General tone of upper parts grayish; cheeks and underparts
white, more or less dulled by gray; size large; skull large.
Baculum: Shaft thin; keel low, 2/5 of length of tip; tip 16 per cent of
length of shaft; angle formed by tip and shaft 130 deg.; distal 1/10 of
shaft slightly compressed laterally; base incised dorsally; shaft
markedly long, 4.88 mm.
Differs from _E. speciosus_, _E. panamintinus_, _E. umbrinus_, _E.
palmeri_, and _E. bulleri_, in base incised dorsally, base not widened,
shaft thinner, tip proportionally shorter; from _E. quadrivittatus_, _E.
ruficaudus_, _E. cinereicollis_, and _E. quadrimaculatus_, in base
incised dorsally, shaft thinner, tip proportionally much shorter.
For comparisons with _E. alpinus_, _E. minimus_, _E. townsendii_, _E.
sonomae_, _E. amoenus_, and _E. dorsalis_, see the accounts of those
species.
_Specimens examined_: One from Mount Pinos, Ventura Co.,
California (LA).
#Eutamias quadrivittatus# (Say)