348 



RHINOCEROS. 



observations to their differences as compared with the 

 recent Rhinoceros indicus (p. 84), or to their want of suffi- 

 ciently distinguishing characters (p. 76). 



Dr. Buckland possesses some very fine and perfect speci- 

 mens of the humerus of the Rhinoceros tichorhinus, from 

 Lawford, of one of which Cuvier has given figures in pi. 

 xv. figs. 5 and 6, of the volume above cited. The humerus 

 is remarkable in the Rhinoceros, and especially in the great 

 extinct tichorhine species, for its strength and the enormous 

 thickness of the upper end ; in one of the Lawford speci- 

 mens the circumference at that end is two feet, the entire 

 length of the bone being one foot, seven inches. The great 

 tuberosity is developed into a strong curved plate, which 

 bends over the broad and deep bicipital groove : the 

 deltoid crest, continued downwards from the tuberosity 

 also manifests prodigious strength. Cuvier remarks that 

 the trochlear articular surface for the radius is more 

 oblique, and its lower crest longer, in the fossil, than in the 

 recent Rhinoceros of India. 



I subjoin two views 

 of an ungual phalanx of 

 a Rhinoceros (fig. 129), 

 which was obtained from 

 the brick marl, at Gray's 

 Thurrock, Essex ; an op- 

 portunity of examining 

 this fossil, and of giving 

 these illustrations, having 

 been kindly afforded me 

 by Mrs. Mills, of Lexden 

 Park, near Colchester. 

 The upper figure shows the rough anterior surface of the 

 bone, sculptured by the canals for the blood-vessels, sup- 



Fig. 129. 



