mammals of san jose island

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SMITHSONIAN MISCELLANEOUS COLLECTIONS

VOLUME

106,

NUMBER

7

MAMMALS OF SAN JOSE ISLAND, BAY OF PANAMA

BY

REMINGTON KELLOGG

Curator, Division ofMammals U.S.NationalMuseum

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(PUBUCATION 3851)

CITY

OF WASHINGTON

PUBLISHED

BY THE SMITHSONIAN

INSTITUTION

JULY

18, 1946

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SMITHSONIAN MISCELLANEOUS COLLECTIONS

VOLUME

106,

NUMBER

7

MAMMALS OF SAN JOSE ISLAND, BAY OF PANAMA

BY

REMINGTON KELLOGG

Curator, Division ofMammals U.S.NationalMuseum

(Publication 3851)

CITY

OF WASHINGTON

PUBLISHED

BY THE SMITHSONIAN

INSTITUTION

JULY

18, 1946

(4)

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^Both (giafttmore(pnee

BALTIMORE, HD.,U.B. A,

(5)

MAMMALS OF SAN JOSE ISLAND, BAY OF PANAMA

By remington KELLOGG

Curator, Division of Mammals, U. S. National

Museum

Included in the collections

made

by Dr. A.

Wetmore,

Secretary of the Smithsonian Institution,

and by

Dr. _J. P. E. Morrison, of the Division of Mollusks, United States National

Museum, on San

Jose Island, Archipielago de las Perlas, in the Golfo de

Panama,

are ^6 specimens of

mammals,

representing 9 ^species

and

subspecies.

Bangs (Amer.

Nat., vol. 35,

No.

416, pp. 631-644,

August

1901 ;

Bull.

Mus. Comp.

Zool.

Harvard

College, vol. 46,

No.

8, pp. 139- 140,

September

1905)

and Goldman

(Smithsonian Misc. Coll.,vol. 69,

No.

5,

309

^pp., 39 ^pis., 1920) have recorded the

mammals known

to occur on Isla del

Rey (San Miguel

Island),

and among them

the following eight kinds have not as yet been taken

on

the nearby

San

Jose Island^:

Marmosa

fnlviventcr Bangs, Didelphis marsiipialis par-

ticeps

Goldman,

Sylvilagusgabbiincitatus (Bangs),

Diplomys

labialis (Bangs),

Mus musculus

Linne, Rattus rattusrattiis (Linne), Rattus rattus alexandrinus (Geoffroy),

and

Carollia perspicillata

astecum

(Saussure).

Goldman

(1920, p. 199) has pointed out that the bat erroneously identified

by Bangs

(1901, p. 644) ^as

Vampyrops

helleri is actuallya specimen of

Uroderma

bilobatum.

Order CHIROPTERA

Family EMBALLONURIDAE

SACCOPTERYX BILINEATA BILINEATA

(Temminck)

:

Greater White-lined Bat

Ten

specimens of this small blackish-brownbat,

which

is character- ized in part by a pair of whitish longitudinal dorsal stripes,

were

taken

by

Morrison.

One was

collected

on March

i, eight

on May

28,

and

one

on

July 2, 1944. All the specimens are females

and

are

presumably

adult,withthe exceptionofone half-grown young.

These

specimensrange in total length

from

62.5 to 78

mm.

^; forearms

from 44

^to

49 mm.

SMITHSONIAN MISCELLANEOUS COLLECTIONS, VOL. 106, NO. 7

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2

SMITHSONIAN MISCELLANEOUS COLLECTIONS

VOL. I06

Family PHYLLOSTOMIDAE

MICRONYCTERIS MICROTIS

Miller: Nicaraguan Small-eared Bat

Of

the 22 specimens of this small rusty-brown bat collected by Morrison,

4 were

^taken

on May

8, 2 on

May

13, 12 on

May

21, I

on May

28, 2 on _July 26,

and

i on

August

i, 1944; ^{12 are} females

and

10 are males.

The

individuals in this series vary in total length

from

₅₅ to 67

mm.

^; forearms

from

33.5 to yj

mm.

ARTIBEUS JAMAICENSIS JAMAICENSIS

Leach: Jamaican Bat

Four

specimens of this large bat are contained in the collection

made

by Morrison,

and

of these only one

(U.S.N.M. No.

_277176) has a readily discernible pair of whitish stripes on the top of the head between the nose leaf

and

the ears.

On

the other three bats thesestripesareeither lackingor ratherindistinct.

These

four females vary in total length

from

80.5 to 85.5

mm.

