FAMILY. 
SORICIDAE. 
As stated previously, the family of shrews, in its most extended sense, is characterized by a 
general mouse or rat-like appearance, muzzle elongated and tapering; ear, with a distinct concha; 
feet normal, or the anterior smaller than the posterior, by which character of ears and feet it is 
readily distinguished from the Talpide. The soft hair separates it at once from the Aculeata. 
The skeleton presents from 12-14 pairs of ribs; 6-8 vertebra, without ribs ; 3-5 sacral, and 
14-28 caudal vertebre. The tibia and fibula are united, the clavicles thin, the pubic arch 
closed. The stomach is simple, the coecum wanting or very large, the penis long; there are 
peculiar glands on the side of the body, or the base of the tail. 
Of the various genera comprising the family, none are found in North America except those 
belonging to the Soricinae, and the only other new world representative is Solenodon, from Cuba. 
This is as large as a rat, with 40 teeth, and a naked tail. The hair is quite bristly. 2hyn- 
cocyon has large ears, stiff hairs, and four-toed feet. Gymnura is of large size, with rounded 
ears, and naked ears and tail. DMacroscelides has very long hind feet and tail. 
Sus-Famiry SORICINAE. 
The shrews of all parts of the world are distinguished by an elongated and pointed muzzle ; 
external ears, with two inner lobes, formed by the development of the antitragus and helix ; 
feet, five-toed, each with a distinct claw; the fore feet but little broader, if at all, than the 
hinder; the tail variable in length. They are spread over the northern hemisphere, some 
species ranging very far to the north, and, although the smallest of known mammals, sustain- 
ing the rigors of the severest winters. Species have been found in Southern and Central Africa, 
Asia, the East Indies, and the whole of Europe; hitherto, the region of the Rio Grande, of 
Texas, has proved the American limit to the south; no well authenticated specimens having 
been brought from South America. It is true, indeed, that J. E. Gray mentions, in the Pro- 
ceedings of the Zoological Society for 1844, having received two shrews from Coban, in Central 
America, which he names Corsira tropicalis and C. temlyas, but he has, as yet, published no 
accounts of them, not even their specific characters. 
The skull of the shrews has several peculiarities. It is long and narrow, much pointed 
anteriorly ; compressed at the orbits, and in some species having a distinct crest along the 
crown, The malar bone is wanting, and there is no zygomatic arch. There is a deep fossa on 
the inner side of the coronoid process. 
The teeth of the shrews vary from 28 to 32, although some American authors give as many 
as 34 and 36, probably erroneously. There are two very large incisor teeth in each jaw, directed 
nearly horizontally forward; the upper pair much curved and forming a hook; the lower 
straighter, and usually with the trenchant upper edge more or less lobed. In the posterior part 
