A new Nataline bat from the Bahamas

Vol. _XVI, pp. 119-120

September

30, I9C3

PROCEEDINGS

OF THE

BIOLOGICAL SOCIETY OF WASHINGTON

A NEW NATALINE BAT FROM THE BAHAMAS.

BY GERRIT

S.

MILLER,

^Jr.

[By permission^ofthe SecretaryoftheSmithsonianInstitution.]

While accompanying

^the

Bahama _Expedition

of the

Geo-

graphical Society" of

Baltimore, Mr.

J.

H. Riley obtained four specimens

^{of a nataline bat} easily distinguishable

from

the species hitherto

known. They ^{were taken}

^ina

^{cave near} Sandy

Point, ^atthe

southwest corner

of

Watlings

^Island.

The animal

may ^{be known}

^as:

Chilonatalus tumidifrons, sp. nov.

Type.

—

Adult

male

(in alcohol) No. 122,024 United States National

Museum.

Collected

on

Watlings Island,

Bahamas,

July 12, 1903,

by

J. H. _{Riley. Original}

number

^157.

Characters.

— Not

assmall as Chilonatalusmicropus

and

C.brevimanuSi but forearmofaboutthe

same

_lengthas inthe related_species. Frontal gland extending from middle^of forehead nearly^to end of muzzle,

and

rising 5

mm.

abovelevelof eye. Skulland teethessentiallyasin Chilo- natalus micropus,but.essdiminutiveinsize.

Externalform.

—

_Except forthe_slightdifferencein_size,the external ap- pearance ^ofChilonatalus tumidifrons ^is closelysimilarto that of C. mi- cropus.

The

_forearm, however, ^is relatively shorter,

and

the ears are

more

evenly rounded^offabove. Lips

and

muzzleas inthe related _spe-

31—Proc. Biol. Soc.

Wash.

Vol. XVI, ^1903. (119)

120

Miller

— A New Nataline Bat from

^the

Bahamas.

cies, exceptthat projectionabovenostrilsisnarrower. Penis less than half as long ^as foot,

and

readilyconcealed

by

surrounding^fur.

Mem-

branesin no

way

peculiar. Frontalgland^{at leastfour}timesaslarge as in CJtilonatalusmicropus,

much

_longer

and

higher than^{wide. It}extends from _{a point}

on

forehead_nearlylevelwithmiddleof proencephalon^to within3

mm.

^ofnostril, adistanceof about 8

mm.

^Itsgreatest width

is3.8

mm.; ^and

^itsheight,

measured from

cornerof eye ^{is a little over} 5

mm.

Itssurface^isfinelyrugose,

and naked

_exceptfora sprinkling of

minute

hairs.

Color.

— The

furiseverywherecream-buff, that of the bellyclear

and unmixed

with brown, ^{that of the}

back

clouded with broccoli-brown.

Ears light yellowishbrown, darkening ^at edges.

Membranes

dark brown.

Skull

and

teeth.

— _Except

fortheir greater^sizethe skull

and

teeth

do

notdifferappreciably fromthoseof Chilonatalus micropus.

Measurements.

—

_Type: total length, 87; head

and

_{body, 40; tail, 47;}

tibia, 18; foot, 7; forearm, 32; firstdigit,5; second_{digit, 34;} third_digit, 65; fourthdigit, 48; ^fifthdigit, 49; earfrom meatus,14; ear

from

_crown,

11; width of ear, 16; skull,greatest length, ^15.8; basal length, 14; bas- ilar length,13; zygomatic breadth, ^7.4; greatest breadth of braincase, 6.6; mandible, ^11.4; maxillary toothrow exclusive of incisors _(alveoli), 6.8; mandibular toothrowexclusiveof incisors (alveoli),^7.

Specimens^examined.

— _Four

_(twoskins), allfromthetypelocality.