217 
SCALOPS T OWN SEND II.— Bach. 
Townsend’s Shrew-Mole. 
PLATE C X L V . — Males. — Natural Size. 
b. Magnitudine S. aquatico duplo major, supra rufo-fuscus. Dentibus 
XLIV. 
CHARACTERS. 
Double the size of the common Shrew-Mole, with eight more teeth than that 
species ; dark liver colour. 
SYNONYMES. 
Common Mole. Mackenzie’s Voyage to the Pacific, &c., p. 314. 
Mole. Lewis and Clark, Journey, vol. iii. p. 42. 
Scalops Canadensis. Rich, Fauna Boreali Americana, p. 9. 
Townsendii. Bach., Jour. Acad. Nat. Sci., vol. viii., part 1, p. 58. 
DESCRIPTION. 
Dental Formula. — Incisive \ ; Canine Molar = 44. 
In the upper jaw the incisors are large, and a third higher than the 
canine teeth usually termed false molars, which immediately follow them ; 
these are succeeded by three small teeth of a nearly conical shape, increas- 
ing in length from the first to the third ; the fourth false molar on each 
side is the smallest ; the fifth is a little larger in size, and slightly com- 
pressed ; the sixth still larger, and has a considerable posterior projection ; 
the four posterior cheek teeth, or true molars, are much larger and higher 
than the anterior ones ; the first of these (which we have called a canine 
tooth) is rather small, and bilobed, with a small internal tubercle ; the 
second and third are the largest and nearly resemble each other, exhibiting 
three distinct points, two external and posterior, and one anterior, the 
external ones being the longest, and the last molar being the smallest, and 
of a triangular form ; in the lower jaw there are two very small incisors 
in front ; next to these are two of a considerably larger size, which, 
although we have called them incisors, are nearly of the same shape and 
appearance as those which succeed them. 
vol. iii. — 28 
