X.—<i>On some external characters of Ruminant Artiodactyla</i>—Part II. <i>The</i> Autilopinæ, Rupicaprinæ, <i>and</i> Caprinæ, <i>with a note on the penis of the</i> Cephalophinæ <i>and</i> Neotraginæ
Annals & magazine of natural history