TESTUDO CARBONARIA. 
striking and constant. The following parallel will exhibit the most important 
of them. 
In T. carbonaria. 
The general colour dark olive, approach¬ 
ing’ in parts to black. 
Scales on the legs a deep bright red. 
General colour of the shell a rich deep 
black, with yellow areolae. 
Tail moderately long. 
Posterior sternal notch lunate, very broad 
and shallow, the depth being less than one 
fifth of the breadth. 
In young specimens the shell is not contracted at the sides; but in older 
ones the middle of the shell is narrower by about an inch than the anterior 
part, and by nearly two inches and a half than the hinder part. The plates 
also lose the sulci and become polished by age. 
I have a shell of this species exhibiting a very remarkable variation in form, 
in which the bones are exceedingly thick and heavy, and raised beneath each 
plate, so as to give a considerable degree of elevation to each dorsal plate; the 
areolae are truncated. (See the Plate B.) 
The habits of this species resemble those of T tabulata ; but it inhabits a 
more southern latitude, as I believe it is not found in any part of the United 
States. It is very common in Brazil, Demerara, and the whole of Tropical 
America, as well as in the island of Jamaica. 
The egg is very similar to that of T. tabulata , hut rather smaller, being an 
oblate spheroid, of which the greater diameter is 1 inch 9 lines, and the less 
1 inch 6 lines. 
In T. tabulata. 
The general colour of the skin a lightish 
olive. 
Seales on the legs yellow. 
Ground colour of the shell fuscous, in 
old specimens brownish yellow, with yel¬ 
low areolae. 
Tail extremely short. 
Posterior sternal notch triangular, near¬ 
ly half as deep as it is broad. 
