Drummond Vole 521 



labradorius Bailey. Much like drummondi, but skull 



flatter. 

 aztecus Allen, like the type, but more buffy in colour, 



and with shorter tail and larger hind-foot. 

 enixus Bangs. Slightly larger than the type and of 



darker colours. 

 terrcenovce Bangs. Slightly larger than the type, with 



dGicidedly larger hind-foot and more yellowish 



colours. 

 breweri Baird. A little larger than the type, with 



paler, grayer colours. 

 nesophilus Bailey. Size of the type, but skull shorter 



and wider, and colours darker. 



For the ordinary field naturalist a simpler, ruder method 

 of identification may be better. The Drummond Vole, then, 

 is the only dark-brown Manitoban Meadow-mouse whose total 

 length is about 7 inches, of which the tail is one-quarter. 

 The only species much like it there are minor, which is easily 

 told by its paler, grayer back, buffy under parts, and smaller 

 size; and Synaptomys, known by its bob-tail and grooved in- 

 cisors. See Plate XXXIX, Figures b, c, and d. 



Life-history. 



On Map 29 the probable range of the race drummondi is range 

 set forth. The spots being the actual records. The other 

 forms are entered in theoretical outline. In Manitoba I found 

 drummondi generally abundant, and got specimens from White- 

 water Lake, Carberry, Poplar Point, Winnipeg, Kenora (Rat 

 Portage), and Lake Winnipegosis, while Preble found it" 

 abundant at Norway House, so no doubt it will be found in 

 every sedgy part of Manitoba. 



I have usually found this species in coarse, rank grass, en- 

 on the edges of marshes, but it often leaves the marshes and ment 

 swarms into the grain fields when the crops are ripe. 



' N. A. Fauna, No. 22, 1902, p. 51. 



