200 ME. E. T. NEWTON ON THE VEKTEBRA.TE [May 1 894, 



Europe, except much of Eussia, and is scarcer in the northern 

 countries than it is in the south. 



Sheep 1 Goat ? — There are two tibiae among these remains, which 

 I am unable satisfactorily to determine; but as it is possible that 

 they may belong to sheep or goat, it is perhaps best to mention 

 them. 



Sus scrota. (Pig-) — The only specimen representing this species 

 which has yet been found is a single first upper-molar tooth. 

 The species is known in the Forest Bed, as well as in Caves and 

 Pleistocene river-deposits ; it- is now living in Europe and in Asia, 

 extending beyond the 55th degree of north latitude, and occurs in 

 North Africa. 



Carnivora. 



Mustela robusta, sp. nov. PI. XL figs. 17, 18. — A left humerus, a 

 right ulna, and some foot-bones from the Tghtham fissure undoubtedly 

 belong to the genus Mustela, but I cannot refer them to any known 

 species. There can be no question as to their close relation to the 

 marten and polecat, agreeing as they do in minute particulars with 

 the corresponding bones of these animals ; in length, however, they 

 are intermediate between those two species, and are, at the same 

 time, absolutely stouter in build than the much longer bones of the 

 marten. The humeri of the marten and polecat used for comparison 

 present certain slight differences, and in these particulars the fossil 

 humerus agrees best with that of the polecat. The deltoid ridge in 

 the marten is not so strongly developed, neither is the front of the 

 humerus in this region so much flattened as it is in the polecat and 

 in this fossil. In the last two forms also there is a fine raised line, 

 accompanied by a narrow groove, extending from the inner side of 

 the deltoid prominence downward to the inner side of the epicondylar 

 foramen, which is not seen in the marten; and further, the marten's 

 humerus is more suddenly contracted above the epicondylar foramen 

 than in the other two forms. The strong supinator ridge and 

 entepicondylar foramen are similar in all three humeri, but the ridge 

 is proportionately strongest in the fossil, in which also the width of 

 the distal end of the bone is absolutely greater than in the marten. 

 The length of this fossil humerus is 54 mm., the width of the 

 proximal end 12 mm., width of distal end 15 mm., the smallest 

 circumference of shaft 165 mm. 



The ulna, as already stated, is intermediate in length between 

 that of the polecat and marten, but is absolutely stouter than in 

 the marten, and the olecranon process is especially broad. The 

 inner and distal end of this ulna has the prominent, elongated, and 

 sharp ridge found in Mustela ; while the opposite side of the bone 

 near the middle has a well-marked prominence for the attachment 

 of the ulno-radial ligament. 



Two metacarpals and a metatarsal, which are intermediate in 

 size between the same bones in the polecat and marten, while 



