48 BULLETIN NO. VII. 
in keeping alongside, and soon had him by theear. The mouse 
rolled and kicked and scratched and bit, but to no avail. The 
shrew was evidently much pleased, and forthwith began to 
devour the ear. When he had it about half eaten off the mouse 
again tore himself free; but his inveterate little foe did not 
suffer him to escape. This time the shrew clambered up over 
his back, and was soon at work consuming the remainder of 
the ear. This being satisfactorily accomplished, he continued 
to push on in the same direction, till he had cut through the 
skull, and eaten the brains, together with the whole side of the 
head and part of the shoulder. This completed his first meal. 
As soon as he had finished eating I placed him upon the scales, 
and found that he weighed exactly 12 grammes—an increase of 
.80 gramme.” 
Sorex cooperi BACHMAN. 
COQPER’S SHREW. 
Sorex cooperi BACHMAN. Journ. Acad. Sci., Phila. VII. 
REICHENB. Naturg. Raubth. 
DEKay. Zool. of N. Y. 
Aup.and Bacw. Quad. N. A. 
WAGNER. SchreberSiiugeth. B. V. Suppl. 
BAIRD. Mam. N. A. 
FITZINGER. Kritische Untersuch. 
ALLEN. Bull. Mus. Comp. Zool., No. 8. 
Orocidura cooperi REICHENB. Naturg. Raubth. 
Amphisorex lesueri DUVERNOY. Mag. de Zool., 1842. 
Sorex lesueri WAGNER. Suppl. Schreber. Siugeth. V. 
Although the synonyms quoted above, refer to the western 
form, which constitutes the species in its strictest sense, as 
understood by Prof. Baird, the author is greatly inclined to 
believe that at least S. haydeni, and probably several other 
species given in the mammals of North America, are really 
varieties of the present species. Not having material for com- 
parison of this with the other species of the genus, we must 
content ourselves with a brief description of the only Sorex yet 
encountered in Minnesota. The specimens examined in Minne- 
sota were remarkably uniform in size. Average measurements 
are as follows: Length, 3.50; tail, 1.72; head and body, 1.78 ; 
hind foot, about 0.50. 
Sorex platyrhinus, the common eastern species, has not been 
detected in Minnesota. 

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