^; ^forearms

^from

59.5 to 61.5

mm. Three were

taken

on August

22

and

one on

August

_23, 1944.

URODERMA BILOBATUM

Peters: Yellow-earea Bat

The

yellowish ear margins of the four bats collected by

Morrison were

very noticeable

when

the collection arrived in

Washington,

but faded towhitish after the bats

were

transferred to 75 ^percent ^alcohol.

All four specimens have the' characteristic pair of white stripes extending

from

the nose leaf to the inside of the ear

on

the crown,

and

a singlewhite stripe

on

the side of the face running

from

below theeyetothe tragus.

The two

females have dark

wood-brown

upperparts, witha longitudinal white stripeextending

from

the

nape

tothe

rump. The two

males, however, have fuscous-brown upperparts, with the longitudinal white stripe

commencing

behind the shoulders

and

endingat the

rump. One

specimen

was

collected on February 20, the others on

September

12, 1944.

They

range in total length

from

55.5 ^to 61

mm.

^; forearms

from

40.5 to 42.5

mm.

Order EDENTATA

Family MYRMECOPHAGIDAE

TAMANDUA TETRADACTYLA CHIRIQUENSIS

_J.A. Allen:

Three-toed Anteater

The immature male was

shot

by Wetmore

in

March, and

the

two

adult females

were

obtained by

Morrison

in

August

1944.

The two

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NO. 7

MAMMALS

OF

SAN

JOSE

ISLAND KELLOGG

₃

females measured, respectively: Total length, 995,

990 mm.

; tail,

495, 498; hind foot, 90, 88.

The measurements

for the skulls of the

two

femalesare, respectively: Occipito-nasal length, 117.5, 113.8;

tip of maxillary to hinder face of occipital condyle, _113, 108; antorbital width, _31.5, 30.5; length of nasals, 43.4, 41.8.

Reeve

(Proc. Zool. Soc.

London

for 1942, ^vol.

in,

ser. A. _{pp. 297,} 301⁾ has questioned the validity of this geographic race

and

has presented statistical data to support his conclusion that the

Panamanian

specimens on tlie basis of skull i^roportions cannot with certainty be distinguished

from

British

Guiana

fetradactyla.

For

these

San

Jose females, the ratio to occipito-nasal length of nasal length is, respec-

tivef\', 36.7

and

36.9.

For

specimens of cliiriqiiensis

from

the mainland ^of

Panama, Reeve

gives ratios varying

from

37.8 to 41.5.

The

ratio to occipito-nasal length of antorbital breadth for the

San

Jose females is, respectively, 26.8

and

26.7,

and

the corresponding ratios cited by

Reeve

for mainland specimens range

from

26.0 to 29.1.

The

corresponding ratios for specimens

from Gatun

((^,

U.S.N.M.

No.

171077)

and

Porto Bello _($,

U.S.N.M. No.

171482) ^are only slightly greaterthanthose

computed

forthe

San

Jose females. Speci-

mens

of fetradactyla

from

British

Guiana were

not available for comparison.

Family ECHIMYIDAE

PROECHIMYS SEMISPINOSUS IGNOTUS

^Kellogg:

San Jose Island Spiny Rat

Since

San

Jose Îsland îs ônly about 7 miles distant

from

the Isla del Rey, it

would

be expected that the

same

general climatic condi- tions should prevail on both islands, but nevertheless the series of spiny rats taken

on San

Jose is noticeably darker than the race

on

the larger island.

Skins

and

skulls for

two

adult females, four adult males,

and two

juvenile males, as well as three

young

inalcohol

and

three

odd

^skulls,

were

collected by

Wetmore and Morrison

during

March, May, and

June, 1944.

Order ARTIODACTYLA

Family CERVIDAE

MAZAMA PERMIRA

Kellogg: San Jos§ Island Brocket

Several officers

and men

of an engineer detachment,

when

^off

duty, hunted deerfor sport,

and

through their cooperation five speci-

mens were

obtained.

Kay

L.

Thurman

presented an adult female

and

a male

fawn which

he

had

killed on

August

15, 1944.

The

skin

and

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4 SMITHSONIAN MISCELLANEOUS COLLECTIONS

VOL. Io6

skull ofan adult male,

which had

been killed

on September

24, 1944, by a party consisting of C. F. Jones,

W. N.

Collins,

and

Robert Carder,

were

preserved by Morrison.

A

nearly complete skeleton ofa

male

that

had

beenshot

and

lost

was

picked

up by

Morrison,

who

also received a female

fawn from

another hunting party.