FAMILY SORECID. 15 
GENUS SCALOPS. Cuvier. 
Muzzle elongated and simple, flexible, cartilaginous. Eyes minute, and scarcely visible. 
No external ears, but simply a minute aperture. Feet short, five-toed ; the hand broad, 
with fingers joined together by the integuments to the last phalanx; the claws long and 
flat. Hind feet slender, with delicate hooked nails. Teeth: Incisors, 2-2; cheek teeth, 
t$—- $$ = 34-46. A musky gland near the vent. 
THE COMMON SHREW-MOLE. 
SCALOPS AQUATICUS. 
PLATE IV. FIG 2.—(STATE COLLECTION.) 
Sorex aquaticus. LN. 12 ed. p. 74. 
Brown Mole. PENN. Aret. Zool. Vol. 1, p. 141. 
S. aquaticus. ScHREBER, Saugthiere, pl. 158, (indifferent: ) 
S. canadensis. HAr an, Fauna Americana, p. 32. 
The Shrew-mole. Gopman, Am. Nat. Hist. Vol. 1, p. 84, fig. 3. 
Scalops canadensis. Riewarpson, F. B. A. Vol. 1, p. 9. 
Shrew-mole. Emmons, Massachusetts Report, 1840, p. 15. 
Characteristics. Fur glossy, and like velvet; its most usual color silvery grey, brown. 
Length, 6-8 inches. — Var. a, bright tawny; b, hoary. 
Description. Body cy:indrical, without any distinctly apparent neck. Fur thick, velvety 
and lustrous. Head small, with its muzzle elongated to a point. The muzzle about a 
quarter of an inch long, and naked towards its extremity, @vhich is truncated. The nostrils 
are oblong, and placed just above its smooth truncated extremity. Eyes exceedingly minute, 
and completely concealed among the fur. No external ear; the auditory opening, entirely 
concealed in the fur about three-quarters of an inch behind the eye, and just admitting the 
point of apin. Fore feet apparently naked, but in fact covered with short white hairs. The 
five phalanges are united at the base of the claws, which are large, white, flat, slightly 
curved, and brownish beneath near their bases. According to Godman, it is furnished exterior 
to the thumb with an additional bone articulated to the wrist, and a similar rudimentary one 
on the external edge of the hand. Hind feet slender, thinly covered by hair, and with small 
white compressed claws. Tail thickest in the middle, tapering to a point, and sparsely 
furnished with short hairs. The descriptions of the teeth, as given by various authors, vary 
not only in the names given to the different kinds of teeth, but likewise.in the total number ; 
the incisors, for instance, are confounded with the canines, these latter with the molars. 
Hence, when the second cheek tooth on each side is lost, the first, which is closely in contact 
with the incisor, is considered as a second incisor; and thus confusion arises from the 
inspection of a single head, or from immature or imperfect ones. Desmarest accordingly 
assigns thirty teeth as the total number; F. Cuvier thirty-six, in which he is copied by God- 
man; and Richardson, with a fully developed skull, enumerates forty-four. We have but 
