TESTUDO VICINA. 
75 
and ridges less developed ; otherwise they are formed according to the same type, and 
the first, seventh, and eighth are the only vertebras which exhibit peculiarities indi- 
cative of specific distinctness. In the atlas (Plate XL VI. fig. B) the lateral portion of 
the neural arch is but little constricted, at least as wide as the broad zygapophysis, 
which is longer than that part of the bone which forms the roof of the neural arch. In 
the seventh vertebra (Plate XLVII. fig. C) the summit (a) of the neural crest is not 
single, as in the other species, but split into two prominences, separated from each 
other by a deep notch. In the eighth vertebra the haemal crest is produced forward to the 
level of the anterior articular surface, and almost hamate in form, whilst it does not 
extend beyond the middle third of the length of the centrum in T. elephantojjus. 
Measurements of cervical vertebrae : — 
2nd. 
3rd. 
4tli. 
5tli. 
Gth. 
7th. 
millim. 
millim. 
millim. 
millim. 
millim. 
miUim, 
47 
65 
88 
80 
82 
72 
34 
26 
25 
26 
25 
49 
14 
18 
17 
20 
25 
27 
15 
18 
20 
36 
42 
41 
25 
28 
39 
Width of posterior articular cavity 
19 
23 
50 
Distance of outer margins of anterior zygapopliyses . 
.. 20 
33 
38 
37 
42 
33 
Distance of outer margins of posterior zygapophyses. 
.. 28 
31 
31 
35 
28 
55 
Dorsal vertehrce. — The last of the three vertebrae which emit pleurapophyses to form 
the protuberance for the articulation of the ilium is the eleventh ; so that only eleven 
vertebrae can be assigned to this part of the vertebral column. Of the two heads into 
which the first rib bifurcates, the posterior is more slender than the anterior; the 
triangular space enclosed by them is wide, but less so than in T. eleiphanto^us. For 
comparison with the latter species I give the length of the centra of the several dorsal 
vertebrae : — ■ 
Dorsal vertcbraj 1st. 2nd. 3rd. 4th. 5th. 6th. 7th. 8th. 9th. 10th. 11th. 12th. 
mm. mm. mm. mm. mm. mm. mm. mm. mm. mm. mm. mm. 
Test, elephantopus G5 80 80 80 78 55 48 48 16 14 16 22 
Test, vicina 56 80 87 87 79 Gl 43 32 17 15 18 (21) 
Caudal vertebra? twenty in number; but it is possible that the last rudimentary ossicle 
has been lost. 
Limb-bones.— Smgularly enough, the resemblance which we notice between the skulls 
of this species and T. ephippium does not uniformly extend to the other parts of the 
skeleton, the limb-bones of T. vicina being much shorter and stouter than in that 
species, approaching more T. elephantopus. The scapulary (Plate LIV. figs. C, C) 
especially is stout and massive. The angle at which the scapula and acromium meet 
T 
