544 



transverse process of the last cervical, being represented by the diapophysis only, is imper- 

 forate. The neurapophysis not only of the atlas and axis, but likewise of the other cervical 

 vertebrae, is perforated for the passage of one of the divisions of the corresponding spinal 

 nerve. The neural spine of the seventh cervical is suddenly increased in length, but is much 

 surpassed both in length and strength by that of the first dorsal, which equals the pleurapo- 

 physis of the same vertebra in length. The spines of the succeeding dorsals gradually de- 

 crease in length to the eleventh, beyond which those elements differ only in antero-posterior 

 extent. The metapophysis passes from the diapophysis to the zygapophysis in the eleventh 

 dorsal, and continues in that position throughout the lumbar series : there are no anapophyses : 

 the lumbar vertebrae show a slight hypapophysial ridge. The neurapophyses of most of the 



dorsal vertebree are directly perforated by the spinal nerves. 



Mm. Brookes. 

 i 

 3253. The skull of a German Wild Boar (Sus Scrofa), with the permanent dentition ; 



the occiput is mutilated, and the dental series incomplete. 



Presented by Henry Cline, Esq. 



3:254. The skull of a young Wild Boar (Sus Scrofa), wanting the last molar teeth. 



It is stated in the former edition of the ' Osteological Catalogue,' to be " from India ;" but 

 it has the concave contour of the cranium characteristic of the European variety, to which it 



more probably has belonged. 



Hunterian. 



3:255. The fore part of the cranium, including the incisors, canines, and first pre- 

 molars, of a Wild Boar. 



The shape and partial disposition of the enamel on the upper incisors or tusks are well seen 



in this specimen. 



Hunterian. 



The following specimens, to No. 3264 inclusive, are sections of the crania and lower jaws 

 of the Wild Boar, said to be from Germany, of different ages ; showing some of the phe- 

 nomena of the change and progress of dentition. 



Presented by Sir Everard Home, Bart., V.P.R.S. 



3256. A longitudinally bisected cranium of a young Wild Boar (Sus Scrofa). 



The crowns of the incipient canine and of the second true molar are exposed in their alveoli 

 of formation. The four deciduous molars and first true molar are in place. The premaxil- 

 laries and incisors are wanting. 



3257. The rami of the lower jaw of the same cranium. 



The four deciduous molars and the first true molar are preserved in the right ramus, the 

 last deciduous molar having the characteristic third lobe, and prefiguring the form of the last 



