202 Merrlam — The Chlpmniiks of the GentiM Eataiiiias. 



Characters of the 4 subspecies of Eatanilas specUtsus. 



Eutanilas speciosas (Merriaui) is the smallest and shortest-tailed mem- 

 ber of the series. In ordinary i>elage it is the grayest of the group, and 

 in all i>elao;es the tail is deep rich fulvous above and below, and the fulvous 

 of the upper surface is only partly hidden by the l)lack tips of the hairs. 

 Tlie facial stripes are strongly marked and the post-auricular i)atches 

 whitish and well defined. 



Ealamias speciosas f rater (Allen) is considerably larger than tme speclo- 

 sus; the fulvous of the sides (below the external-lateral stripe) is brighter 

 and more extensive ; the tail, particularly the upper side, is paler fulvous, 

 the black tip is shorter, and the edges and tips of hairs on the upjier sur- 

 face are grayish instead of deep yellow. 



Eutamias speciosus inyoeiisis {noh.) is about the same size as /ra/er and 

 has the longest tail of any member of the group. The l)lack tip of the 

 tail is short, like that offraier, but the fulvous of the upj^er side is much 

 deei)er and richer. The subspecies differs from all others in having the 

 facial stripes less pronounced, the post-auricular patches indistinct, the 

 back of the neck largely gray, the median dorsal stripe black, and the inner 

 pair of light stripes grayish white. It agrees with callipeplus and differs 

 from all the others in having the rump grizzled golden yellowish instead 

 of gray. 



Eutamias speciosus callipeplus (Merriam) is the largest of the group. It 

 agrees with inyoensis and differs from all the otliers in the grizzled golden 

 yellow (instead of gray) of the rump, and the unusual amount of bright 

 rufous in the upper side of the tail. The whitish post-auricular patches 

 are larger and more clearly defined, and the yellow edging of the tail 

 more extensive than in any of the others. In the typical form (from Mt. 

 Pinos) the Ijlack tip of the tail is short ; in the Sieri'a form it is long — and 

 this is the only difference I am aljle to detect between the two colonies. 

 We have no specimens from Mt. Pinos in post-breeding pelage, but sjjeci- 

 mens in this pelage from the west slope of the >Sierra dilfer from frater in 

 the same pelage in having the {)ost-auricular ])atches better defined; the 

 dark facial stripes darker and sharper and the white ones whiter; the 

 inner pair of light dorsal stripes more obscured by fulvous; the rump 

 yellower; the ears longer ; the tail larger and more bushy, edged with 

 deep yelloin instead of grayish or i)ale yellowish, witli the ujiper surface 

 very much deeper and richer fulvous. Eutauiias speciosus callljK'pIus in 

 post-breeding pelage resembles E. (juudrimacuUUus in corresponding pel- 

 age, but differs in smaller size, shorter ears, very much brighter tints ; in 

 smaller, grayer, and less sharply defined post-auricular patches ; broader 

 external white dorsal stri|)es; blacker ant-orbital i)art of eye stripe; and 

 yellowish instead of hoari^ tips to the hairs on the upper side of the tail. 



