348 
NATURAL HISTORY , . 
These are followed by three true molars. 
some distance from the hindmost incisors, the lower ones close to them (see figure). Behind the 
canines there are on each side in both jaws three premolars, which increase in size backwards. 
The bony orbit is a complete ring, and the zygomatic arch 
is also complete, but perforated by an elongated aperture. 
The ears are of moderate size, and rounded ; the eyes large 
and prominent ; and the tail long, and well clothed with 
hair throughout its whole length * in fact in most species 
it is a bushy organ like that of many Squirrels. 
In the Tana ( Tupaia tana) the arrangement of the 
hair on the tail in two rows, something after the fashion of 
the barbs of a feather on the shaft, which is more or less 
recognisable throughout this genus, is especially remark- 
able ; and as the hair is very long, the tail is rendered 
particularly bushy. This animal is one of the larger 
species, the body measuring from eight to nine inches in 
length, and its colour is rather variable, although usually 
exhibiting various shades of reddish-brown, becoming 
darker or blackish on the hinder part of the back, where, 
moreover, the greater part of the hairs are of uniform tint and not grizzled. The colour of the tail 
appears to be especially liable to vary — thus, according to Dr. Gunther, in the ordinary form of the 
species the tail is black above, with the basal half of each hair rusty brown, and dark brown below ; 
in another variety, described by Wagner as a distinct species under the name of T. speciosa, the tail 
is brownish-red above, and bright rusty-red below; whilst in the beautiful form from which our 
DENTITION OF FERRUGINOUS BANGSRING. 
(Twice Natural Size.) 
TANA — GOLDEN- J AILED VARIETY. (Half Natural Size. From the Proceedings of the- Zoological Society.) 
illustration is taken the whole organ is of a reddish golden-yellow colour. This is Dr. Gunther’s 
variety, chrysura (golden tail). 
The Tana is an inhabitant of the forests of Sumatra and Borneo. According to Sir Stamford 
Raffles, the animal is known to the country people of Sumatra under the name of Tupai tana> and he 
was informed that it was always found on or near the ground. A nearly allied but much smaller 
species ( T. sphndidula of Dr. Gray) occurs with it in the last-named island ; and another larger one 
( T nicobarica) is found in the Nicobar Islands. 
