298 



PROCEEDINGS OF THE ACADEMY OP 



Measurements. 



Note on " Abromys lordi" etc. 



The foregoing pages embrace an account of all the species of 

 Perognathus which have come under my notice. There are, how- 

 ever, several other described animals which appear to belong in 

 this genus or in its immediate vicinity, one of these from the 

 United States. This latter is the Abromys lordi, Gray, P. Z. S. 

 1868, p. 202 ; the following is the notice in full. 



"3. ABROMYS, Gray. 



"Upper cutting teeth with a longitudinal groove; fur soft, abun- 

 dant, uniform, long, and close. Tail tapering, cylindrical, covered 

 with short hair almost hiding the rings of scales. 



"Perognathus, sp., S. Baird, Mamm. N. A. 423. 



" Abromys lordi. B. M. 



"Fur soft, abundant, gray-washed, with blackish tips ; chin and 

 under side of body whitish ; tail tapering, gray, with a blackish- 

 brown upper surface and tip ; hair of the back dark lead-color, 

 with a short gray band and minute black tip. 



"Perognathus monticolor [sic], Lord, in B. M. 



"?Perognathus monticola, S. Baird, Mamm. N. A. 422, t. 51, f. 3 

 (skull). 



" Hab. British Columbia {Lord). 



" The teeth destroyed. Length of body and head 3 inches, of 

 tail 3 inches. It diners from Dipodomys phillipsii and other spe- 

 cies of that genus in having no white spot over the eye at the 

 base of the ear, or white band across the thigh." 



This account, dealing chiefly in vague generalities, and including 

 a trivial comparison with an animal of a widely different genus, 

 is worthless for all practical purposes. It would be well if the 

 type could be re-described with reference to the points which afford 



