54 



MONOGRAPHS OF NORTH AMERICAN KODENTIA. 



Tablk IX. — Measurements of seventy-five skulls of Hksperomys leucopus <ukI Us varieties, and of lite other 



species thai are subgenerically affined therewith. 





'."'■•- 



1 1 I 

 i 



a i 



i i 



MB 



i i . I 



: ; 1 



WW 



I 1 1 ! 



i ins 



Locnlil v. 



Middleborough, Mass. 



do 



do 



do 



do 



do 



do 



do 



do 



do 



do 



do 



do 



do 



do 



do 



do 



Carlisle, Pa 



Pennsylvania 



do 



Clarke County, Va. . . 



do 



do 



do 



do 



do 



do 



do 



Saint Louis, Mo 



Fort Ripley, Minn . .. 



Burlington, Vt 



do 



Georgia 



.do 



Hillsborough, N. C. .. 



Washington, Miss 



do 



Washington Ter 



American River, Cal . 

 Fori Crook, Cal 



0.38 

 0. 37 

 0.38 

 0. 37 

 0.37 

 0. 38 

 0.30 

 0. 40 

 0. 39 

 0.38 

 0. 37 

 0.39 

 0.37 

 0.37 

 0.37 



0.38 

 0. 40 

 0.38 

 0.37 

 0.40 

 0.42 



0.40 

 0.38 

 0.38 

 0.40 

 0.38 



0.51 

 0.5-2 



0.4'J 

 0.50 

 0.48 



0.52 

 0.51 

 0. 52 

 0.50 



0.50 



0.45 



0.40 

 0. 45 



0. 55 

 0. 54 

 0. 50 

 0.55 

 0. 52 



0.52 



0.54 

 0.60 

 0.49 



0.16 



0.17 

 0. 15 



0.18 

 0.17 



0. 18 

 0.20 

 o. 18 

 0. 17 

 0.18 

 0.13 

 0. 18 

 0. 19 

 0.17 

 ii. L8 

 0. 17 

 0. 19 

 o. 18 

 o. 16 

 0.15 

 0. 17 

 0.19 

 0. 16 

 0.10 



o. ir> 



0.15 

 0.10 

 0. 15 

 0. IS 

 0. 19 

 0.18 

 0. 17 

 0.19 

 0.18 

 0.17 

 ii. is 

 0. 18 

 0. 17 

 o. 19 

 n. 15 



o 

 a 



0.64 

 0. 62 



0.00 

 0. 01 

 0.63 

 o.oo 

 0.C6 

 0.63 

 0.68 

 0. 63 

 0.68 

 0. 69 

 o.oi 

 0.67 

 0. 01 

 0.00 

 0. 07 

 0.07 

 0. 66 

 0.64 

 0. G2 

 0.69 

 0.63 

 0.04 

 0.65 

 0.56 

 0.58 

 0. 57 

 0.63 

 0.00 

 0.68 

 0.62 

 0. 00 



o.oo 

 0.62 

 0.68 

 0.07 

 0.68 

 0.67 



Specimen and remarks. 



Typical of leucopus. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



Typical of "nvyoides". 



do. 



Supposed gossijpinus. 



do. 



Representing "cognutus". 



do. 



do. 



Typical of "boylii ". 

 Type of "boylii". 

 Supposed to be " gainheli ". 



in ih. fractional numbers, the numerator is that <>f skull itself, the denominator beiug that of the corresponding skin. 

 t The " height " is taken by laying the si; nil on a glass plate (when it rests upon On' incisors am! bailie ossessj, ami moasur 

 nig from the glass to tin liighest point, which is at the parietals, iu a perpendicular t but passes slightly iu front of the bulhe- 

 ; From ti|» of incisors t * back of condyle. 



