COUES ON INSECTIVOROUS MAMMALS. 651 



ardsoni " of Baircl by superior size and fuliginous coloration ; from S. 

 pacijicus by the same points in which S. rickardsoni differs, tail an inch 

 shorter, etc. 



3. SoREX (I^OTTOSOREX) CRAWFORDI Baird, n. subg. et sp. 

 Sorex {Notiosorex) crawfordi, Baird, MSS. iued., 1861. 



Teeth 28 ; upper unicuspids 3 ; third a little smaller than second and 

 first ; upper incisor without internal notched lobe, the posterior hook 

 smaller than the next tooth ; lower incisor reaching below the two suc- 

 ceeding teeth, its cutting edge not denticulate, merely sinuate ; denti- 

 tion as a whole very heavy, the teeth uncolored, except points of a lew 

 anterior ones. Head large. Tail short; little over half as long as head 

 and body. 



Color "light chestnut-brown, paler beneath". Very small; length 

 (alcoholic) 1.90; tail- vertebrae 1.10, with hairs 1.15; hand 0.25; foot 

 0.40 ; tip of nose to incisors 0.11, to eye 0.40, to occiput about 0.80 ; 

 length of skull 0.68, its width 0.31, its height 0.18; width at interorbital 

 constriction 0.17. 



Sab. — Fort Bliss, New Mexico, or vicinity (Dr. S. W. Crawford, tJ. 

 S. A.). 



Type No. fHI, Nat. Mus. (Smiths. Inst.) ; specimen in alcohol 2653 ; 

 prepared skull 4437. 



In further elucidation of this interesting form, I quote passages from 

 Professor Baird's original MS. : — 



" It is much to be regretted that the only known specimen of this species 

 is in exceedingly bad condition. There is enough, however, to show its 

 strongly-marked distinction from any other North American species 

 .... The muzzle is wider than usual in our small Shrews, owing to the 

 size of the molar teeth ; the head, too, appears disproportionately large. 

 The skull is very large for the size of the animal, measuring nearly 0.70; 

 the rostral part is broad, and the interorbital constriction slight; the 

 greatest width of the upper jaw is more than half as much as that of 

 the cranium. The coronoid process of the mandible is short and stout. 

 The molar teeth are of enormous size. Thus the middle of the ante- 

 orbital foramen falls over the line of separation of the first and second 

 molars [i. e., molariforni teeth], and the molar series is nearly two-thirds 

 as long as the whole line of teeth. The upper incisor has no inner 

 lobe or spoon-shaped expansion, resembling that of Blarina in this 

 respect. There are but three upper premolars [i. e., unicuspid teeth]; 

 all compressed transversely, forming a trenchant edge, the lateral out- 

 line pointed. The 1st and 2d premolars are equal and larger than 

 the 3d, which exceeds the posterior hook of the incisor. The lower 

 incisor has no lobes, though the point is hooked upward and the upper 

 outline sinuous. It extends backward to the 1st molar, the 1st and 

 2d premolars being entirely above it ; the latter have each a single 

 cusp. The teeth are entirely colorless, except a slight chestnut tinge to 

 the tips of the incisors and still less on the anterior premolars. 



