ANATOMY OF THE CALIFORNIAN SEA-LION. 317 



Since the subject of the present paper passed through my hands Mr. T.Z.S. 1882, 

 Allen's elaborate ' History of North-American Pinnipeds ' (Washington, "' p * 

 1880) has been published, and our knowledge of Otaria yillespii much 

 increased thereby, Mr. Allen having been able to examine many skins and 

 skeletons of the species, as well as to give full details of its habits in a 

 state of nature. A good figure, however, of this species still remains a 

 desideratum. The drawings accompanying this paper having been made 

 from the fresh animal by Mr. Smit (under my own supervision), their 

 publication will, by filling up this blank, tend to still further complete 

 our knowledge of this animal. The detailed measurements and descrip- 

 tion of the adult male examined will also still further supplement 

 Mr. Allen's account, whilst the notes on the anatomy of the soft parts, 

 hitherto unknown in this species, will perhaps also be acceptable, as con- 

 firming, or adding to, our knowledge of these parts as described in Dr. 

 Murie's elaborate and exhaustive treatise on Otaria jubata*. 



The animal examined by me was a male, perhaps adult, but by no 

 means aged, as may be seen from the condition of its teeth and skull, 

 now preserved in the College of Surgeons. The Brighton animal, already 

 alluded to, was probably somewhat older, as I am informed by Prof. Flower. 



The following measurements were taken, by means of calipers, on the 

 unskinned animal : 



inches. 



Greatest length, from nose to end of hind limbs 92*0 



Length from nose to tip of tail 81'5 



From nose to prominence in shoulder-joint 23*5 



Length of head, to end of the sagittal crest 4 . 10*5 



Length of tail, from naked skin at base 4-4 



Tip from anus 5*4 



Length of pectoral limb, from shoulder-joint 30*0 



Breadth at axilla 6'25 



Length of pelvic limb, from the anterior extremity of ilium . . . 27'0 



Breadth of pelvic limb, at base 3*5 



Greatest breadth of pelvic limb, when the fin is expanded . . . 7-6 



Distance between anus and preputial orifice 8'5 



Length of ear 1-75 



eye 1-15 



Distance between eye and ear 3-25 



,, nose and eye 4*75 



from chin to angle of mouth 3-85 



Depth of muffle 1-25 



Breadth of ditto 1-25 



* " Researches on the Anatomy of the Pinnipedia. Descriptive Anatomy of the 

 Sea-lion (Of aria jubata);' Trans. Zool. Soo. vii. pp. 527-596; viii. pp. 501-582. 



