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FIELD COLUMBIAN MUSEUM

PUBLICATION No. 90.
ZOOLOGICAL SERIES. VOL. Ill, No. 15.

DESCRIPTIONS

OF

APPARENTLY NEW SPECIES AND

AND

A NEW GENERIC NAME PROPOSED

BY

D. G. ELLIOT, F. R. S. E., ETC.

CHICAGO, U. S. A!

March, 1904.

DESCRIPTIONS OF APPARENTLY NEW SPECIES AND

SUBSPECIES OF MAMMALS AND A NEW

GENERIC NAME PROPOSED.

BY D. G. ELLIOT, F.R.S.E., ETC.

FAM. SCIURID^.
CITELLUS.

Citellus *nesioticus, Sp. nov.

Type locality. Santa Catalina Island, California.

Geogr. Distr. Santa Catalina Island, Santa Barbara Islands,
California.

Genl. Char. Color very dark, with little or none of the yel-
lowish brown hue so conspicious in S: v. beecheyi and 5. v. fisheri,
but nearer to the latter on account of the extension of the white
on shoulders, though this is rather indistinct on the present
species. Color of tail entirely different. Skull compared with
that of C. v. fisheri is much shorter and broader; malar broad
and heavy; nasals short; braincase short, contracting rapidly
anteriorly; antorbital processes very long; pterygoid fossa very
short and the processes of the pterygoids very long and turning
sharply outwards at tips; basioccipital short and broad; bullae
large; palate very broad; zygomatic arch widely expanded;
occipital region low and broad; prominent azygos process on
palatal arch.

Color. Type, Male. Top of head from fore part of forehead
to between ears jet black with a few tawny ochraceous hairs
mixed on certain parts; nose tawny ochraceous; sides of head
tawny ochraceous and black mixed ; hairs on sides of neck white
tipped, extending in a long, narrow, indistinct line to behind
shoulders; middle of back black and tawny ochraceous, the
black predominating; lower part of back and sides tawny ochra-
ceous and black, the first color predominating; under parts
buffy ochraceous; hands and feet buff; ankles tawny; limbs
buff and black mixed; tail above mixed buff and black giving a

* nj(Tfa>T£*«? — belonging to an island.

263

264 FIELD COLUMBIAN MUSEUM — ZOOLOGY, VOL. III.

grayish appearance, and with a black border and pale buff fringe,
beneath mixed buff and black with the black border showing
indistinctly in places, most clearly shown at base and tip; ears
black.

Measurements. Total length, 476.2; tail vertebrae, 184;
hind foot, 60. Skull: occipito-nasal length, 60.5; zygomatic
width, 39; interorbital constriction, 15.5; across postorbital
processes, 27; width of braincase above zygomata,' 25.3; length
of braincase, occipital rim to frontoparietal svyture, 31; median
length of nasals, 19; lateral length of nasals, 20; length of basi
occipital, 7; posterior width of basioccipital, 10; length of ptery-
goids, ii ; palatal length, 30; length of bullae, 12; width of bullae,
10 ; length of upper tooth row, 12; length of mandible, angle to
alveolus of incisor on inner side, 36; height at condyle, 19; at
coronoid process, 19; length of lower tooth row, n.

This is a well-marked island form, perhaps nearest to C. v.
fisheri, but very much darker in general hue, with an entirely
differently colored tail, and distinct cranial characters as given
above. The skulls of the two forms on comparison are con-
spicuously different. The general tone of the pelage including the
tail is* a dark gray, with tawny ochraceous tints appearing amid
black, and this last hue is massed on the middle of the back,
but with tawny ochraceous showing in a diminished degree.
Three specimens were procured on Santa Catalina Island by Mr. J.
Rowley, a male and two females, the only difference perceptible
between them being the absence of the black patch on the top
of the head, this part on the females being tawny ochraceous
mixed with black, like the major portion of the upper parts.

FAM. MURID.E.
PEROMYSCUS.

Peromyscus montipinoris, Sp. nov.

Type locality. Lockwood Valley, Mount Pinos, * Ventura
County, California.

Genl. Char. Size, medium; tail very long, hairy, penicillate;
ears large; hind foot long; color pale; skull similar to that of
P. truii, but with longer nasals and a broader and longer brain-
case and narrower interorbital region.

Color. Top of head and back mixed cinereous and buff,

* In the description of Perognalhus elibalus, Pub. 87, p. 252, Mt. Pinos was
wrongly placed in Los Angeles County. It should be Ventura County.

MARCH, 1904. NEW SPECIES OF MAMMALS — ELLIOT. 265

darker than rest of upper parts; nose, nape, and rump buff;
bright buff lateral line; upper parts of sides buffy; entire under
parts white; hands and feet white; ankles dusky; tail above
black, beneath yellowish white; ears dark brown.

Measurements. Total length, 214; tail vertebrae, 118; hind
'foot, 24.5; ear, 24.5. Skull: occipito-nasal length, 28; Hensel,
22; interorbital constriction, 4.5; zygomatic width, 13; greatest
width of brairicase, 13; length of nasals, 10; palatal length, n;
length of upper tooth row, 4; length of mandible, 12; lower
tooth row, 4.

This species while somewhat similar, is larger than P. truii,
and in color is paler and has a very much longer tail, longer foot,
and shorter ear. These differences are emphasized in a series of
truii before me. The coloring of the upper part of the tail is also
quite different, for while that of the present form is black, that of
truii is dark seal brown. The ears, while large, are considera-
bly smaller than those of the species compared, which sometimes
reach a length of 29 millimeters. Mr. Heller obtained only
three specimens of this mouse, from Mount Pinos, in the
vicinity of Fort Tejon, and he writes that it is a rather rare
species on the mountains about Fort Tejon.

