 
a 
6. On New Reptizes AND FisuHEs From MEXxIco. 
iS By Dr. ALBERT GUNTHER. 
A collection of Reptiles and Fishes made by one of the correspond- 
* ents of M. Sallé in Mexico, and purchased for the British Museum, 
contains, besides many other scarce species—as Cubina grandis, Gray, 
Gerrhonotus imbricatus and tessellatus, Wiegm., Geophis (Cato- 
stoma) chalybea, Wagl. (scales keeled), Conopsis nasus, Gthr., Za- 
menis mexicanus, D. & B., Atropus undulatus, Jan., &c.,—the fol- 
lowing new species. 
SAURIA. 
MABOUIA BREVIROSTRIS. 
Diagnosis. —The snout (from the anterior margin of the eye) is a 
little shorter than the width between the orbits. Twenty-four lon- 
gitudinal series of scales round the middle of the trunk, two entire 
and two half series along the back between the white streaks. Two 
large anal shields in front of the vent, with a small additional one on 
each side. A series of large shields along the lower part of the tail. 
Back brown, separated from the sides, which are black, by a white 
streak, running from the snout, above the eye, to the origin of the 
tail, where it is gradually lost. Another streak, less distinct, borders 
the lower lip, and the black coloration of the side. Belly whitish, 
the centre of each scale being minutely dotted with greyish. 
Hab. Oaxaca (Mexico). 
o 
