DE. J. MUKIE ON THE ANATOMY OF THE SEA-LION. 573 



tunica msculosa. The glandular lobes of the tubuli seminiferi are small and very 

 numerous, the corpus Highmorianum being centrally well pronounced. The epididymis 

 is nearly of uniform breadth, the globus major having no very marked obtuse head. 

 Structurally to the eye it has a glandular-looking aspect, with irregular transverse, 

 white, glistening septa. 



DESCRIPTION OF THE PLATES. 



PLATE LXXV. 



Fig. 1. Upper view of the skull of the Society's male specimen of Otaria jubata. 

 Fig. 2. Basis of the same skull, viewed from below. 

 Fig. 3. Front and foreshortened aspect of same, with mandible. 



Fig. 4. Occipital view of the skull, minus the inferior maxilla. Objects here given all 

 about § nat. size, and from photographs. 



PLATE LXXVI. 



Fig. 5. Profile view of the same male Otary's cranium, with mandible. 



Fig. 6. Portion of its inferior basis cranii, slightly tilted inwards to show certain rela- 

 tions of alisphenoid canal &c. 



Fig. 7. Upper view of the inferior maxillae. 



Fig. 8. The angle and articular condyle of the left mandible, seen from below. 



Fig. 9. The internal basis of the same skull, opened by a horizontal section made from 

 the squamo-frontal process to the upper ends of the occipital condyles, and 

 vertically cut by an incision 03 inch behind the former point. 



Fig. 10. The interior surface of the removed calvarium. Figures each reduced, about 

 two thirds natural size. 

 In this and the preceding Plate the same lettering is used throughout. 



Bones. 



Pmx. Premaxilla. 



Mx. Superior maxilla. 



Na. Nasal. 



Fr, Fr*. Pre- and postfrontal. 



Pa. Parietal. 



Sq. Squamosal. 



Ju. Jugal or malar. 



PI. Palatine. 

 Pt. Pterygoid. 

 Vo. Vomer. 

 vol. vnr. — part ix. June, 1874. 4 k 



So. Supraoccipital. 

 Eo. Exoccipital. 

 Bo. Basioccipital. 

 Bs. Basisphenoid. 

 Ps. Presphenoid. 

 As. Alisphenoid. 

 Ty. Tympanic. 

 Ma. Mastoid. 

 Mn. Mandible. 



