10 MAMMALIA. 



species of Cants ; and, indeed, the shape of the tooth would be 

 remarkable in this genus. It seems highly probable that this 

 tooth will prove to be Cetacean ; but as I know of nothing 

 exactly of the same form, it is for the present left with doubt in 

 the genus Cards. 



Genus PTEEODON? Blainville. 

 PLATE I., FIG. 7, a, b. 



Prof. Owen (Quart. Journ. Geol. Soc., Vol. XII., p. 227, 

 Fig. 20, 1856) figured and described a tooth from the Red Crag 

 of Suffolk which he thought was allied to Hycenodon and Pterodon. 

 He says concerning this sectorial tooth that it " deviates from the 

 feline type and approaches that of the carnassial in the Glutton, 

 Hyaena, and Grison, but with a minor development of the 



outer cingulum it closely resembles one of the 



teeth of the Miocene carnivora to which the generic names 

 Hyamodon and Pterodon have been given." 



I have been unable to trace the specimen here referred to, but 

 provisionally retain the genus on Sir R. Owen's authority. 

 The tooth was most probably obtained from the Nodule-bed of 

 the Red Crag. 



Genus MD STELA, Linnaeus. 

 MUSTELA MARTES, LINNJET'S. 

 (=MARTES SYLVATICA, NILLSON.) 



(Pine Marten?) 

 (Vert. Forest Bed, p. 25. PLATE IV., FIG. 3, 3a.) 



The occurrence of the Marten in the Forest-bed at West 

 Runton was first noticed in 1880 (Geol. Mag., Dec. 2, Vol. VII., 

 p. 150) ; the specimen was figured in the Survey Memoir under the 

 name Maries sylvatica ; but I am not aware that it has been re- 

 corded from any other Pliocene deposit. The Marten is, however, 

 known to occur in Cave-deposits (Vide Boyd Dawkins, Quart. 

 Journ. Geol. Soc., Vol. XXV, p. 192, 1869, and Vol. XXXVI., 

 p. 400, 1880). 



With regard to the name which should be adopted for this 

 species ; if the two genera Mustcla and Maries are distinct then 

 the present form must be called Martes sylvatica, as was done by 

 Mr. Edw. R. Alston (Proc. Zool. Soc., 1879, p. 468); but when 

 they are united in a single genus, then the species under con- 

 sideration is rightly called Mustela martes ; and as the latter 

 course is adopted by Professor Flower (Cat. Vert. Coll. Surgeons, 



