128 
colour prevails, as well as on the upper side of the tarsus. The small 
adpressed hairs on the sides of the face are partly black and partly 
yellowish white ; on the chest the hairs are for the most part whitish, 
and on the inner side of the limbs rusty yellow; on the belly the 
hairs are most of them yellowish white, annulated with black. The 
tail is very long and bushy: measuring to the end of the hair, it 
exceeds the head and body in length; excepting quite at the base, 
where the tail is coloured like the body, all the hairs are black, 
broadly annulated with white, and the white on the upper surface 
forms bars or rings; these however become indistinct towards the 
apex. The ears are of moderate size and rounded. The heel is 
rather sparingly clothed with hair. 
The skull of this animal is remarkable for its oblong-ovate form, 
and for having the ant-orbital foramen further back than usual ; it 
opens indeed directly into the anterior root of the zygomatic arch, 
and is not in the form of a longish canal, such as we observe in other 
Squirrels. The nasal portion of the skull is short and broad, and the 
nasal bones correspond; the elongated form of the cranium is due 
to the greatly produced hinder portion: the antero-posterior extent 
of the extremely oblique bony plate forming the anterior root of the 
zygomatic arch is great: the post-orbital process is well-developed : 
the palate terminates very nearly in a line with the hinder part of 
the posterior molars. The incisive foramina are moderate. The au- 
ditory bulle are rather small. The incisors are strong and very deep 
from front to back. The molars are small in proportion to the skull. 
The dimensions of the skull are, 
P in. lin, 
Potallength |. visconti) Sphoowraenn aioe poliasid W20kD 
Greatest widtlehis? sx sistktoe tins Brueseh rpg aire ae 1 64 
Width. between ‘onbitse .i.i,<aicin sdkyearcits >! Fi ey Oe. 0 103 
Length from post-orbital process to occiput.......... 1 4 
rd) AY ans en Oe eT SESE ene eS 12 
from front of the incisors to the first molar.... 0 11 
Longitudinal extent of the four molars.............. 0 6 
Leneth of nasal bones 76 fxs whayt sty are mee bere tis read rs 0 83 
lest __ Scrurus Ruro-Bracuiatus. Sc. pilis mediocriter longis, subrigidis, 
nigro et flavescenti-penicillatis ; corpore subtis sordide flavo vel 
Pes: rufescenti-flavo ; artubus infra rufis ; caudd longa, non valde floc- 
Brn La NP cosd, annulis nigris et albis, vel flavescenti-albis, ornatd, ad basin 
Aiea \ Wow yun plerumque rufescente ; auribus parvulis ; dentibus incisoribus lon- 
gitudinaliter subsulcatis. 
a 
2 N ; unc. lin. 
Ths 2 Longitudo ab apice rostri ad caude basin.... 8 6 
fan tous: Te SSS tee die cde, a aaa 10 6 
. a tarsi digitorumque.......+2..+-+ eo ae 
QUITS iis ows lark ete is eemenr eee 0 44 
Hab. in Insula Fernando Po. 
a! This species approaches very nearly to the Sciwrus annulatus of 
ES authors, but is distinguishable by its richer colouring. ‘The general 
OFS. (943 [Usd 
_ 
