THE GALAPAGOS TORTOISES. 283 
distinct striae. From the fourth vertebral to the caudal there is a moderately 
sharp descent but the first of these scales has not a marked boss. The lines of 
junction between marginals and costals are moderately straight. The caudal 
does not extend as far backward as the marginal at either side of it, but curves 
downward somewhat lower. 
The sternum is broad; the abdominals make a long bend from their lowest 
portion to meet the marginals. The anals form a shallower notch than that of 
T. vicina; their hinder angles are more rounded off. The sternal concavity 
is shallow, not yet reaching the depth of half an inch in the hind parts of the 
abdominals. A deep groove near the edges of the scutes (stria of growth) 
shows that the abdominals have made a greater enlargement than the other 
scales (Plate 19, fig. 3). 
MEASUREMENTS. 
(In inches). 
Straight Straight Curved Curved Sternal Sternal 
length width length width length width Height 
T. elephantopus' 31 26 BYE 40 244 23 
T. microphyes + 221 153 26 29 18 14 10 
T. chathamensis ” 351 244 394 38 261 14 
T. chathamensis* 224 17 281 26 181 113 
M.C. Z. 11065 3732 302 434 50 284 274 173 
11066 313 241 364 40 234 22, 14 
11067 253 195 295 323 1G )Fr 163 11; 
11071 233 We 283 31; 183 16% 113 
11085 42 dl 503 303 28% 17 
11086 Alt 325 ol 554 
4476 153 127 193 15 123 ( 
4479 153 113 197 193 123 103 73 
TESTUDO CLIVOSA, Sp. nov. 
Plate 21. 
This tortoise (Type M. C. Z. 11075) is described from a bony carapace 
and plastron on which there are seven or eight entire scutes in place. Of its 
history nothing definite is known. It was supposed to have come from the 
Mascarenes. Possibly a name and date, “‘Narraga 1861,” may yet help to 
1 Giinther, Philos. trans., 1875, 165. 
2 Van Denburgh, Proc. Cal. acad. sci., 19C7, 1. 
