OMMATOPHOCA — MONACHUS. 205 



Cranium much injured. Hard palate, length 3^ 

 inches ; greatest breadth, behind last post-canine, 2| 

 inches. Mandible, length 6| inches. 



Donor — Dr W. S. Bruce. 



IV. MONACHUS. (Mon.) 



Phoca monachus, Hermann, Abth. Akad. Wiss. Berlin, 1779. 

 Monachus, Fleming, Philosophi/ of Zoology, 1822. 

 Pelagius monachus, F. Cuvier, Diet. Sci. Nat, 1829. 



Anterior nares oblique. Hard palate slightly emar- 



ginate, posterior border behind maxillary root of 



zygomata and in front of glenoid fossa. Tympanic 



bulla swollen, scarcely ridged, apex truncated ; 



basi-occipital perforated mesially, occipital condyls 



2 2 11 5 5 



confluent. Dentition : in. „ o' c. t- t, p c. - — == 32. 



Z 1 11 .5 5 



Crowns of post-canines strong, conical, compressed, 



with faint accessory cusps. Vertebral formula 



C^DjgLgSoCd^^ = 40. Nails of manus and pes small 



and rudimentary. 



(1) Monachus albiventer. (Mon. al.) 



(Monk Seal, Mediterranean.) 

 (The only species.) 



No specimen in Museum. 



