569 



3414. The skull of a foetal Hippopotamus amphibius. 



The germs and formative alveoli of two incisors only exist in each premaxillary bone : the 

 germ of the decwkious canine is more advanced : the germs and alveoli of three deciduous 

 molars (p \, dl, and d 3) have been established. In the lower jaw the germs of the two 

 mid-incisors and of the canines have begun to be calcined : the formative alveoli of the lateral 

 incisors do not contain any calcified germs. The length of this skull is five inches. 



Presented by William Clift, Esq., F.R.S. 



3415. The anterior portion of the upper jaw of a young Hippopotamus, with the 

 incisors. Hunterian. 



3416. A right upper incisor of a Hippopotamus. Mus. Brit. 



3417. A right upper incisor of a Hippopotamus. Hunterian. 



3418. A left upper incisor of a Hippopotamus. Hunterian. 



3419. The anterior portion of the lower jaw of a Hippopotamus, with the incisors. 



Hunterian. 



3420. An incisor from the lower jaw of a Hippopotamus. Hunterian. 



3421. An incisor from the lower jaw of a Hippopotamus. 



Presented by Sir J. Banks, Bart., P.E.S. 



3422. The corresponding incisor of a Hippopotamus. 



Presented by Sir J. Banks, Bart., P.B.S. 



3423. An incisor from the lower jaw of a Hippopotamus. Hunterian. 



3424. An incisor from the lower jaw of a Hippopotamus. Hunterian. 



3425. A large incisor from the lower jaw of a Hippopotamus. Hunterian. 



I 



3426. An incisor from the lower jaw of a Hippopotamus. 



Presented by Mr. Grevitte. 

 4 D 



