ANATOMY OF THE CALIFORNIAN SEA-LION. 319 



Behind the shoulders, along the back and upper parts, the tips of the 



hairs get lighter brown ; and mixed with them are numerous entirely T. Z. S. 1882, 



pale-brown ones ; so that in these regions the general colour of the coat 



becomes much lighter, inclining to a mottled yellowish-brown tint. 



The sides of the neck are darker in colour than any other part of the 

 body, the hairs here being very deep black-brown, with very few pale ones 

 intermixed. These latter hairs increase in number towards the head, 

 whilst posteriorly the hairs get shorter, paler, and more tipped with 

 yellow, so that the dark colour of the neck passes gradually into the 

 greyer tint of the head and the browner hue of the back. 



On the flanks, belly, and lips the yellowish -brown hairs and tips 

 disappear, and the general colour in consequence becomes a dark rich 

 brown, with a vinous tinge in some lights, particularly observable on the 

 anterior parts of the pectoral limbs. The tail is rich brown in colour. 

 On the chest and between the pectoral limbs the hairs become much 

 shorter and yellowish-grey in colour ; but both the shortness of the hair 

 and the colour are, I believe, accidental, caused by the wearing-away of 

 the hairs here by the animal's position when in repose. 



The pectoral fins (PL XI. fig. 1) are above covered with closely 

 appressed, short hairs, which are black for the greater part of their length. 

 There are no light-tipped hairs at all on the "fin" below the humerus. 

 The thickened convex radial margin, from halfway down the first 

 metacarpal for a breadth of about an inch, as well as the ulnar side from 

 two inches above the last nail, are naked ; the line of hairs runs along 

 some little way proximad of the nails, leaving the rest of the " fin " naked. 

 Below, the flippers are quite naked from a transverse line extending 

 across a little proximad of the carpal joint ; the bare skin is marked by 

 numerous, subparallel, wrinkle-like lines. 



On the hind limbs (PI. XI. fig. 2) the hairs extend above along the 

 ridges of bone nearly to the nails ; the margins for some way, as well as 

 the skin between and below the nails, are naked. Beneath they are 

 naked from nearly the base of the free part. 



The accompanying Plate (IX.) represents to the right the male 

 specimen from the Southport Aquarium, from a drawing by Mr. Smit, 

 taken from the animal when thoroughly dried. The attitude and position, 

 however, are from a sketch made by him of the adult specimen of the 

 same species at the Brighton Aquarium, taken a few weeks before its 

 death. The figure to the left represents the female specimen at Brighton, 

 and is also taken from life ; it represents the animal, however, when wet. 

 The smaller size and different coloration of this sex are well shown in it, 

 as well as the difference in the contour of its head, due to the non- 

 development of the great sagittal crest, which is such a conspicuous 

 feature of the male. The small distant figure in the same Plate repre- 

 sents the male animal with its coat wet. On the second Plate (PI. X.) 



