1906] New SpEcIES OF TESTUDO AND BAENa. IgI 
The front part has an area somewhat greater than one-third of that 
of the combined bone. The tst costal is almost triangular in 
shape, the 2nd broadens considerably at its distal end, the 3rd 
broadens but little distally, the 4th narrows slightly outward, and 
_ the 5th narrows very considerably towards its outer end. 
Of the epidermal shields the 1st vertebral is nearly twice as 
broad as long, and narrows rapidly toward the front. This shield 
is very different in shape frem the corresponding one of Baéna 
antigua. The 2nd and 3rd vertebrals, of which the 2nd is the smaller, 
are narrower in front than behind and their maximum length is 
about equal to their greatest breadth. The costal shields need 
special mention. A small additional shield is in line with the rst 
vertebral in advance of the rst costal as in B. hatcheri described by 
Hay. Also, between the rst, 2nd and 3rd costal shields and the 
marginal ones occur other additional shields (supramarginals), 
narrow in comparison with their length, one between the outer 
ends of the rst and 2nd shields, a second in a corresponding posi- 
tion between the 2nd and 3rd. The rst, 2ndand 3rd costal shields 
instead of being square at their distal ends come to a point. The 
position of the accessory shields finds corroboration in the second 
carapace already mentioned. The margin of the carapace in front 
is indented at regular intervals, viz. where the sulci marking the 
boundaries of the marginal shields pass over the peripheral border. 
The marginal shields as seen from above are long and narrow. 
The proportions of the 4th vertebral and 3rd costal shields, as in- 
dicated in the figure by broken heavy lines, are taken from the 
second carapace in which also another supramarginal shield is 
partly shewn between the distal ends of the 3rd and 4th costal 
shields. 
The plastron is longer than broad. The anterior lobe is 
shorter than the posterior one and is narrower, especially at its 
front termination. Its margin is sinuous in front, indentations 
occurring where the sulci reach the border. Well developed 
mesoplastral bones are present, meeting in the median line where 
they are narrow. The entoplastral is diamond shaped, and is 
nearly twice as long as broad. 
There is a small divided intergular shield in advance of com- 
paratively large gular ones, the intergular sulcus crossing the 
