MTJSTELIM!. 183 



St. Gerand-le-Puy, which he refers to the same species ; 

 he mentions that he was unable to find the present speci- 

 men, which was not labelled at the time of his visit to the 

 British Museum. The specimen figured by Filhol appears 

 very similar to the present specimen, but the blade of the 

 carnassial is slightly longer. 



Croizet Collection. Purchased, 1848. 



Mustela?, sp. 



Hal). France. 



M. 1366. The greater part of the palatal portion of the cranium, 

 showing the canine and all the cheek-teeth; from the 

 Upper Eocene of Caylux (Tarn-et-Garonne), Prance. This 

 specimen is rather larger than the cranium of M. angus- 

 tifrons, from which it is also distinguished by a great 

 difference in the form of m. 1. Purchased, 1884. 



M. 1375. The right ramus of the mandible, showing ^73 and 

 the alveoli of all the other teeth j from the Upper Eocene 

 of Caylux. It is not improbable that this specimen may 

 belong to the same species as the last. Purchased, 1884. 



Mustela, sp. 



18232-4. The third lower premolar and the carnassial of a small 

 specise ; from the Pleistocene of Suffolk. The carnassial 

 is intermediate between that of M. ermineus and M. 

 vulgaris. Green Collection. Purchased, 1843. 



Genus PLESICTIS, Pomel \ 



Dentition : I. |, C. ^ Pm. |, M. \. This genus is distinguished 

 from Mustela by the circumstance that the temporal ridges of the 

 cranium do not unite to form a sagittal crest. The lower carnassial 

 is always furnished with a well-developed inner cusp, and the upper 

 true molar is distinguished from that of existing species of Mustela 

 by its triangular form, but is very similar to that of M. angustifrons. 

 In the above-mentioned general characters the genus indicates 

 viverrine tendencies, and the transition to the extinct genus Steno- 

 plesictis (page 96) is so gradual that the viverrine and musteline 

 families are practically united by the two genera. 



1 Bull. Soc. Geol. France, ser. 2, vol. iv. p. 379 (1846). 



