1} i 
190 CARNIVORA. 
20 b (0. C.). The right ramus of the mandible, containing the car- 
nassial; from a cavern in Sundwig, Westphalia. 
Sémmering Collection. Purchased, 1827. 
16711. The left ramus of the mandible, containing all the teeth except 
(fig.) the incisors, pm. 1, and pm. 3; from Kent’s-Hole Cavern, 
Torquay. This specimen is figured by Owen in the 
‘British Fossil Mammals and Birds,’ p. 107, fig. 37. The 
teeth are in an unworn condition, and the alveolus of 
pm. 1 is of minute size. 
McEnery Collection. Purchased, 1842. 
M. 1884. The cranium and mandible; from a brick-field at Grove- 
hurst, Sittingbourne, Kent. The age of this specimen is 
doubtful. Presented by George Payne, Hsq., 1884. 
27659. The distal half of the left humerus (showing the entepi- 
-condylar foramen) and the proximal half of the left ulna ; 
from a cavern at Montpellier, France. 
Croizet Collection. Purchased, 1848. 
Genus LUTRA, Erxleben* (ew Ray). 
Including :—Aonyz, Lesson. 
Enhydriodon (Amyxodon), Falconer’. 
Lutrictis, Pomel’. 
Potamotherium, E. Geoffroy *. 
Stephanodon, H. von Meyer’. 
Dentition.—In the typical living forms the dental formula is 
iF 5 C. Pm. * M. 53 but in L. (A.) leptonya the first upper pre- 
molar is not unfrequently absent; and in some fossil forms this 
tooth is invariably wanting. In another fossil species m.2 is 
present ; so that the dental formula for all these variations must be 
written as follows, viz. L. a C. - Pm. ee" M. ae The reasons 
for including Enhydriodon in the present genus are given by the 
writer in the ‘ Palzontologia Indica,’ ser 10, vol. ii. pp. 195-201. 
1 Syst. Regn. Animal, p. 445 (1777). 
2 In ‘Falconer’s Paleontological Memoirs,’ vol. i. p. 331 (1868). The name 
Amyxodon dates from 1836, but was never defined. 
5 Bull. Soc. Géol. France, ser. 2, vol. iv. p. 380 (1846). 
+ Revue Encyclopédique, vol. lix. p. 88 (1833). 
5 Neues Jahrbuch, 1847, p. 182; and Suppl. Arch. Sci. Phys. Nat. vol. v. 
p- 307 (1847). 
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