SEALS. 219 
it comes in this respect intermediate between that species and Ross’ 
Seal. Moseley described the specimen which he killed at Kerguelen 
Island as “very like the common British seal in appearance. It is 
spotted yellowish-white and dark grey on the back, the tender. surface 
being of a general yellowish colour.” Monsieur Racovitza charac- 
terises it as possessing “a pélage gris-fer moucheté de taches rondes 
de couleur jaune.” 
In build this seal is, judging by the photographs of Dr. Cook and 
Monsieur Racovitza, more slender than Zobodon. Monsieur Racovitza 
states that it is larger than the latter species. In that case the head 
should be proportionately smaller. It is relatively longer, more 
slender, and lacks the bluntness of Lobodon. 
Mstinguishing Characteristics —Both the skull and skeleton of 
Weddell’s Sea Leopard have been described in detail by Sir William 
Turner, at pages 20 to 28 of his report on the seals collected by the 
Challenger expedition. The skull has neither great size nor remark- 
able teeth to mark it off at a glance from the remaining seals of the 
Antarctic seas. Yet Zobodon, which is of very similar size, is the 
only form with which it could possibly be confused. Even here, 
however, there are several obvious points of difference, and Leptony- 
chotes (apart from its simple teeth) may be at once distinguished by 
the proportionately greater breadth of its brain-case and the high 
narrow anterior portion of the skull, as well as by the shorter palate. 
The under jaws of the two animals are also characteristic, that of 
Lobodon being far deeper, stronger and more massive than that of 
Leptonychotes. 
OGMORHINUS. 
External Appearance.—The true Sea Leopard justly derives its 
name, since it bears more spots upon its body than any other species. 
In the single specimen brought home by the Southern Cross the spots 
extend all over the body, and Monsieur Racovitza says that the colour 
of the coat is “ eris foncé, moucheté de taches jaunes.” 
The animal is, however, readily distinguishable by the great size 
of its elongated body. The longest measured by Mr. Bruce attained 
to a length of over thirteen feet, and the species gained the name of 
“serpent” from the sailors. 
As regards the sexes, Mr. Bruce makes the interesting and unex- 
pected statement that “Dr. Donald also noted that the females of the 
larger species were larger than the males”—a statement to which 
I would draw the attention of future explorers as well worthy of 
confirmation. 
