one-horned Rhinoceros. 117 



tubercles of the ribs facets almost vertical; those of thtj 

 loins are a little longer. 



The five spinal apophvses of the os sacrum coalesce 

 into one ridge. The first six vertebroe of the tail have an an- 

 nular part, and spinal and transverse apophyses; the other 

 sixteen are merely pyramidal, and go on decreasing \\x 

 size ^ • 



4th, The Bibs. 



There are nineteen pairs, several of which are real ; those 

 of the first pair are united together at the bottom. The 

 sternum is composed of four bones ; the first is compressed 

 into the form of a plough- share, and makes a pointed pro- 

 jection before the first rib. 



5th, The Anterior Extremity. 



The omoplate is oblong; its greatest breadth Is at its 

 upper quarter; its posterior edge is raised up, and in that 

 place thickened. The ridge has a very prominent apophysis, 

 at the uppt:r third turned a little backwards; it terminates at 

 the lower quarter of the omoplate, consequently there is no 

 acromion : a tuberosity supplies the place of the coracoid 

 beak ; the glenoid cavity is almost round. 



This form of the omoplate of the rhinoceros will always 

 distinguish it from those of other large quadrupeds; — that of 

 the elephant, for example, is a triangle almost equilateral, 

 and the spine has a large recurrent apophysis. 



The humerus is very remarkable, as its thick tuberosity is a 

 broad ridge, which proceeds from l)eibre backwards, and as the 

 linea aspera, which is thereby triangular, instead of being 

 linear, terminates at the bottom by a very prominent hook. 

 'I'iie anterior extremity of the thick tuberosity forms a hook 

 forwards; the small produces a suneral one, and between 

 both is a large canal, destined, no doubt, for the passage of 

 the biceps tendon. All these chaiacters will still form a 

 very good distinction between tlie humerus of' the rhinoce- 

 ros and that of every other quadruped of its size. The ex- 

 terior condvle is not very prominent; the other is not pro- 

 minent at all; the lower articulation is a simple pulley half 

 hollow. 



The radius at the top occupies the whole fore part of the 

 lore arm; its head has the form of a simple prominent 



* Length from the t xtrcmitv of the upper jaw 



to tlif root, ot" the tail - - 29 



Lerii^ili tV'/in the cervicpl part of the spine - o-i; 



Ltnj; h from the dorsal part - - 0-3 



Lciij^tJ) from tht lumbar part - 0*2 



LciiLith from the sacriil pnrt . - - o'z 



Lcrij^ili fro:iuhc coccvtii^in - - 0*7 



H 3 pulley J 



