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(1)

Vol.

XV

pp. 81-82

April

25, 1902

PROCEEDINGS

OFTHE

BIOLOGICAL SOCIETY OF WASHINGTON

A NEW RABBIT FROM SOUTHERN TEXAS.*

BY GERRIT

S.

MILLER,

Jr.

The

cottontail of the tropical

region

of

extreme southern Texas

differs

from

the races inhabiting the

neighboring

portions ofthe

lower

austral life zone,

and

is equally distinct

from

the

Mexican

rabbits thus far

known.

It

may

therefore

be

de-

scribedas:

Lepus

sfmplicicanus sp. nov.

Type.

From

Brownsville, Texas, No.

fHol

United States National

Museum,

9 ad. Collected October19, 1891 byF.B. Armstrong.

Characters.

In size

and

general appearance not unlike Lepus chap-

mani

from Corpus Christi, Texas, but fur everywhere

much

shorter;

color essentially similar,butgrizzle ofhead

and

anterior portionof

body much

lesscoarse,

owing

tothereduced lengthof the pale ring

on

each hair.

Color.

Back

afine grizzle of blackandcream-buff, thelatter slightly in excess.

The

elements of the color are almost exactly as in Lepus

chapmani

except that the cream-buff is slightly

more

yellow, but the grizzleislesscoarse

owing

tothefactthatbothpale ringsand darktips average about 1

mm.

shorter. It is partly due to the different quality

Published

here by permission of the Secretary of the Smithsonian Institution.

18-BiOL. Soc.

Wash.

Vol.XV, 1902. (81)

(2)

82

Miller

— Neir Rahhit from Southern

Texas.

ofthefur,theresultofthefiner,shorter hairoftheBrownsville animal.

Sidesand

rump somewhat

paler than back, but without forming- anj^

distinct contrast.

Head

and ears colored as in L. elunmiani, but here again the

much

shorter hairs

and

narrower color bands producea very differentgeneraleffect,auniform,clear,yellowishgraythatcanscarcely be calledagrizzle,

and which

lacks theclouding onforeheadand cheeks

due

tothe longblackhairtips. Ears

much more

scantily haired than intheallied races, the hairsformingtheinconspicuousfringe along an- terior border only 4-5

mm.

in length.

Nape

patch rufous, a shade lighterthan inL. cJiapmani. Feet, tailand underpartsessentially as in L. chapmani, exceptthatthe rufoustintsare

more

dulland the shorter hairof the belly allows the

plumbeous

basestoappear

more

noticeably

atsurface.

The

plumbeous, however, isoflessextentthaninchapmani.

Skull

and

teeth.

— The

skull

and

teethdonotdifferfrom those ofLepus chapmani.

Measurements.

External

measurements

of type*: total length, 420;

tail vertebrae, 68; hind foot, 91; ear, 90.

Measurements

of an adult male fromthe type locality*: total length, 416; tail vertebrae, 60; hind

foot,87; ear, 76.

Specimens examined.

Two

skins and four skulls, all from the neigh- borhoodof Brownsville.

Remarks.

While

thisrabbit isreadilydistinguishablefrom itsnearest geographicalally, Lepus chapmani, itscharacters areinthe qualityofthe fur

and

the arrangement of the colors on the individual hairs.

The

actual tints are almost exactly the

same

in the

two

animals, yet the Brownsvillerabbitisanunusiially well defined form.

*From

freshspecimensbycollector.

Referensi

Dokumen terkait

Clutch size and parasitism of the Texas spotted whiptail, Cnemidophorus gularis Sauria: Teiidae, from south- central Texas.. Gaudin, Anthony J., see Koller, Ronald

The countr}' under consideration in the present paper extends north of Tucson eighty miles, and southfort}' miles; and, taking the iiith meridian as a median line, twenty-five