58 



FAUNA ANTIQUA SIVALENSIS. 



23 b. — Eleplias Indicus (Mukna var.). 



23 c. — Eleplias Indicus (young). 



24. — Eleplias primigenixis (Fischer's drawing). 



Plate XL VI. 1 



Figs. 1 to 11. — Atlases of Proboscidea. 

 Figs. 1, 1 a, and 1 b. 



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, 2*1 in. Breadth of fossa for odontoid 

 process, 2 - 5 in. 



Figs. 3, 3 a, and 3 b. 



Between extreme points of anterior articidar surfaces, 9*0 in. Height, 8*1 in. 

 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 (helow) antero-posterior, 2-5 in. Great diameter of vertebral foramen, l - 2 in. 

 Length of superior arch (antero-posterior), 3*2 in.. 



Fig. 5. 

 Fig. 6. 



Height, 7'7in. 



Between extreme points of anterior articular surfaces, 7*8 in. 



Figs. 7, 7 a, and 7 b. 



Between extreme points of transverse processes, 14 - 7 in. 

 points of anterior articular surfaces, 8"7 in. Height, 7'6 in. 

 of lower arch (inferiorly), 2*6 in. 



Fig. 8. 



Height, 6-6 in. 



Between extreme 

 Antero-posterior 



Between extreme points of transverse processes, 17'4 in. Height, 8 - 6 in. 



Comparison between Mukna and Dauntela — continued. 



Dauntela. 

 Inches 



Length of anterior tooth, lower jaw 



Width ditto ditto 



Length of lower jaw from tip to posterior edge at 



middle of height 

 Height of jaw to alveolus 

 Thickness of jaw (diam.) 

 Height of condyles 

 Height to coronoids 

 Antero-posterior diameter leaf 

 Interval between condyles, inside 

 Ditto ditto outside 



Mukna (big head) 

 Inches 

 o. -> 

 „.o 7 }> dropped out 



22-5 

 65 

 6-37 

 20- 

 155 

 13-5 

 14- 



25- 

 6-5 

 6- 



18- 



12-5 



10-25 



14- 



21-5 



The plates of teeth in the Mukna 

 variety slope greatly backwards and are 

 excessively and finely crimped ; those of 

 Dauntela are much less crimped. 



1 The specimens figured in Plates 

 xlvi. to lvi. inclusive, are mostly in 



the British Museum, except where the 

 contrary is stated. Except in a few in- 

 stances, no attempt was made by Dr. F. to 

 determine the species of Proboscidean to 

 which the bone belonged. 



