SYNAPTOMYS 177 



106. Synaptomys (Mictomys) innuitus medioximus Bangs. 

 1900. iSi/naplomy.s (Mictomys) i mm it us medioximus Bangs, Proc. 

 N. Engl. Zool. Club, 2, p. 40. 



Type. — ^Bangs Collection ; adult male. 



Type locality. — L'Anse au Loup, Strait of Belle Isle, Labrador. 



Characters. — Distinguished from S. i. innuitus by its larger 

 size and proportionally flatter skull. 



Fur very long and soft, in full winter pelage (April) nearly 

 concealing ears. 



Colour of ujiper parts rich brown ; back and head dull russet 

 very thickly set with black-tipped hairs ; rump and flanks 

 shading decidedly towards hazel and with fewer black-tipped 

 hairs; long hairs on ears, and in front of and behind ears, hazel; 

 patches at base of whiskers meeting across nose, dull hazel. 

 Under parts dull smoke grey; underfur slate-colour. Feet and 

 hands dusky ; tail dusky above, greyish below. 



Skull much larger than that of S. i. inmdtus but proportionally 

 flatter ; rostrum less deflected ; visible jwrtion of posterior ends 

 of frontal much larger, much less encroached uj^on by the over- 

 lapping edges of the squamosals. 



For external and cranial measurements, see tables at end of 

 volume. 



11. Synaptomys (Mictomys) sphagnicola Preble. 



1899. Synaptomys (Mictomys) sphagnicola Preble, Proc. Biol. See. 

 Washington, 13, p. 43. 



Type. — U.S. National Museum; adult male. 



Type locality. — Fabyans, Coos County, New Hampshire. 



Characters. — Larger than S. innuitus innuitus, with larger 

 skull, longer hind-foot (20 mm.) and tail. Apparently more like 

 8. i. medioximus. 



Colour of upper parts sepia-brown, " quite thickly inter- 

 spersed with black-tipped hairs " ; side glands marked by white 

 patches. Under parts greyish-white. Ears internally slightly 

 darker than general colour of upper parts ; a few hairs at bases 

 of ears and on sides of cheeks light chestnut. Tail sharply 

 bicoloured, dorsally and ventrally concolorous with the body. 



Skull larger and longer than that of S. i. in.nuitus with longer 

 and narrower interorbital region; rostrum longer and stouter; 

 braincase lengthened posteriorly; larger incisive foramina; 

 deeper post-palatal pits and more conspicuous median sloping 

 septum ; and longer and more rounded auditory bullse. Cheek- 

 teeth as in S. innuitus. 



For external and cranial measurements, see tables at end of 

 volume. 



Ronarks.- — No material. 



