U. 8. P. R. R. EXP. AND SURVEYS ZOOLOGY GENERAL REPORT. 



Measurements. 



Measurements of iwo specimens in alcohol. 



The only species requiring comparison with this is the S. exilipes, a specimen of which, doubt- 

 ingly referred to this species, has been found at Brownsville, on the opposite bank of the Rio 

 Grande. It may, however; be readily distinguished by the character of the fur, which is very short 

 and close, sub-erect, almost like long-piled velvet, especially on the breast and throat, instead of 

 lying back. The feet are larger and broader. The most appreciable difference, however, is in 

 the teeth, which are much larger in every way ; the first two lateral upper teeth are much 

 longer and more pointed, and instead of sloping forward and overlapping they are almost 

 directed backwards, or at least perpendicularly to the palate. The colors, too, are appreciably 

 different. 



The specimens described form part of the Berlandier collection presented to the Smithsonian 

 Institution by Lieutenant Couch, and were probably gathered by Dr. Berlandier, in the vicinity 

 of Matamoras. Among the notes of Dr. Berlandier is the description of a Sorex, for which he 

 proposes the name of S. lessonii, and which may possibly refer to one of the above specimens, 

 although there is some discrepancy. There is unfortunately no description of the teeth of his 

 animal. 



taken before Hkinniug. 



