16 CHELONIA. 
6. Cinosternum integrum. 
Kinosternum integrum, Leconte, Proc. Ac. N. Sc. Philad. 1854, p. 183. 
Hab. Mexico (Pease). 
Shell without keel. Sternum a little emarginate behind, bivalved, entirely closing 
the box. Gular plate small, nearly equilateral. Axillary long and narrow, touching 
the inguinal by a point. Head and neck brown, spotted with yellow, a large orange 
spot behind the eye somewhat varied with black ; jaws yellow. 
The specimen described is 43 inches long. 
Bocourt (Journ. Zool. 1876, p. 393), in his synopsis of the species of this genus, 
includes the description of what he considers the species named by Leconte; however, 
I suspect that he had a distinct species characterized by spotted jaws, and by a sternum 
not emarginate behind. Leconte’s description also is somewhat inaccurate, inasmuch 
as he ascribes a keel to this species in his diagnosis, denying its presence in the more 
detailed description. 
On the other hand, I am inclined to think that the Cinosternum rostellum, Bocourt, 
l. c. p. 391, from Guanajuato, cannot be specifically separated from C. integrum. 
7. Cinosternum effeldtii. 
Cinosternum effeldtii, Peters, MB. Ak. Wiss. Berl. 1873, p. 603, cum tab. 
? Cinosternum berendtianum, Cope, Proc. Ac. N. Sc. Philad. 1865, p. 189; Bocourt, Journ. Zool. 
1876, p. 395. 
Hab. Mexico, Vera Cruz (Peters); GuatemaLa (Salvin). 
Shell with a single keel. Sternum not emarginate behind, with the two joints, by 
which the lobes are attached to the middle portion, well developed; middle portion 
shorter than the hind lobe, but almost as long as the front lobe. Gular longer 
than broad, and longer than the median suture of the front lobe. Inguinal and 
axillary scutes separate from each other. Head and jaws marked with brown and 
yellow, 
I have examined two specimens found by Mr. Salvin in Guatemala, an adult male 
and female, the latter being 4 inches long. From Peters’s description it would appear 
that sometimes the axillary and inguinal scutes are in contact with each other by a 
point. JI am by no means assured of the identity of this species with Cinosternum 
berendtianum of Cope, although there can, I think, be no doubt that the species 
described by Bocourt under the latter name is, in fact, the Cinosternon effeldtit of 
Peters. Although Cope says nothing of the coloration of the jaws, he states that 
Cinosternum berendtianum is most nearly related to C. leucostomum, thus apparently 
letting us infer that both are characterized by yellow unspotted jaws. 
