1915.] 



SCAPANtJS OEAEIUS SCHEFFEEI. 



63 



SCAPANUS ORARIUS SCHEFFERI subsp. nov.^ 

 Scheffer's Mole. 

 (PL IV, fig. 3; PI. VI, fig. 12.) 



Type locality. — Walla Walla, Walla Walla County, Washington. 



Type specimen. — No. 204997, U. S. Nat. Mus., Biological Survey 

 collection; 6' adult, skin and skull; collected August 8, 1914, by 

 Theodore H. Scheffer. 



GeograpMc range. — Extreme southwestern British Columbia, north- 

 western Washington (east of Puget Sound and north of latitude 48° 

 N.), central and southern Washington from the west slopes of the 

 Cascade Mountains east to WaUa Walla, and both slopes of the Cas- 

 cade Mountains in northern and east-central Oregon. 



General characters. — Similar to S. o. orarius but much paler, slightly 

 larger, with both hind and fore feet relatively larger, and claws 

 heavier. Skull about the size of that of orarius, with relatively 

 shorter and broader rostrum and greater inter orbital breadth. 



Color. — Freslh autumn pelage: Upperparts glossy deep mouse gray; 

 underparts shghtly paler and more grayish. Worn summer pelage: 

 Upperparts hair-bro">vn to pale fuscous; underparts mouse gray. 



Slcull. — Compared with that of S. o. orarius, the skull of schefferi is 

 broader interorbitally and has a relatively and actually shorter and 

 broader rostrum, more evident sublachrymal-maxillary ridge, heavier 

 mandible, and heavier dentition. 



Measurements. — Type (adult male): Total length, 170; tail verte- 

 brae, 35; hind foot, 23. Average of 3 adult males (including type) 

 from type locahty: 168.7 (165-171); 34.7 (34-35); 23 (23-23). 

 Slcull: Type (adult male): Greatest length, 34.7; palatilar length, 

 14.6; mastoidal breadth, 16.7; interorbital breadth, 8.4; maxillary 

 tooth row, 11.2; mandibular molar-premolar row, 10.9. Average 

 of 3 skulls of adult males (including type) from the type locality: 

 Greatest length, 34.4 (34.2-34.7); palatilar length, 14.4 (14.2-14.6); 

 mastoidal breadth, 16.4 (16.2-16.7); interorbital breadth, 8.3 

 (8.2-8.4); maxillary tooth row, 11.1 (11-11.2); mandibular molar- 

 premolar row, 10.8 (10.8-10.9). Average of 2 skulls of adult females 

 from the type locality: Greatest length, 32.9 (32.8-39); palatilar 

 length, 13.7 (13.6-13.8); mastoidal breadth, 15.9 (15.8-15.9); inter- 

 orbital breadth, 8.2 (8.2-8.2); maxillary tooth row, 10.6 (10,6-10.6); 

 mandibular molar-premolar row, 10.4 (10.3-10.5). 



Remarlcs. — Typical specimens of scJie-fferi are easily distinguishable 

 from S. 0. orarius, its most closely allied form. The type specimen 

 has fresh autumn pelage on the upperparts, the underparts stiU re- 

 taining the worn summer pelage. On the face of the type specimen 



1 Named for Theodore H. Scheffer in recognition of his careful investigations of the habits and ecology 

 of American moles. 



