TESTUDO ELEPHANTOPUS. 
67 
Of the dorsal vertehrm scarcely more than the measurements need to be noticed ; these 
are of some importance in comparison with the corresponding vertebra? in other species 
and also with the cervical vertebrae. The two heads of the first rib are slender, much 
divergent, leaving a wide triangular space between them and the first dorsal vertebra. 
The iliac bones abut against the pleurapophyses of the 9th, 10th, 11th, and 12th ver- 
tebrae, counting from the first dorsal vertebra. Their distal extremities unite to form 
the protuberance for the articulation of the ilium. 
Length of centrum of dorsal vertebrae : — 
1st. 2nd. 3rd. 4th. 5tli. 6th. 7th. 8th. 9th. 10th. 11th. 12th. 
mm. mm. mm. mm. mm. mm. mm. mm. mm. mm. mm. mm. 
65 80 80 80 78 55 48 48 16 14 16 .2.2 
The number of caudal vertebras is twenty-three in two, and twenty-five in a third ; 
but in the latter specimen they are irregular, and asymmetrically confluent towards the 
end of the tail. 
Limh-hones. — In the scapulary (Plate LIII. figs. C, C) we notice the 
very obtuse angle at which the scapula and acromium meet. The body 
of the scapula proper is rather slender, compressed, trihedral in form, 
with its anterior side convex, as shown in the annexed figure, which 
represents a transverse section through its middle. The coracoid is not 
ankylosed to the scapula. The measurements of this bone are the fol- 
lowing : — 
millim. 
Length of scapula (measured from the suture witli tlie coracoid) 200 
Circumference in its middle . 75 
Longitudinal diameter of glenoid cavity 50 
Length of coracoid 86 
Greatest width of coracoid 70 
Length of acromium 84 
The shaft of the humerus (Plate LI. figs. A, A') is moderately slender, sub trihedral, 
with the edges well rounded ofi". There exists a deep impression on the outer side of 
the bone, immediately below the head and ulnar tuberosity («), and another transverse 
impression on the hinder side above the trochlea. The ulnar tuberosity projects high 
above the head, which is nearly entirely raised above the level of the summit of the 
radial tuberosity. The canal [h) for the blood-vessels on the radial edge of the bone, 
close to the elbow-joint, is perfectly closed, perforating the substance of the bone from 
the front to the hinder side. 
miUim. 
Length of the humerus, measured in a straight line from the summit of 
the head to the middle of the trochlea 216 
Circumference of the narrowest part of the shaft 89 
Longest diameter of the head 40 
Shortest diameter of the head 37 
Extreme breadth between tlic condyles 82 
K 2 
