672 



4180. Two posterior lumbar vertebrae, the sacrum, and three anterior caudal 

 vertebrae. 



4181. The remaining caudal vertebrae. 



The hsemapophyses are preserved on five of the anterior ones. 



4182. The sternum and cartilages of the ribs. 



Ten pairs of ribs directly unite with the sternum, which consists of ten bones, with the 

 xiphoid cartilage. 



4183. The two scapulae. 



The bone is extremely thin, and is perforated at the corresponding parts of both upper and 

 lower costae in both specimens. 



4184. The two humeri. 



They are perforated between the condyles and above the inner condyle. 



4185. The bones of the fore leg and most of those of the fore foot. 



4186. The two ossa innominata. 



4187. The bones of the hinder extremity, naturally connected together. 



There are two fabellse behind the outer condyle, and a sesamoid behind the entocuneiform : 

 the inner digit and some of the phalanges are wanting in both feet. 



Genus Putorius. 

 Dental formula : i g, c T, pr 3 > S" 34 - 



4188. The natural skeleton of a male Ermine (Putorius ermineus). 



The vertebral formula is : 7 cervical, 14 dorsal, 6 lumbar, 2 sacral, 18 caudal. The spines 

 of the tenth and eleventh dorsal vertebrae converge towards each other and almost meet, in- 

 dicating the centre of motion of the trunk. Ten pairs of ribs directly join the sternum. The 



