6 CHELONTA. 
longitudinal bands on the upper part of the head are less numerous and less distinct, 
the lateral band over the temple is not dilated in the middle, and the band on the chin 
is bifurcate behind and continued as one of the lateral bands of the throat. The 
shell of the adult is brownish horn-coloured, each costal scute being marked with an 
oblong blackish spot situated high above, and very close to the vertebral scutes; some- 
times a yellowish ring passes at some distance round the spot. The last vertebral 
scute bears also a small blackish spot in the middle of its suture with the costal scutes. 
The sternum is marbled with black, and only now and then faint traces of symmetrical 
markings may be discerned. 
I have not seen the young of this species; it is probably much more brightly 
ornamented than the adult, and there are indications of the sternum having similar 
symmetrical markings at this age as are observed in the other allied species. 
We have received six specimens, from 10 to 14 inches in length, through Mr. Sumi- 
chrast, who obtained them at Tapana and San Mateo, near Tehuantepec. A seventh 
specimen from ‘“ Mexico” has been in the British Museum for many years, and was 
referred by Dr. Gray to his Emys venusta. 
I have not the least doubt that the specimen from Rio Nagualate on the west coast 
of Guatemala, described by Duméril and Bocourt as Emys grayi, belongs to the same 
species, the costal spots having become obsolete. Specimens sent by Sumichrast to 
M. Bocourt were confounded by the latter with Hmys callirostris, a sbort-snouted 
totally distinct species. 
This species is aquatic, but herbivorous. 
. RHINocLEMMYS or CHELOPUS. 
7. Emys pulcherrima. (Tabb. VII. & VIII. fig. A.) 
Emys pulcherrima, Gray, Cat. Shield Rept. p. 25, t. 25. figg. 1, 2 (this figure is faulty in repre- 
senting six longitudinal bands on the neck instead of five). 
Callichelys pulcherrima, Gray, Ann. & Mag. N. H. 1863, xii. p. 181 (and Suppl. Cat. Shield Rept. 
p- 49, where the species is confounded with a specimen said to come from South Africa). 
Rhinoclemmys pulcherrima, Gray, Ann. & Mag. N. H. 1878, xi. p. 145. 
Hab. Mexico, Presidio (Forrer). 
The neck is ornamented with five parallel rather narrow red bands edged with 
blackish ; occipital region with some detached spots of similar coloration. A narrow 
stripe, similarly coloured, runs along the edge of the upper part of the snout and stops 
behind the supraciliary region. Two similar bands from the eye, round the snout, 
above the nostrils, and finally another round the upper jaw. A short stripe along 
the median line of the upper part of the snout. Sides of the neck and throat finely 
punctulated with black. Each scute with some short, curved, yellow, dark-edged bands. 
Central parts of the sternum blackish ot black. Shell depressed, oblong, with the 
