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NORTH AMERICAN FAUNA. 



[So. 10. 



inouiitaiii form liviug in dam]3, slieltered places on wooded hillsides and 

 under sacaton grass, at an altitude of 9,500 to 12,000 feet. 



Specimens examined. — Total number, 10, from the following localities, 

 all in the State of Mexico: Mount Popocatej^etl, 5j Salazar, 3; Ajusco 

 Peak, 1; north slope of volcano of Toluca, 1. 



BLARINA FOSSOR sp.nov. Zempoaltepec Blarina. 



Typeivom Mount Zempoaltepec, Oaxaca, Mexico (altitude, 10,500 feet). No. 68545, 

 9 ad., U. S. Nat. Mus., Department of Agriculture collection. Collected July 10, 

 1894, by E. W. Nelson and E. A. Goldman. Original number, 6419. 



Geographic distribution. — Higher slopes of Mount Zempoaltepec (from 

 8,200 to 10,500 feet altitude). 



General characters. — Similar to B. alticola in size, large fore claws, 

 and general characters, but darker, and with differences in molariform 

 teeth. 



Color. — Sooty plumbeous, becoming slightly paler anteriorly; root of 

 nose darker than rest of head; under parts indistinctly paler and with 

 a slight brownish cast. 



Cranial and dental characters. — Compared with B. alticola, to which 

 it is closely related, the skull is slightly shorter. The length of the 

 molariform series is essentially the same, but the unicuspid series is 

 shorter. Upper molariform teeth narrower; large upi)er premolar 

 decidedly different in form, lacking the antero-internal angle, which is 

 completely rounded off', leaving the tooth much narrower in front than 

 that of alticola. 



Measurements (taken in flesh). — Type: Total length. 111 mm.; tail 

 vertebrie, 29 mm.; hind foot, 15 mm. Average of 5 specimens from 

 type locality: Total length, 108 mm.; tail vertebrae, 29 mm.; hind foot, 

 14.6 mm. 



General remarJcs. — On Mount Zempoaltepec Mr. Nelson secured 5 

 specimens of this new Blarina, 25 of B. mexicana, and 1 of B. magna, 



BLARINA MAGNA sp. nov. Big Mexican Blarina. 



PI. 1, fig. 10. 



Type from Totontepec, Oaxaca (altitude, 6,800 feet). No. 68575, $, old, U. S. Nat. 

 Mus., Department of Agriculture collection. Collected July 24, 1894, by E. W. 

 Nelson and E. A. Goldman. Original number, 6493. 



Geographic distribution. — Mountains about Totontepec and Mount 

 Zempoaltepec, Oaxaca (from 6,800 to 8,000 feet altitude). 



General characters. — Size largest of subgenus Cryptotis, equaling 

 Blarina brevicauda; tail long (more than 40 mm.); color dusky; tail 

 scant haired. 



OoZor.— Everywhere dull sooty brown, hardly paler below; chin and 

 throat washed with brownish chestnut (which may be due to food- 

 staining). 



