160 fiang8^=*Synfiptomy$ Cooperii 



male in another trap in the same bog, in an Arvicola run-way. 



Following is a list of small mammals caught in this last bog, 



which, as I trapped it pretty clean, may be of interest as showing 



the species inhabiting such a place, and their relative abundance : 



Twenty [20] traps set. 

 Sept. 19, 1893. 6 Arvicola riparius. 

 1 Zapus hudsonius. 

 Sept. 20. 5 Arvicola riparius. 



1 Evotomys gapperi. 

 Sept. 21. 3 Arvicola riparius. 



1 Evotomys gapperi. 

 1 Sorex person at us. 

 1 Synaptomys cooperii. 

 Sixty-five [65] traps set. 

 Sept. 22. 17 Arvicola riparius. 



1 Evotomys gapperi. 

 Sept. 23. 10 Arvicola riparius. 



Sept. 24. 6 Arvicola riparius. 



1 Evotomys gapperi. 

 1 Synaptomys cooperii, 

 Sept. 25. 3 Arvicola riparius. 



1 Evotomys gapperi. 

 Sept. 26. 1 Arvicola riparius. 



1 Evotomys gapperi. 

 Sept. 27. 1 Evotomys gapperi. 



Sept. 28. Nothing; took up traps. 



Totals. Arvicola riparius, 54. 



Evotomys gapperi, 7. 

 Sorex personatus, 1. 

 Zapus hudsonius, 1. 

 Synaptomys cooperii, 2. 



This bog contained about an acre-and-a-half, and was bordered 

 on one side by thick swampy woods and on the other three by 

 open fields of grass, and had a small brook running through it, 

 Synaptomys cooperii is, I think, rare, or at any rate very local 

 in this section, as I have trapped persistently for two years in 

 every sort of locality the county affords, and have only taken 

 these three examples. 



As the country about Wareham, Mass., is not unlike that of 



