102 Merriam Two New Moles from California and Oregon. 

 The new forms may be known from the following descriptions : 

 Scapanus alpinus sp. nov. 



Type from Crater Lake, Mt. Mazama, Oregon. Altitude about 2130 

 meters [7000 ft.J. No. 79967, $ ad., U. S. Nat. Mus., Biological Survey 

 Coll. Collected Aug. 18, 1896, by Vernon Bailey. Original No. 5784. 



General characters. Similar to Scapanus californicus, but larger, with 

 longer and heavier skull. 



Color. Everywhere uniform grayish plumbeous, much as in cali/orni- 

 cus, but without the brownish tinge ; widely different from the blackish 

 of S. townsendi. 



Cranial and dental characters. Skull similar to that of californicus, but 

 much longer ; molar teeth larger ; last (6th) unicuspidate tooth, both upper 

 and lower, peg-like, lacking the posterior blade or cusp of californicus.* 



Measurements. Type specimen, measured in flesh: total length, 188; 

 tail vertebrae, 38; hind foot, 24.5.f Skull: greatest length, 37; basal 

 length, 32; palatal length, 16.75; greatest zygomatic breadth, 13.5; mas- 

 toid breadth, 17. 



Scapanus truei sp. nov. 



Type from Lake City, Modoc Co., Calif, No. 79290, ad., U. S. Nat. Mus., 

 Biological Survey Coll. Collected June 15, 1896, by Clark P. Streator. 

 Original No. 5289. 



General characters. Similar to S. californicus, but paler and more plum 

 beous in color, and with a distinct inner cusp on last upper premolar. 



Color. Everywhere almost clear plumbeous (No. 14, 'olive-gray,' of 

 Ridgway's Nomenclature of Colors), with a faint darker wash on upper 

 parts. 



Cranial and dental characters. Skull similar to that of S. californicus, but 

 slightly smaller, with narrower palate and decidedly narrower and more 

 slender rostrum. Last upper premolar with a strongly developed, trench 

 ant inner cusp, not present in californicus. 



Measurements. Type specimen (sex unknown) measured in flesh : total 

 length, 170; tail vertebrae, 34; hind foot, 21. Skull: greatest length, 

 34.5; basal length, 29 ; palatal length, 15 ; zygomatic breadth, 13 ; mastoid 

 breadth, 16.25. 



*This may be the result of wear, as the specimen is old. 

 f Two specimens of S. californicus from Ft. Klamath have the tail 33 

 and the hind foot 20.5. 



