LOL Allen, Review of the South American Sciuride. 209 
Sevurus ingramt Thomas, instead of with S. estuans as now restricted, his 
estuans being the Sciurus estuans of Wied, which is clearly the Sciwrus 
engrame of Thomas, as is evident from his reference to the absence of the 
“weisse Liangslinie langs der Bauchmitte, welche sich bei Sc. estwans 
findet.”’ 
On the other hand, Scturus gilvigularis Wagner is very closely related in 
all features to true estuans, of which it seems at best only a fairly well 
differentiated subspecies, with which it is connected geographically through 
Sciurus quelcht and S. macconnelli Thomas, which are not very clearly 
distinguishable from true estuans. 
- Pelzeln renamed the species gilviwentris, he preferring, probably for 
sentimental reason, Natterer’s manuscript name to the one previously 
published by Wagner. 
Guerlinguetus estuans macconnelli (Thomas). 
Sciurus macconnelli THomas, Ann. and Mag. Nat. Hist. (7), VIII, p. 148 (oot- 
note), August, 1901. 
Type locality — Near base of Mount Roraima, British Guiana. 
Geographic distributton.— Known only from the type locality. 
Description:— Like G. estuans estuans but upperparts possibly browner 
(brownish olivaceous), and underparts perhaps brighter or deeper orange ~ 
buff; chin and throat grayish. A buffy postauricular patch, and pelage 
longer and fuller than in either estuans, gilvigularis, or quelchit, in correla- 
tion with its different environment. 
Type unique, with an imperfect tail (only basal third present), and a 
fragmentary skull. 
Remarks.— Judging from the imperfect type specimen, the only one seen, 
this may probably rank as a local form of the estuans group, limited proba- 
bly to the basal portion of Mount Roraima. 
Guerlinguetus estuans quelchii (Thomas). 
Sciurus quelchit Tuomas, Ann. and Mag. Nat. Hist. (7), VIII, p. 147, August, 
1901. 
Type locality — Kanuka Mountains, British Guiana, near the Brazilian ~ 
boundary (59° W., 3° N.); altitude 240 to 300 m. 
Geographic distributton— Known only from Kanuka Mountains in 
southwestern British Guiana and from the Serro do Lua in northern Brazil. 
Description.— Similar to G. estwans estuans but paler both above and 
