136 DR. J. E. GRAY ON THE MUSTELIDE. [Jan. 24, 
acute. In the very young animal they are very acute and strongly 
curved at the tip, so as to be almost subspiral. The hinder claws are 
small and acute, rudimentary in the very young specimens. The 
muffle is bald: it forms a bald edge round the nostrils, which are 
only separated from each other by a rather narrow septum ; and 
it forms a rather triangular bald space over them, the upper edge 
being sloping on each side, and rather arched in the centre. The 
figures in Capt. Cook’s ‘ Voyages,’ t. 57, give the best idea of this 
animal, showing the fin-like form of the hind feet; but the tail 
appears too depressed and Beaver-like. 
Enuypris Lurris. Kalan, or Sea-Otter. (Pl. VII.) B.M. 
Black, grizzled with silver-white hair. 
Var. Head white or grey. 
Lutra marina, Steller, Nov. Com. Petrop. ii. 367, t. 16, 1751 ; 
Schreb. Singeth. t. 128; Blainv. Ost¢éogr. Mustela, t. 8 (skull). 
Mustela lutris, Liun. ; Shaw, Mus. Lev. t. 
Phoca lutris, Pallas, Zoogr. R.-Asiat. 1. 100. 
Lutra lutris, F. Cuv. Supp. Buffon, Mamm. p. 204. 
Sea-Otter, Cook’s Voy. ii.645; Menzies, Phil. 'Trans. 1796, p. 385; 
Rich. North. Zool. 59. 
Enhydra marina, Flem. Phil. Journ. ii. 187, 1821 ; Owen, Odont. 
t. 128. f. 13; Martin, P. Z.S. iv. 59, 1836, Osteology ; Baird, 
M. N. A. 189. 
Enhydris lutris, Gray, Cat. Mamm. B. M. 72. 
Ei. stelleri, Lesson, Man. 156; Fischer, Syn. 229. 
E.? gracilis, Fischer, Syn. Mamm. 229. 
EF. marina, Hempr. Licht. Darst. Saugeth. t. 19; Eversmann, 
Reise um die Erde, t. 11, 12; Schrenck, Amurland, 43. 
Latar marina, Lesson, N. Tab. R. A. 171. 
Sea-Otter, Penn. Quad. ii. 
Hab. California. 
What is Lutra lutris, Geoffroy, F. Cuvier, Dict. Sci. Nat. (xxviil. 
247, t. ), Lutra marina, Desm. Mamm. 189, Schreb. Saugeth. 
(t. 129), with the feet one-third of the length of the body, from 
Kamtschatka? Is it a badly described Enhydris? 
Section II, Pxiatrypopa. 
Feet elongate; toes straight ; claws exserted, blunt. 
The flesh-tooth of this group is peculiar. In some genera it is 
of the usual normal shape, with a small internal lobe crowned with 
a single conical tubercle, as in Mephitis, Zorilla, and Mellivora; in 
Conepatus the inner lobe is broader, and has an elongated arched 
ridge on its inner edge. In some other genera, where the inner lobe 
is broad, it is crowned with two tubercles; they are distinct and 
well developed in Taxidea and Helictis, confluent, forming an ob- 
lique ridge, in Mydaus, and rudimentary and marginal in Arctonyz. 
