﻿98 



NORTH AMERICAN FAUNA. 



[No. 10. 



Cranial and dental characters. — Skull decidedly larger than hendirii 

 (23.5 by 10.5. mm.); molariform teeth about the same size; unicuspi- 

 date teeth less crowded and series longer; second unicuspid smaller 

 than first. The skull is intermediate in size between hendirii and 

 XJalmeri. 



Measnrements. — Tyi^e specimen: Total length, 166 mm.; tail verte- 

 brie, 78 mm.; hind foot, 20.5 mm. Average of 3 specimens from type 

 locality (Lake Cushman, Washington): Total length, 160.3 mm.; tail 

 vertebrie, 73.3 mm. ; hind foot, 20.5 mm. One of these has a short tail. 

 The average of the other 2 is: Total length, 165 mm.; tail vertebrae, 

 78 mm.; hind foot, 21 mm. 



General remarks. — So far as known alhiventer is restricted to the 

 Olympic Mountains. Its large feet indicate that it is more aquatic 

 than the other members of the group. The white of the under i^arts is 

 much more marked than in the Eastou and Port Moody specimens of 

 hendirii J and the tail is considerably longer. 



ADDENDUM. 



While this paper is passing through the press, a remarkable new 

 species of iSorex proper has been received from southern Mexico, and is 

 here described. 



SOREX STIZODON sp. nov. 



Tyjje from San Cristobal, Chiapas. Mexico, No. 75885, $ ad. U. S. Nat. Museura, 

 Dept. of Agriculture Coll. Collected Sept. 25, 1895, by E. W. Nelson and E. A. Gold- 

 man. Orig. No. 8473. 



General cliaracters. — Similar to 8. sanssurei in external appearance, 

 but slightly smaller, and rump not decidedly darker than rest of back. 



Color. — Upper parts finely mixed sei)ia brown and dusky; under 

 parts seal brown, passing insensibly into color of sides and back; tail 

 indistinctly bicolor, dusky above, pale below. 



Cranial and dental cliaracters. — Skull similar to that of saussurei in 

 general form, great breadth of constriction and breadth of palate; but 

 shorter and broader, with brain case more inflated and rostrum shorter. 

 First and second unicuspids large, the second much larger than first 

 and relatively larger than in any other member of the genus known to 

 me. Contrasted with saussurei the molariform teeth are decidedly 

 smaller and less emarginate posteriorly. The chestnut tips to all the 

 teeth are reduced to a minimum and very pale. 



2Ieasnrements, — The flesh measurements have not been received from 

 the collector. The skin measures as follows: Total length, 105; tail 

 vertebrae, 38; hind foot, 12. 



