623 



the diapophysis of the first lumbar, as compared with that of the last dorsal, is as extreme as 

 that in the Common Ox ; but the succeeding lumbar diapophyses are less broad. The outer 

 angle of the ilium is more pointed, and the posterior notch of the ilium is much shorter and 

 deeper than in the Common Ox. 



Presented by the Zoological Society of London. 



3820. The horns of a young female Aurochs (Bison europ&us). Huntenan. 



3821. The skull of the male Gaur, or Indian Bison (Bison Gaur). 



The characters of the genus are shown by the short premaxillaries and the proportion of the 

 maxillaries which enter into the formation of the external nostril ; but the frontal bones at the 

 interspace between the horns are, with the conjoined parietals, developed into a thick, rough 

 and prominent convex ridge, which differs from that in .Bo* chiefly by its greater elevation above 

 the ridge formed by the superoccipital. The orbits are less prominent than in the Bison euro- 

 pceus. The horns have a similar size, direction, and extent of curvature. 



Purchased. 



3822. A horn of an American Bison (Bison americanus). Hunterian. 



9 



3823. A horn of an American Bison (Bison americanus). Hunterian. 



3824. A horn of an American Bison (Bison americanus). Hunterian. 



Genus Bos. 



3825. The skeleton of the Long-horned or Lancashire variety of the Common Ox 

 (Bos Taurus). 



The vertebral formula is : 7 cervical, 13 dorsal, 6 lumbar, 5 sacral, and 21 caudal. The 

 neural spine is longest in the third dorsal, whence the spines gradually shorten to the tenth : 

 the metapophysis passes from the diapophysis to the zygapophysis in the tenth, eleventh and 

 twelfth dorsals. In the first lumbar the diapophysis exchanges its short, thickened, obtuse 

 shape for a long, broad, vertically compressed plate : these processes increase in length to the 

 fourth lumbar. The foramina for the spinal nerves directly perforate the neurapophyses of 

 the dorsal vertebrae : they escape by conjugational foramina at the interspaces of the lumbar 

 vertebrae. The humerus exceeds the metacarpus, and the femur the metatarsus, in length. 

 The ulna, though anchylosed to the radius, is uninterrupted from the olecranon to the styloid 

 process. 



Hunterian. 



3826. The cranium and horns of the Long-horned variety of the Common Ox (Bos 

 Taurus). Huntenan. 



