302 



BULLETIN 56, UNITED STATES NATIONAL MUSEUM. 



tered until we had crossed the Western Dei-ert and reached the rocky 

 base of the Coast Rang-e Mountains in California. 



Ilahlts. — In the vicinity of El Paso these ground-squirrels were 

 abundant, living among rocks and cliffs on both sides of the Rio 

 Grande, in Texas and Chihuahua. They were readily taken in traps 

 baited with cheese. 



Measurements of 33 spec'nnens of the Ainmaspennophilus lencurus group. 



Museum num- 

 ber. 



«2233 



60828 



61153 

 60829 

 60832 



61157 

 61162 

 61163 

 61164 

 611G5 

 61166 



61167 



'(8274 

 60834 

 (1 8275 

 "8279 



60839 

 60840 

 (•(8281 

 n 8282 



20069 

 20078 

 20070 

 20067 

 20068 

 20071 

 20072 

 20075 

 £0077 

 20076 



M 



In skin. 



60828 



61153 

 60829 

 60832 



61157 

 61162 

 61163 

 61164 

 61165 

 61166 



61167 

 63089 

 60830 



6612 



6613 



60834 



6614 



6618 



60839 

 60840 



37036 

 37037 

 35444 

 35442 

 35443 

 35445 

 35446 

 35478 

 35449 

 35482 



o 



153 

 1955 



1956 

 1960 

 1965 



1967 

 1973 

 1974 

 1976 

 1977 

 3564 



3580 

 3585 

 1207 



1214 



1233 

 1234 

 1235 



1288 



1297 

 1324 

 1325 

 1334 



1425 

 1431 

 1473 

 1474 

 1487 

 14S8 

 1501 

 1524 

 1631 

 1532 



Lowilitv. 



AmniospcniiopJiilns leucurus. 



Grand Canyon of the Colorado, 

 near I'ine Springs, Arizona, 



Fir.st water, at east base of 

 Coast Kanpe Mountains, near 

 Mexican Boundary Line. 



.do . 

 .do. 



Mountain Spring. San Diego 

 County, California. 



do 



do 



do 



do 



do 



Jacuniba, San Diego County, 

 California. 



do 



do 



First water, at east base of 

 Coast Range Mountains, near 

 Me.\iean Boundary Line. 



Mountain Spring, !-an Diego 

 County, California. 



do 



do 



do 



Date. 



Jacumba, San Diego County, 

 California. 



do 



do 



do 



do 



Ammospennophilus leucunis in- 

 lerpres. 



El Pa'o, Te.xas 



do 



-do. 

 .do. 

 .do. 

 .do. 

 .do. 

 .do. 

 -do. 

 .do. 



1884. 

 Nov. 16 



1894. 

 May 7 



May 8 

 May 9 

 May 12 



May 13 

 May 14 

 ....do... 

 May 15 

 May 16 

 May 22 



May 24 

 ....do... 



May 8 



May 9 



May 13 

 ...do.... 

 ...do.... 



May 19 



May 20 

 May 23 

 May 24 

 ...do.... 



1892. 

 Feb. 8 

 Feb. 11 

 Feb. 19 

 Feb. 20 

 Feb. 21 



L..do... 



j Feb. 23 



I Feb. 27 



I Mar. 2 



Mar. 3 



Sex and 

 age. 



d'ad. 

 $ad. 



9 im. 

 cfad. 

 ?ad. 



9 ad. 

 (f juv. 

 9 ad. 

 J' ad. 

 cTad. 

 9 ad. 



9 ad. 

 9 ad. 

 cf im. 



9 ad. 



9 ad. 

 ''9 ad. 



''?■• 

 9 ad. 



f'9ad. 

 cfad. 

 9 ad. 

 d'ad. 



,:f ad. 

 cfad. 

 d'ad. 

 9 ad. 

 dad. 

 cT ad. 

 9 ad. 

 dad. 

 dad. 

 dad. 



mm. 

 6231 



191 

 219 

 216 



213 

 130 

 222 

 225 

 195 

 230 



217 

 220 

 199 



206 

 206 

 213 



227 

 227 

 226 

 200 

 220 

 213 

 217 

 227 

 226 

 («) 



mvi. 

 51 



70 

 42 

 72 

 74 

 c50 

 73 



73 

 75 

 61 



205 69 



228 j 69 



220 j 75 



232 73 



mm. 

 36 



37 



38.5 



40 



39 



37 

 40.5 



38 

 39 



39 

 39 



38 



40 



36 



38 



38.5 



36 



38 

 37 

 39 

 39 



37 

 38 

 38 

 35 

 40 

 37 

 36 

 38 

 37 

 37 



« American Museum of Natural History. 

 ** End of tail gone. 



cTail abnormal. 

 d Mammae five pairs. 



e Head and body, 153 mm. 



