78 



IJ'ORTH AMEEICAN FAUNA. 



[No. 38. 



1 



heavy, about two-thirds as broad as long. Pelvis narrow, bones of 

 opposite sides not touching under acetabula; no osseous bridges con- 

 necting sacral vertebrae with ischium. Superior surface of last sacral 

 vertebra with a small, cuneate, longitudinal process. Os falciforme 

 short, reaching proximal end of first metacarpal; broad and triangular 

 at base, abruptly tapering into a narrow apical process. 



Skull conoidal (less so than m Scalopus), fl.at (less so 

 than in. Scalopus or Scapanus), somewhat elongate, with 

 moderately broad braincase, slightly constricted inter- 

 orbitally. Mastoids moderately heavy. Interparietal 

 moderately large (smaller than in Scapanus, larger than 

 in Scalopus), somewhat rectangular, breadth about one- 

 third the length, emargiuate posteriorly and usually 

 anteriorly also, with a posterior median projection. 

 Frontal region depressed; frontal sinuses moderately 

 swollen. Rostrum moderately long; anterior ends of 

 premaxillse slightly thickened and extending beyond 

 nasals, forming a truncate notch anterior to nasals. 

 Anterior nares opening forward. Zygomata moder- 

 ately long, relatively heavy, considerably out-curved, 

 the posterior end attached about medially on squamosal. 

 Foramen magnum oval, of moderate size. Infraorbital 

 foramen relatively small (about as ui Scapanus), the 

 plate forming its outer waU moderately broad (rela- 

 tively broader than in Scalopus or Scapanus) . Audital 

 bullse incomplete; no auditory meatus. External 

 pterygoid region moderately inflated (less so than 

 in Scapanus) both posteriorly and anteriorly. Mesopterygoid space 

 relatively long and narrow, the sides nearly straight and slightly 

 converging posteriorly. Palate moderately elongate, relatively nar- 

 row, terminating opposite posterior edge of last molar; posterior 

 border of 

 palate emar- ^ 

 ginate, with- 

 out spine or 

 notch. An- 

 terior pala- 

 tine f o r a - 

 mina mod- 

 erate (relatively larger than in Scapanus), oval; first pair of poste- 

 rior palatine foramina moderate, oval to elliptical; second pair, 

 minute or obsolete. Horizontal ramus of mandible moderately heavy, 

 curved upward at posterior end and downward at anterior end; coro- 

 noid elongate, quadrate, truncate, directed slightly forward ; angle of 



B2020-103 

 Fig. 14.— Tail of 

 Parascalops brew- 

 en (Xl|). No. 

 186618, U. S. Nat. 

 Mus., Merriam 

 collection; from 

 Locust Grove, 

 N. Y. 



Fig. 15.— Snout of P. breweri (Xl|-). 



B 2021-103 

 Individual referred to in fig. 14. 



