258 vu. s. P. R. R. EXP. AND SURVEYS—ZOOLOGY—GENERAL REPORT. 
legs, the sides of the head, the anterior portion of the ears, the anterior and posterior edges of 
the fore limbs externally, a narrow line across the flanks, and the exterior surface of the hind 
feet extending a short distance up on the leg, are of a yellowish brown; the fore feet are 
grayish; the whole under parts are clear white tinged with ashy posteriorly, the hairs being 
uniform white to their bases. Above, the hairs are dark lead color at base, then light brownish 
yellow, then black and tipped with ashy white, except where the yellowish brown markings are- 
seen, when this color forms the tip. 
The tail is rather flat and distichous, not bushy ; viewed from below, the hairs extended, the 
ground color is brownish yellow, with three narrow and well defined lines of black on each 
side, margined for rather more than one-fourth with white. The inner black line is ‘some 
distance from the central line of the tail. The upper part of the tail has the hairs as on the 
sides, with perhaps fewer annulations, and a few interspersed which are black except at tip ; 
the prevailing tint above is a mixed heavy black and yellowish brown. 
Another specimen agrees in every respect, except that the ground color of the tail is darker. 
Measurements. 
Washington, D. C. Washington, 
Nov. 16, 1854, fresh. 
Inches. Lines. Inches, Lines. 
NORD ILOVOCCID Ut a Meier = ea a oan ee a eee aoa e me ae Sele 2 7 2 6 
LOVE YC)2e em ee ee es awe ee weak ee ces ese a PUES eee eee eseeooseae 1 7 pala tp be mem 
OTOH oo ee ee oS ee oe ee, oe ere ee eres Sees See nee en | 2 y Seal PR es 
fo'root of ‘tall. sis. sstseuss asad s je saecssS coc ce Se seth essesee 10 3 oe) SS eee 
tong of outstretched hind Weps) 22 2225 = Slee oe oe oe ee eee 16 LO eee esioc oc 
Tail from zoobitotendiof ‘vertebra teases oso o node een cen ee eenk ae 7 6 8 6 
from root to endvot halts. cassceen= ces s-acee eee eee eese ear eee ae 10 6 1l 4 
Preatestiwidth Saco atte eet ee ee a oaeeensee a eee ee one ee Sos soeeehen | Saee epee 4 
Mars sheene MOSsStenlOrl vis ..c2 tase ce cen e en oe sas ee eee 1 YR Peco riieers poo ee 
NEM MARLenON yy 2 s—s ees aos nee ae ee eee ow eee eee 1 | Sea ees 
Anbetnaliy AO VE SKU oes nae sae ee ee ae ne ent ecm ee 1 yal a ee 
above the sheade-ce fessor oe ab oct eek cote see one cee cocee eee lene ee eee ae eee eee Se eee 9 
greatest height externally from bottom of lowest notch.....--.-----|-----.----|---------- u 2 
WIG th eeia pinnae ae ao eee See kbee esac dm eccecmsccneslacaneceeee | Sees elses Soc 5 
ATM sDeuveen Claws; ACTOSS BNOULGCY oe oo on-scene noo ances ence aene | Bee es eee oe mess 
length oftforeatm=t 2502225 ces owen ccccce saccccceonscnsdossseence 2 1 Ug ee Es 
fromelbow to end)ofaclawas 2-222-o28h sib asda a ese cetne ec s5 5k 2 3 See ee ae aa 
and from wrist. =: < -ivananeine cb aodantaccencky -cesecuch loaned s| ae seeee as eee ee 1 8 
fareroorito end woMelwees ee semen Senne tome eee a ee one eee 1 en Peete ees —- =- 
IonPesticla wi. ctecuas ce fees ata seco ee a te cine em eae CaS mem mie | eet mates re Preyer ee a a 
opr iicom iknee jointito ‘end of claws .-.222.- cf. 20. Jel ee ee 5 2° ||l St oe eae 
MDA ian Sone Saad Sea ash odes thse cth de aeue alee eeasee eee acer 3 2:6 olNisecwe oe oo 
hindfoot from heel to endiof claws... ....-----«e-=2---oh—-Sensern ne 2 5 2 6 
DONE PSU ICIAW = wenn a san in ene scmacecces sao oca rss emeems ane ae eee eel ebecces ce ee eee ee 
DOVES) tray EM eRe CPS SS ee see sae Seal h Sa ecoeog Poser aag berinccona 10 
Widthrothead between Zycomata <2 -ss2s5 sess. Reset Soe. ee se ee aL eae cs- | oo eeeaes 1 4 
In the preceding portion of this article I have described, at considerable length, fresh speci- 
mens of the common gray squirrel of the United States. As is well known, Dr. Bachman has 
