10 Mam, Classification. 



Cervidae are deciduous, and witli but a single exception, that 

 of Kangifer (Reindeer) are possessed only by males. The 

 boms of the Camelopardidae, on tbe contrary, are permanent, 

 and covered witb a bairy skin. 



Tbe Cavicornua (cavus, bollow), tbe last Group of tbis Sub- 

 order, is 



synonymous witb tbe Family 

 of tbe BovidcB. In these animals tbe prominences of tbe 

 frontal bones are covered eacb witb an elastic sbeatb, or 

 bollow born, formed as it were of agglutinated bair, wbicb 

 continues to increase by layers during life. Tbe prominence 

 wbicb tbe born envelopes grows witb it during life, and is 

 not deciduous. 



TVe propose now to consider tbat group of animals wbicb, 

 as being devoid of bind limbs, possessed of pectoral limbs 

 only in tbe form of fins, and having tbe posterior part of tbe 

 body flattened out into a horizontal* caudal fin, were termed 

 by Cuvier 



Mammalia MUTILATA. 



This Sub-class (of Cuvier) contained one Order termed 

 Cetacea, and tbis again two Genera; 1. The C. Herbivora, 

 represented by tbe Dugong and cogeners, 2. The C. Ordi- 

 naria, or Blowers, represented by the Whale, &c. Modern 

 classification has elevated these two genera each to rank as 

 an Order. Some Zoologists have retained the name *' Cetacea" 

 for one of these Orders, using it to denote the C. Ordinaria 

 alone, thereby introducing confusion. To avoid tbis, the term 

 Cete has been here used instead, to designate tbe Order 

 synonymous with Cuvier's C. Ordinaria. The term Sirenia 

 has been adopted as tbe " Order "-name, synonymous witb 

 Cuvier's genus C. Herbivora. 



* Fish hare the tail fin vertical. 



