NO. 1101. PROCEEDINGS OF THE NATIONAL MUSEUM. 81 



Far long, deuse, aud sUiuing, coarser than in other American 

 moles; consisting of two kinds of liairs, (1) a long, -fine, creuulate 

 under fur with enlarged tips, and (2) still longer, straight hairs, also 

 with enlarged and tapering extremities, which in adults are generally 

 more or less curved. 



Color above rich, dusky brown; on the sides paler; on the under 

 surfaces still paler and tinged with gray; yonug more reddish brown 

 throughout; hairs dark plumbeous, except at the extremities; those 

 on the face and chin in adults often nearly pure white; a ring of pure 

 white fur around the wrist, the ankle, and the eye. Tail colored like 

 the body, dusky above and slightly paler below, with jialer or commonly 

 white hairs on the under side at the tip or sometimes entirely Avhite 

 tipped. Backs of tlie fore and hind feet dusky. Fringe of the manus 

 sordid white. Whiskers dusky. Claws pale. 



Mamma3 4 pairs, 2 jiairs inguinal and 2 pairs pectoral. 



SKULL. 



Facial portion long and narrow. Anterior nares directed obliquely 

 upward. Preniaxill* extending much beyond the nasals anteriorly; 

 the anterior half of the facial portion horizontal and the posterior half 

 rising nearly at a right angle and meeting the nasals in their anterior 

 fifth. jS^asals terminating anteriorly in an acute point in adults, but 

 truncate in the young; their sides parallel in the anterior half, but 

 meeting in a very acute angle posteriorly where the nasals are inserted 

 between the deflected borders of the frontals. Parietals irregularly 

 triangular, emarginateon the median line anteriorly. Squamosal with 

 a broad prolongation behind the tympanic bulla. Zygomatic arch short, 

 straight, directed obliquely upward posteriorly. The squamosal sup- 

 plies only a short portion of the posterior end of the arch, the remain- 

 der being apparently composed entirely of the zygomatic process of the 

 maxillary. No malar can be dete(;ted even in the youngest skulls. 

 The uuixillary throws out a slender process which bridges over and 

 confines the infraorbital foramen, and the distal end of this process is 

 dilated and abuts against the posterior end of the lachrymals and also 

 touches the neighboring margin of the frontal. The lachrymal is large, 

 oval in shape, and lies on the face of the frontal. Foramen magnum 

 large and oval, about twice as long as broad. Tympanic bulhe incom- 

 plete 1 )ehind and overlaid internally by the basisiihenoid. Palate short, 

 eniarginate behind, exposing the ethmoid and vomer. 



Mandil)le with a slender horizontal ramus. Coronoid process large, 

 erect, rather broad, and only moderately uncinate. A slight projection 

 below the condyle on the posterior margin of the ascending ramus. 

 Angular process long aud slender as in the shrews, moderately dilated 

 at the i)roximal extremity. It is slightly bent inward, and twisted upon 

 itself so that the outer surface looks obliquely downward and the inner 

 surface obliquely upward. 



Proc. X. M. vol. xix 6 



