MAMMALS OF rill-: MEXICAN BOUNDARY. 



k J ( .>7 



Record <m<l measurements of 22 specimens of Eutamias merriami. 



Museum 

 number. 



61134 



61135 

 61136 

 61137 

 C1139 

 61140 

 C.llll 

 61142 

 till 13 

 till 11 

 01140 

 r8261 

 c8250 

 60843 

 c8252 

 -■8253 

 •■N255 

 61152 

 C8256 

 C8257 



61134 



3633 

 363 1 

 3635 



3647 

 3652 

 3653 

 3654 

 3655 

 3056 

 3658 

 3660 

 1403 

 1469 

 1470 

 .. 1471 



6597 1485 

 01152 1 ISO 



6598 1 488 

 1489 



01135 

 01130 

 61137 

 61139 



01140 

 C.llll 

 01142 

 01143 

 61144 



onio 



030*4 

 0593 



00843 

 6595 



Locality. 



Sex and 

 age. 



1894 

 May 



3032 



Mountain Spring, east slope of 

 i ioast Range, I lalifornia. 



Jacumba, San Diego County, Cal- May 

 ifornia. 



Laguna, Coast Range, San I»iep> June 

 County, California. 



... .do ', <li> 



....(In <iO 



do do 



do rune 



do Fune 



.do 



.do 

 .do. 

 .do 

 .do, 



.do. 



.do. 



.do. 



.do. 

 .do. 



.do rune 



.do June 



.do lime 



.do 



.do 

 .do 

 .do 

 .do 



.do 



...do 

 ...do 

 June 

 ...do 

 June 

 ...do 



a ' ad. 



' ad. 



6 , ad. 



bo. ad. 



; n.i. 



' ad. 



ft i ad. 



5 ad. 



5 ad. 



'> v ad. 



b$ ad. 

 f>? ad. 



! JUV. 



6 J ad. 



'., ad. 



' a.l. 



9 ad. 

 9 ad. 

 c? ad. 

 9 juv. 

 9 ad. 

 9 ad. 





mm. mm. 



mm. 

 34 



211 109 36 



260 

 254 

 250 

 257 

 251 

 250 

 21 ill 

 257 

 257 

 251 

 250 

 239 

 252 

 258 

 262 

 247 



247 

 20.0 



113 30 



111 38 



121 

 124 



lis 



37.0 



III 

 30 



120 36 



124 30.5 



mm. 

 11 



17 



15.5 



15 



15.5 



]:; 



13 



L6 



16.5 



15 



13 



13 



15 



15 



10, 



17 



15.5 



13 



« Head and body. 130 mm. 6 Mammae, 1 pairs. c American .Museum of Natural History. 

 Genus AMMOSPERMOPHILUS Merriam (1893)." 



Ammospermophilus Mebbiam, Proe. Biol. Soc. Washington, VII. p. -7. 

 April 13, 1893. 



Type. — Tamias leucurus Merriam. 



Characters. — Dorsum with one longitudinal stripe on each side: 

 external ears considerably more developed than in Citellus citellus 

 (Linnaeus), but less so than in Callospermophilus; mammae, 5 pairs; 

 tail, cylindrical at base, flattened and bushy on terminal two-third-: 

 skull similar to that of Eutamias, but higher and more flattened 

 posteriorly, with relatively shorter and thicker rostrum, narrower 

 palate, heavier dentition, and larger audital bullae. The skull dif 

 fers even more from Citellus in being relatively narrower, flattened 

 above and elevited posteriorly, with audital bullae high and com- 

 pressed laterally, and in having the first premolar a ninth smaller, 

 simple, peg-like tooth. 



" The generic name Spermophilus, s<» long in general use for tlit> ground-squir- 

 rels or Spermophiles, lias given place t<» the older name Citellus, and three of 

 its subgenera have been raised to the rank of genera. 



