MUSTELID^E. 



21 



Pig. 6. — Limb bones of a polecat (Mustela putorius). A right femur ; B left tibia; C right fibula 

 (anterior view); D right humerus; £ right radius (antero-external view); F right ulna (inner 

 aspect). All from the Pleistocene of the ISrixham Cave and preserved in the British Museum. 

 In Text-figs. 6 to 10 the anterior aspect of the femur and tibia is shown, the posterior aspect of the 

 humerus. Lettering of Text-figs. 6 to 10. I , head of femur ; 2, great trochanter ; 3, third trochanter ; 

 4, internal condyle of femur ; 5, external condyle of femur; 0, cnemial crest; 7, head of humerus; 

 8, trochlea ; 9, internal condyle of humerus; 10, external condyle of humerus; 11, ent-epicondylar 

 foramen ; 12, humeral articulating surface of radius ; 13, carpal articulating surface of radius ; 14, 

 sigmoid notch ; 15, olecranon. All figures of the natural size. 



/0--; 



Fig. 7. — Limb bones of a giant polecat (Mustela robusta). A right femur; Q right tibia; C right 

 fibula (posterior aspect) ; D left humerus ; F right ulna (inner aspect). All from the Pleistocene of 

 the Ightham Fissure. The femur, tibia and humerus are preserved in the collection of Dr. F. ('inner, 

 the fibula and ulna in that of Mr. W. J Lewis Abbott. 



15 



14-4 



Fig. 8. — Limb bones of a weasel (Mustela vulgaris). J\ right femur; B right tibia; D left 

 humerus ; F left ulna (outer aspect). All from the Pleistocene of the Ightham fissure. The femur, 

 humerus and ulna are preserved in the collection of Dr. F. Corner, the tibia in that of Mr. W. J. Lewis 

 Abbott. 



