697 



4412. The skull of a common Spaniel (Canis familiaris, var. Hispanicus). 



It differs from the preceding chiefly by its smaller size, and the jaws being relatively some- 

 what narrower. 



Purchased. 



4413. The skull, vertically and longitudinally bisected, of a similarly-sized Spaniel. 



The cerebral cavity is almost absolutely as large as that of No. 4398, but the epence- 

 phalic and rhinencephalic compartments are shorter, the frontal sinuses are less developed, 



and the olfactory chamber is much shorter. 



Purchased. 



4414. The skull, with the left ramus of the lower jaw and the os penis, of a Spaniel 

 (Canis familiaris, var. Hispanicus). Presented by William Clift, Esq., F.R.S. 



4415. The cranium of a Blenheim Spaniel (Cants familiaris, var. Hispanicus minor). 



It differs from the preceding specimen in the greater relative expanse of the cerebral cavity, 

 the much shorter jaws, the sudden elevation of the frontal region, the breadth of the smooth 

 tract between the temporal ridges, and the non-development of postorbital processes. The 

 interparietal extends along more than half of the sagittal suture, and terminates by a trun- 

 cated extremity. 



Purchased. 



4410. The skull of a King Charles' Spaniel (Canis familiaris, var. brevipilis). 



It resembles the preceding in all essential characters, but the frontal region is less 

 suddenly elevated and the zygomatic arches less expanded. The os penis of the same 

 animal is here preserved. * 



Presented by William Home Clift, Esq. 



4417. A skull of a young King Charles' Spaniel. 



It shows the deciduous dentition : there are seven milk incisors in the upper jaw, the right 

 premaxillary having four : the incisors are of the normal number in the lower jaw. The iu- 

 terparietal has entirely divided the parietals from each other, and the fontanelle is still open 

 between these and the frontal. 



Purchased. 



4418. The skull of the Pug-dog (Ccutu/amMarig, \vx.fricator). 



It is characterized by the depression between the short nasals, the sudden elevation of the 

 frontals, the great relative expanse of the cerebral cavity, the shortness of the jaws, and the 

 upward curve of the lower jaw ; but the sutures have the same characteristic disposition as in 

 the skull of the "Wild Dog (No. 4397) ; the difference in form in this and other small varie- 

 ties of the species depending chiefly on the retention of more or less of the immature charac- 

 ters, which are exemplified in the following specimen. 



Purchased. 



4 i 



