SHRE WS. 329 
is, moreover, much less decided than in the latter; and indeed, when the teeth have, 
been much worn by long use, tends more or less completely to disappear. 
THE MusK-SHREWS. 
Genus Crocidura. 
With the musk-shrews, which include by far the largest representatives of the 
entire family, we come to the first members of the group characterised by their white 
teeth. No representatives of the musk-shrews occur in Britain, although the spider 
musk-shrew (Crocidura aranea), represented on the left side of the illustration on 
p. 325, and the common musk-shrew (C. suaveolens), shown in the accompanying 
THE COMMON MUSK-SHREW (nat. size). 
figure, occur on the continent of Europe. These shrews, which are of terrestrial 
habits, have either thirty or twenty-eight teeth, well-developed ears, and a long 
tail, and are covered with a coat of mingled long and short hairs. The eyes are 
very small, and placed nearer to the ears than to the tip of the nose. Each side of 
the body is furnished with a gland (sometimes absent in the female), secreting the 
musky product from which these shrews derive their popular name. 
More than eighty species of musk-shrews have been described; the range of 
the genus embracing Southern and Central Europe, Africa, and Asia. The species 
with the widest range is the spider musk-shrew, above-mentioned, which is found 
from North Africa and Central and Southern Europe to Central Asia, extending as 
far north as North-Eastern Siberia, and as far south as Ladak. It belongs to the 
typical group of the genus, characterised by having only three small conical teeth 
behind the large first upper incisor; and it is a comparatively small species, of about 
