DESCRIPTION OF PLATES. Ill 



Plate LXXXV. 



Figs. 1, 1 a, 1 b, 1 c, and 1 d. — Equus Sivalensis. ^Entire femur, 

 with both articulating extremities. — B.M. 



Extreme length, 15 - 6 in. Transverse diameter of upper extremity, including 

 trochlea, 4"6in. Antero-posterior diameter of posterior segment of great trochlea, 

 1*9 in. Transverse diameter of articular surface, 2 - 5 in. Antero-posterior dia- 

 meter of articular svLrface, 2-1 in. Smallest transverse diameter of shaft, 1*8 in. 

 Smallest antero-posterior diameter of shaft, l - 9 in. Transverse diameter of lower 

 extremity, 3 - 6in. Antero-posterior diameter externally, 3 - 6 in. Height of rotular 

 surface in centre, 2'4 in. Height of external condyle above neck of femur, 1*8 in. 



Figs. 2, 2 a, and 2 b. — Equus Sivalensis. Upper end of shaft of 

 femur, with upper articular extremity. 



Length of fragment, 6 - 8 in. Breadth of upper extremity, 4*3 in. Transverse 

 diameter of articular surface, 2'2 in. Antero-posterior diameter of ditto, 1*9 in. 



Figs. 3, 3 a, 3 b, and 3 c. — Equus Sivalensis. — Entire tibia. — B.M. 



Extreme length, 14 - 5 in. Transverse diameter of upper extremity, 3 -5 in. 

 Transverse diameter of shaft (smallest), 1-7 in. Antero-posterior diameter of shaft 

 (smallest), 1-2 in. Transverse diameter of lower extremity, 3 - in. Length of 

 ridge dividing articular fossa;, 2 - 4 in. 



Fig. 4. — Lower end of tibia and astragahis of Equus in situ, resto- 

 ration. 



Figs. 5, 5 a, and o b. — Calcaneum of Equus Sivalensis. — B.M. 

 Length, 5'8in. Projection of heel, 32 in. Greatest breadth, 2"1 in. Greatest 

 height, 1-9 in. 



Figs. 6, 6 a, and 6 b. — Astragalus of Equus Sivalensis.— B.M. 



Length (greatest), 2-5 in. Height (greatest), l - 9in. Breadth of scaphoid 

 surface, 2 - l in. Breadth of trochlea (tibial surface), l - 7 in. Antero-posterior 

 diameter of trochlea in centre, 1*4 in. 



Figs. 7, 7 a, 7 b, and 7 c. — Metatarsal bone of Equus Sivalensis. 



Extreme length, 11 o in. Antero-posterior diam. of shaft in centre, l - 2 in. Trans- 

 verse of shaft ditto, l - 3in. Transverse of upper extremity, 2 - in. Antero-pos- 

 terior of ditto, l - 7in. Transverse of lower articular surface, l - 8in. Greatest 

 antero-posterior of lower articular surface (in centre), l - 5 in. 



Figs. 8, 8 a, 8 b, and 8 c. — First phalangeal bone posterior extremity 

 of Equus Sivalensis. — B.M. 



Length superiorly, 31 in. Transverse diam. of posterior extremity, 2 - l in. 

 Vertical of ditto, 1"3 in. Transverse of anterior articular surface, 1*5 in. Vertical 

 of ditto, - 9 in. 



Figs. 9, 9 a, and 9 b. — Hippotherium Antilopinum. Fragment of 

 shaft of tibia with lower articulating extremity. — B.M. 



Length, 5" in. Breadth of inferior articular surface, 2-4 in. Length of ridgo 

 dividing articular fossae, 1 '8 in. 



Figs. 10, 10 o, and 10 b. — Astragalus of Hipjiotherium Antilopinum. 

 —B.M. 



Length, 2 - in. Breadth of scaphoid surface, 1*6 in. Breadth of tibial surface, 

 1-3 in. Length of tibia (in centre), 1"2 in. 



. 11, 11 a, and 11 b. — Tarsus, metatarsus, and phalanx of Hippo- 

 \m Antilopinum. — B.M. 



Length of whole figure, ] 5*3 in. 

 h 2 



