Description of a new bat from Colombia

Vol. XV, ^{pp. 151-152}

June

20, 1902

PROCEEDINGS

OFTHE

BIOLOGICAL SOCIETY OF WASHINGTON

DESCRIPTION OF A NEW BAT FROM COLOMBIA.

BY MARCUS W. LYON,

^JR.

The

writer has recently

had opportunity

^to

examine

a fine series of skins

and

skulls of

Vamjoyrops

lineatus collected

by Mr. Wni.

T. _Foster,, in

Paraguay,

^the

type

locality of the

species.

A _comparison

of the

Colombian

_bat,

_previously

as-

sumed

to

be

V. lineatus*

with

these topotypes,

shows

the

former

to

be

specifically distinct,

though

closely related ^to true lineatus.

Until now, apjmrently no name has been proposed

for the

Colombian

bat.

Vampyrops umbratus

^neAvspecies.

Type from San _Miguel, Colombia. No. 8180, Bangs' ^{Collection in}

Museum

ofComparativeZoology. Skinandskullofadult male, collected

June

8, 1898,by

W. W.

Brown, ^Jr. OriginalNo. 234.

Generalcharacters.

—

Alliedto

Vampyrops

lineatus (E. Geoffroy); differs inhaving^alargerskull,darkercoloration

and

with the _light markings onthe face

and

backlessclear andlesssharply^defined.

Bescnptionoftype.

—

Color above, seal-brown (Ridgway), ^{bases of the} hairs

somewhat

_lighter, approaching ^a dark hair- or broccoli-brown;

below, practically the same, but ^duller

and

a little lighter.

A

fine whitishlineabout1

mm.

inwidthrunsfromthe

back

oftheneck _along themiddleofthebacktotheedge^ofthe interfemoral

membrane. The

*Robinson and Lyon, ^{Proc. U.S.} Nat. Mus.,

XXIV,

p. 149, 1901.

27—BIOL. SOC. WASH.^VOL. XV, ^1902. (151)

152 Lyon — A Nev^ Bat from ^Colomhia.

faceis

marked by

^twostripes of lightbroccoli-brown1-1.5

mm.

inwidth, oneon eachsideextending from the posterior base ^of thenose-leaf,

up

over the_{eye, to}nearly ^{as far}backasthe occiput.

The two

lower face markings from eachangle^ofthe

mouth

toeachear,are scarcely^definable.

Haircovers the forearmabove forabouttwo-thirdsitslength, extend- ing outon the

membrane

forabout5

mm. The

undersideoftheforearm

isscantily covered withshort hairs foraboutthe

same

distance and the hairextendsabout10

mm.

^onthe

membrane.

Interfemoral

membrane

scantilycoveredabove and_below, withhairslikethose onthebackand

bell}', the hairsforminga fringeon the posterior border. Tjcngth ^of hairon back 8

mm.,

^onbelly 5

mm.

SfcuU.

—

Likethat of Vamiiyrops^lineatus, but_larger in every

way ^and

withheavierteeth.

The

last upper molar ^is different in shape, being disproportionately wider, fromside to side, thanthe

same

tooth in V.

lineatus.

Measurements _{of type.-}

— _(The

_{figures in}

parenthesis are those ^of an adult specimen from Paraguay:

Wm.

T. _Foster,No. 801). Forearm, ⁴³

(46): longestfinger, 104_(102); tibia, 15_(17); calcar, 5(7); foot, 12_(12);

greatestlengthof skull, 27.2 (25); zygomatic breadth, ^15.6(15); front of upper^{canine to} posterior edge ^{of last} upper molar^10.4(8.2); width of last uppermolar, ^1.2(0.8); distancebetweenouter angles^ofsecond upper molarsat alveoli, 11.2(10.4); greatestlength^ofmandible, ¹⁸(17).

Remarks.

— _Vampyrops

umhratus needs comparison with no other species than lineatus. It is darker throughout, has a slightly smaller body anda distinctlylarger^skull.

The

color of lineatusisa broccoli- or hair-brown, incontrasttotheseal-brownofnmbratus.

The

_stripe

down

the

back

of lineatusispure white

and

from

two

tothreetimes thewidth ofthewhitish_stripe

down

the back of umhratus.

The

face _stripes in lineatus are white and distinct, in umhrntus they^{are a} light broccoli-

brown

and ill-defined, especially the lower markings.

The

nose-leafs and ears

show

no apparent differencesinthe dried skins of the

two

species.

Vaynpyrnps ttmhratus ^is represented by three specimens, ^{all in} Bangs' Collectionin

Museum

ofComparative Zoology: the type. No.8180, from

San

_Miguel, No. 8300, from SanAntonio, and No. _8301, from Palamina, Colombia.

The two

latterare_entirely uniform with _{the type} in point of size and coloration. Unfortunately they ^{are not} accompanied

by

skulls.