426 



ME. E. T. NEWTON ON THE VERTEBRATE FAUN>. [Aug. 1 899, 



femur, tibia, and fibula of corresponding size. The most important 

 specimen, however, is part of a skull and lower jaw with nearly 

 all the teeth in place, which was acquired by Col. Underwood, of 

 Sevenoaks, and given by him to the late Miss Bevington, by whom 

 it was generously presented to the Museum of Practical Geology. 



The similarity of the type-humerus to that of a polecat, rather 

 than to that of a marten, was commented on in my earlier paper, 

 and all the additional specimens show a like afiinity, being more 

 robust than the limb-bones of the last-named species, although not 

 attRining the same' length. 



The humerus, like that first described, is from the left side ;. 

 it consequently represents a second individual, and, being rather 

 longer (57*5 mm.), indicates a somewhat larger animal. The femur 

 is 64 mm. long, and its condyles are 13 mm. wide. The tibia is 

 67 mm. long, and its proximal end is 12-5 mm. wide ; seen from 

 the side this bone is more curved than the tibia of the marten or 

 polecat with which I have had the opportunity of comparing it. 



The skull, so far as preserved, agrees with that of the polecat,, 

 and not with the marten ; the dental formula being : — 



. 3 1 3 1 



m. 3, c. -^, pm. -, m. ^. 



The front part of the skull is well-preserved ; but the upper and 

 hinder parts of the brain-case are wanting. On the left side 

 the orbit is complete, and the jugal arch, with a slight imper- 

 fection, is continued into the squamosal and auditory region ; the 

 articulation for the lower jaw, the external auditory meatus, and 

 the tympanic bulla are preserved. The angle formed by the two 

 rows of cheek-teeth is wider than in the marten, and corresponds 

 with what is found in the polecat. 



The broken condition of this skull prevents some important 

 measurements from being taken ; but the following show that in 

 all particulars this skull is bigger than the largest of the gigantic- 

 forms measured by Hensel.^ 



Measurements of Skull and Lower Jaw (in millimetres), 





Ightham. 



Hensel's 



Hensel's 



Woldrich's 





largest (S ■ 



medium. 



largest. 



Basal length 



?69-5 



67-3 



58-1 



61-1- 



Width across jugal arches 



51-0 



46-4 



38-2 



44 



Width outside upper canines... 



•20-6 



17-5 



15-1 



17-5 



Length of palate 



350 



33-1 



28-7 





„ upper cheek-teeth ... 



22-0 



20-4 



18-2 





„ lower-jaw ramus ... 



46-0 



43-0 



36-7 





» „ „ teeth 



27-5 



25-7 



230 





„ „ „ m. 1 



9-0 



8-7 



8-1 





„ upper pun. 1 



8-5 



8-3 



7-5 





1 ' Craniologiscbe Studien,' Nova Acta Acad. Leop.-Oarol. Nat. Cur. vol. xlii 

 (1881) p. 125. 



