1915.] 



SCALOPUS AQUATICUS MACHRIlSrUS. 



43 



Type locality .—hexiiigton, Fayette County, Kentucky. 

 Type specimen. — None known to exist. 



Geographic range. — Eastern Iowa, and east of the Mississippi 

 Eiver west of the Appalachian Mountains from western Wisconsin, 

 northern lUinois, southern Michigan, southwestern Ontario (Point 

 Pelee), and northern Ohio, south to central Tennessee. 



General cJiaracters. — Largest of the genus; tail relatively long; 

 color paler than that of S. a. aquaticus and usually more reddish 

 brown; skull flat, broad, heavy, and angular; rostrum massive; 

 teeth very large. 



Color. — Full winter pelage: Above, sepia, mummy brown, or hair- 

 brown, occasionally showuig pinkish buff or ciimamon-buff on nose; 

 underparts more grayish than back and usually tinged wdth Front's 

 brown or cinnamon-brown. Summer pelage: SHghtly paler than 

 winter pelage and usually more grayish, 



Slcull. — Large, broad, angular, and massive; mastoids very 

 massive; rostrum large; coronoid process and angle of mandible 

 heavy, the former frequently with a distinct secondary process on 

 posterior margin; dentition very heavy. 



Measurements. — ^Adult male from type locahty: Total length, 208; 

 tail vertebrae, 38; hind foot, 24. Adult male from Mdway, Ky.: 

 190; 29; 22.5. Adult female from Midway, Ky., 175; 27; 22. Average 

 of 3 adult males from Warsaw, 111., 199 (194-206), 35.7 (31-38). 

 Slcull: Adult male from Midway, Ky.: Greatest length, 39.1; 

 palatilar length, 16.7; mastoidal breadth, 20.7; mterorbital breadth, 

 8.2«; maxillary tooth row, 12.2; mandibular molar-premolar row, 

 11.6. SkuU of adult female from Midway, Ky. : Greatest length, 

 37.7; palatilar length, 16.2; mastoidal breadth, 19.2; interorbital 

 breadth, 7.7; maxillary tooth row, 12.1; mandibular molar-premolar 

 row, 11.7. Average of 5 skulls of adult males from Warsaw, III.: 

 Greatest length, 39.2 (38.8-39.5); palatilar length, 16.8 (16.6-17); 

 mastoidal breadth, 20.5 (20.3-20.7); interorbital breadth, 7.9 

 (7.7-8.1); maxillary tooth row, 12.4 (11.9-12.6); mandibular molar- 

 premolar row, 12 (11.5-12.2). 



Remarlcs. — The name Talpa machrina Eafinesque ^ and the earliest 

 description of this form were apparently lost to science from shortly 

 after they were published until True ^ resurrected them m 1896; 

 Rafinesque very accurately describes the form and distinctly indi- 

 cates ^'near Lexington" as the locality where the species occurred. 

 In the same publication Rafinesque describes another mole, ^ 'found in 

 woods near Nicholasville and Harrodsburg," under the name Talpa 

 sericea; ^ his second species is clearly the young of his Talpa macJirina. 

 Audubon and Bachman ^ described a mole from southern Michigan, 



1 Rafinesque, C. S., Atlantic Journ., vol. 1, p. 61, 1832. 



2 Tnie, F. W., Proc. U. S. Nat. Mus., vol. 19, p. 20, 1896. 



3 Rafinesque, loc. cit., p. 62, 1832. 



* Audubon and Bachman, Jour. Acad. Nat. Sci. Philadelphia, vol. 8, p. 292, 1842. 



