16 PROCEEDINGS OF THE ACADEMY OF [Jan., 



but Oldfield Thomas (Ann. and Mag. Nat. Hist, XI, 1913, p. 585) 

 •considers that it applies rather to M. rufus of authors, and I so use it. 



16. Mustela aureoventris Gray. 



Mustela aureoventris Gray, Proc. Zool. Soc. London, 1864, p. 55. (Ecuador.) 



One specimen (12,731, Coll. A. N. S. Phila.), male, procured in 

 the Pagma forest, July 11. 



Measurements: Length 420 mm., tail 165, hind foot 48, ear 12. 



While there is an earlier Mustela auriventer Hodgs, 1841, which in 

 my opinion would invalidate Gray's name, yet it does not seem 

 ■desirable to propose a substitute until the relationship of the Ecuador 

 species to those described from Colombia and Peru is definitely 

 settled. At present I am unable to secure any of the material 

 necessary for comparison. 



'' The only weasel seen on the expedition was shot by Mr. Lemmon, 

 my assistant, in the Pagma forest from a tree at a low elevation, and, 

 until picked up, was thought to be a squirrel." (S. N. Rhoads.) 



17. Blarina osgoodi sp. nov. 



Eight specimens of a Blarina were obtained at Hacienda Garzon 

 on Mt. Pichincha at an altitude of 10,500 ft. and on the paramo 

 1,500 ft. higher. Four of these were prepared as skins and the 

 others preserved in spirits. 



So far as I am aware, no Blarina has previously been found south 

 of Colombia {B. thomasi Merriam and B. squamipes Allen) and Merida, 

 Venezuela {M. meridensis Thomas) ; and as the Ecuador specimens 

 differ from all of these, I propose to name them Blarina osgoodi for 

 Mr. W. H. Osgood, of the Field Museum of Natural History, whose 

 expeditions to South America have done so much to enrich our 

 knowledge of its mammals and birds. 



Type from Hacienda Garzon, Mt. Pichincha, 10,500 ft. altitude, 

 May 12, 1911, female, collected by Samuel N. Rhoads. No. 12,732, 

 Collection A. N. S. Phila. 



Similar in size and coloration to B. thomasi Merriam from Bogota, 

 but not quite so broA^m. 



Anterior unicuspid teeth less distinctly angulate on the inner side 

 than in B. thomasi and the third and fourth unicuspids quite different. 

 The third unicuspid in B. thomasi is apparently as long as broad, 

 while in B. osgoodi it is very much broader than long, and both it and 

 the fourth unicuspid are smaller in every way. 



Total length 105 mm., tail 30 mm., hind foot 14 mm. 



Skull measurements: total length 22 mm., greatest breadth 10 mm. 



