58 FAUNA ANTIQUA SIVALENSIS. 
23 b.—Elephas Indicus (Mukna var. ). 
23 c.—Elephas Indicus (young). 
24.—Elephas primigenius (Fischer’s drawing). 
PuaTeE XLVI! 
Figs. 1 to 11.—Atlases of Proboscidea. 
Figs. 1, 1 a, and 1 6. 
Between extreme points of transverse processes, 16°7 in. Between extreme 
points of anterior articular surfaces, 8°5 in. Height, 9°3 in. Length of inferior 
arch, under surface, 2°8 in. 
Figs 2, 2 a, and 2 b. 
Between extreme point of anterior articular surfaces, 8°6 in. Height, 8-7 in. 
Length of inferior arch (inferiorly), 2°7 in. Height of orifice, 4°3 in. Breadth 
of spinal canal, 3:2 in. Narrowest part, 21 in. Breadth of fossa for odontoid 
process, 2°5 in. 
Figs. 3, 3 a, and 3 5. 
Between extreme points of anterior articular surfaces, 9°0 in. Height, 8:1in. 
Height of orifice, 3°8 in. Breadth of odontoid fossa, 2°5 in. Breadth of spinal 
canal, 3°8 in. 
Figs. 4, 4 a, and 4 b. 
Between extreme points of transverse processes, 14°8 in. Between extreme 
points of anterior articular surfaces, 7°5 in. Height, 7-7 in. Length of inferior 
arch (below) antero-posterior, 2°5 in. Great diameter of vertebral foramen, 1°2 in, 
Length of superior arch (antero-posterior), 32 in. 
Fig. 5. 
Height, 7°7 in. 
Fig. 6. 
Between extreme points of anterior articular surfaces, 7°8 in. Height, 6°6 in. 
Figs. 7, 7 a, and 7 0. 
Between extreme points of transverse processes, 14°7 in. Between extreme 
points of anterior articular surfaces, 8°7 in. Height, 7-6 in. Antero-posterior 
of lower arch (inferiorly), 2°6 in. 
Fig. 8. 
Between extreme points of transverse processes, 17:4 in. Height, 8°6 in, 
Comparison between Mukna and Dauntela—continued. 
Mukna (big head). Dauntela. 
4 ’ Inches Inches 
Length of anterior tooth, lower jaw . ; O°. anpeeeee 
Width ditto ditto => 387 yf Sopeates 
Length of lower jaw from tip to posterior edge at 
middle of height ‘ : : é 22°5 25° 
Height of jaw to alveolus. : ; é 65 6:5 
Thickness of jaw (diam.) 4 5 j 637 6° 
Height of condyles : ; g . : ; 20° : 18: 
Height to coronoids. : 5 : : : 15°5 . 12°5 
Antero-posterior diameter lea : : ‘ : 13°5 ; 10°26 
Interval between condyles, inside : : 5 14: . 14: 
Ditto ditto outside : 4 ; 5 21:5 
The plates of teeth in the Mukna | the British Museum, except where the 
variety slope greatly backwards and are | contrary is stated. Except in a few in- 
excessively and finely crimped ; those of | stances, no attempt was made by Dr. F. to 
Dauntela are much less crimped. determine the species of Proboscidean to 
‘The specimens figured in Plates | which the bone belonged. 
xlyi. to lyi. inclusive, are mostly in 
