A second specimen of <I>Euderma maculatum</I>

Vol. XVI, pp. 165-166

November

30. 1903

PROCEEDINGS

OFTHE

BIOLOGICAL SOCIETY OF WASHINGTON

A SECOND SPECIMEN OF EUDERMA MACULATUM.

BY GERRIT

^S.

MILLER,

^Jr.

[By permission^ofthe Secretary^oftheSmithsonianInstitution.]

One

ofthe

most

remarkableof

North American

_bats, thehuge- eared,black-and-white

Euderma maculatum

_(J. A.

Allen),

was

wholly

unknown

before 1890, and, ^afterits discovery, ^it eluded detection againfor thirteen _years.

The

_{original specimen,}

now

in the

American Museum

of Natural _History,

was

_captured

by

Mr.

Thomas

_Shooter, on a fence at the

mouth

of Castar Creek, near _Piru,

Ventura

County, California, ⁱⁿ

March,

1890. It remained unique ^un-

til a second individual

was found

dead in the Biological Laboratory^ofthe

New Mexico

College ^of Agriculture and

Mechanic

_Arts, at Mesilla Park,

New

_Mexico, in Septem- ber, 1903. This specimen, correctly identified,

was

_pre-

^^iJ|i^ ^m!l0^^

^{sented to the}

United

States National

Museum, _by

^Professor E. O.

Wooton.

It isanadult

male

_preserved in alcohol,

and

bears the

number

_122,545.

The

_{history of} this species ^is a

42—Proc. Biol. Soc. Wash. _Vol.XVI, ^1903. (165) Pig.1. SkullofEudermamaculatum

(x1!4).

16G Miller

—

_Specimen

_of Euderma Macvlatum.

striking illustration of the uncertainty that attends thestudy^of hats.

The

animal occurs in a region thathas _recently beenthe field of the

most

_systematic biological explorationsever carried on inanycountry, yetonly

two

individualshave been_taken,and both of these

were

_procured

by

persons notspecially interested in

mammals.

All that trained collectors have

added

in

more

than adecadetoour

knowledge

^of

Euderma

^is thevague^second-

hand

report that the

Vegas

Valley,

Nevada,

^{is visited} during hot weather by ^a large bat with _jackass ears

and

white shoulder stripes.*

Through

^{the kindnessof Dr. J.A. Allen, I} have been enabled to

compare

the Mesilla

Park

specimen withthe type. In every

way

^the individuals closely agree, even to

minute

details of size.

The measurements

of the

two

are asfollows, those of the type ⁱⁿ parenthesis: Total length, 107 (110); head and body, 60 (GO); ^tail. 47 _{(50); tibia,} 19.6 _{(21); foot, 9.8 (9);} forearm, ^49.6 (50);

thumb,

⁹ (6.8); second _digit, 42 ₍

—

); third _digit, 86 _(91);

fourth _digit, 72 _(76.2); fifthdigit, 64

(67.3); ear

from

_meatus,

41 (34); ear

from

_{crown, 43}

(—

^{); widthof ear, 25 (22); tragus,}

14 (13); greatest

width

_{of tragus.} ⁵ _(5); skull, greatest length, 18.8 (19); basal length, 18; basilar length ¹⁶ (16.5); zygomatic breadth, 10.4 _(10.9); greatest breadth of braincase

above

roots of zygomata, 9.4; greatest diameter of audital _bulla, 5.8 _(5.8);

mandible, ^12.6 _(12.7); maxillary toothrow,exclusive of incisors (alveoli),^6; maxillary toothrow, including^{incisors (alveoli), 6.8} (6.8); mandibular toothrow, exclusive of incisors _{(alveoli), 6.4;}

mandibular toothrow, including ^incisors (alveoli), 7.2 _(7.6).

The

_species hasbeen so thoroughly described that thereappear to be

no

^further _important^{characters to note.}

The

skull,

how-

ever, has never before been _figured,

and

that of thetype ^{is lost.}

North

AmericanFauna, No. 13. p. 49. October16, 1897.