128 DR. J. E. GRAY ON THE MUSTELIDZ. [Jan. 24, 
** America. 
6. LuTRA MACRODUS. B.M. 
Dark brown; upper lip, chin, and beneath paler. Fur rather 
harsh. Upper edge of the bald muzzle straight, transverse ; the flesh- 
tooth with a very large internal lobe, as long as the tooth. Claws 
large, acute. 
Hab. Brazil (Parzudaki). Male and female. 
This Otter is about the size of Lontra brasiliensis; but it is at once 
distinguished from that species by the large size of the naked muzzle 
and the harshness of the fur. It is very like L. vulgaris; but the 
inner lobe of the flesh-tooth appears considerably larger; and M. 
Parzudaki assured me that he had received the pair direct from the 
Brazils, from a collector who shot them. 
12. Nurria. 
Like Lutra externally, with the bald muffle transverse, narrowed, 
and arched below. Skull short, broad. Nose broad. Forehead 
flat; the orbit defined behind by a well-marked conical tubercle 
above and below. The flesh-tooth with a very large internal lobe, 
extending the whole length of the tooth. Hinder portion of the 
palate short. 
This genus is at once known from the Otter with the large internal 
lobes to the flesh-tooth, by the shortness and breadth of the skull 
and the shortness of the hinder contracted portion of the palate. 
NUuTRIA FELINA. B.M. 
Fur dark brown, with scattered, flat, whitish-tipped hairs. Lips, 
sides, and beneath pale brown. The web of toes scattered with 
hairs above. 
Iutra felina, Molina, Hist. Nat. Chili, plate 2 (skull) ; Shaw, Zool. 
i. 441; Gerrard, Cat. Bones B. M. 101. 
L. chilensis, Benn. P. Z. Comm. Sci. ii. 1832; Gerrard, Cat. 
Bones B. M. 101; Tschudi, Fauna Peruana, 120. B.M. 
Chinchimen, Molina, 261. 
Lutra californica, Gray, Mag. N. H. i. 580, 1837; List Mamm. 
B. M. 71; Baird, Mamm. N. A. 187? B. M., type. 
L. platensis, Waterh. Zool. Beag. he ae (skull) ; D'Orb. 
Voy. A. Mérid. t. 12. f. 23; Gerrard, Cat. Bones, B. M.; Verreaux, 
(skull). B.M. 
Hab. In the sea, Chili (Bennett); Peru, island of Chiloe 
(Tschudi) ; California (P. P. King); Kamschatka (Verreauz). 
Mr. Tomes observes, ‘‘ The Otter collected in Guatemala by Mr. 
Salvin agrees with the description and figure of L. chilensis (Waterh.), 
especially in the inner lobe of the flesh-tooth having the same angular 
form as in that species. In L. platensis the inner lobe of the flesh- 
tooth approaches more or less to a semicircular form. Dr. Baird 
figures the flesh-tooth of Z. canadensis as in L. platensis”’ (P. Z. 8. 
1861, p. 280). 