Peromyscus *lasius, Sp. nov.

Type locality. Hannopee Canon, Panamint Mountains, Inyo
County, California.

Geogr. Distr. Panamint and Inyo Mountains, Inyo County,
California, and probably other neighboring ranges west of
Death Valley.

Genl. Char. Allied to P. megalotus from Arizona, and P.
truii from New Mexico, Arizona, and Nevada. The fur is
fluffy and the general color above in adults is pale ochraceous
buff, while P. truii is more of a clay color, and P. megalotus of a
darker hue. The tail is also much longer, and the skull is
heavier, with a longer, differently shaped braincase and longer
rostrum.

Color. Nose and side of face gray, tinged with buff; orbital
ring black; top of head and upper part of body pale ochraceous
buff, mixed slightly with black on dorsal region; sides and
lateral line from beneath eye to root of tail bright ochraceous
buff; entire under parts, hands, and feet pure white; under fur

* laffnx;, woolly; referring to the long, fluffy fur.

266 FIELD COLUMBIAN MUSEUM — ZOOLOGY, VOL. III.

plumbeous; tail hairy and penicillate, with a pale dusky line on
top, rest white; ears large, naked, dusky brown.

Measurements. Total length, 208; tail vertebrae, 105; hind
foot, 24; ear from notch, 27.5. Skulk total length, 29; Hensel,
21.5; zygomatic width, 14; interorbital width, 4; length of
nasals, 9.5; length of braincase, frontal suture to occiput, 18.5;
width of braincase above zygomata, 13.5; width at auditory
meatus, 12; palatal length, n; length of upper tooth row, 4;
length of mandible, 12.5; length of lower tooth row, 4.

Out of a series of 32 specimens the one selected for the type
has most of its measurements greater than those of any
other. The average of twelve adults with perfect tails is 194;
97; 23.4; 26.7. This would show that beside the difference in
color the present form is considerably larger than P. truii, a
series of 16 of which from Anderson's Ranch, Nevada, before
me, give much smaller measurements than even those of the
average sized stated above, especially as regards total length,
and that of the tail vertebras. The only other species with
which the present form requires comparison is P. megalotis
Merriam, from Black Tank, Little Colorado Desert, Arizona, and
by the kindness of Dr. Merriam, who loaned me three specimens
of his species, I have been able to bring the two forms together.
While resembling each other in color, P. lasius has a generally
paler hue on the upper parts, pure white hands and feet (these
in Dr. Merriam's examples being decidedly buff), a very differ-
ently colored tail on its upper side, and with a heavier skull,
having a larger and longer braincase, longer and stouter ros-
trum, and with a heavier mandible, especially between the
angle and coronoid process; the horizontal portion is also
stouter. P. megalotis has the tail above seal brown, like the
tail of P. truii, while the upper part of the tail of P. lasius is a
rather pale dusky. Altogether the California mountain species
seems to be a somewhat larger, heavier animal with marked
differences in color and also in cranial character from both its
relatives, the two species with which it has been compared.

ORYZOMYS.
Oryzomys jalapae *apatelius, Subsp. nov.

Type locality. San Carlos, State of Vera Cruz, Mexico.
Genl. Char. Similar to O. jalapce in color on upper parts,
grayish buff beneath ; tail shorter ; hind foot longer. Skull with "
* axaTrhos , deceitful.

MARCH, 1904. NEW SPECIES OF MAMMALS — ELLIOT. 267

longer and narrower braincase, zygomatic width less, nasals
longer, anterior palatine foramina longer, mastoid width less,
mandible more slender, narrower between angle and condyle.

Color. Above yellowish brown, lined with black, darkest on
dorsal region; chin and throat pale gray; rest of under parts
gray, tinged with buff; tail distinctly bicolor, above black,
beneath yellowish white, naked; hands and feet buffy white;
ears dark brown.

Measurements. Total length, 259; tail vertebrae, 130* hind
foot, 31. Skull: occipito-nasal length, 31.5; Hensel, 29.7; inter-
orbital constriction, 4.5; greatest zygomatic width,- 16; least
zygomatic width anteriorly, 13; width of braincase above zygo-
mata, 12; length of nasals, 12; palatal length, 13.5; length of
incisive foramina, 11.4; length of upper tooth row, 5; length
of mandible, angle to base of incisors, 15; height at condyle, 7;
length of lower tooth row, 5.

While resembling O. jalapce in the color of .the upper parts,
this Rice Rat differs so much in the hue of the under parts, the
proportions of body and tail, and in the shape and dimensions
of skull, that it seems more entitled to a distinct, independent
rank than a subspecific one. The skulls of the present form
and O. jalapte are quite different and recognizable at a glance;
the long, narrow braincase, restricted spread of the zygomatic
arches, long anterior palatine foramina, and lighter mandible of
the present form distinguishing it at once from its relative, not
to mention the shorter tail and longer hind foot and pale under
surface. By the kindness of my friend Dr. J. A. Allen I have
been able to compare my specimens with topotypes of O. jalapce.
Seven specimens of the new form were obtained at San Carlos,
Vera Cruz, by Mr. N. G. Buxton.

NEOTOMA.
Neotoma fuscipes *cnemophila, Subsp. nov.

Type locality. Lock wood Valley, Mount Pinos, Ventura
County, California.

Genl. Char. Size large; tail long, black above; general hue of
upper parts buff.

Color. Upper parts and sides buff with the base of hairs dark
plumbeous, and this latter coloring manifests itself on the
dorsal region and head, causing these parts to be darker than
* z*rtri.<',z — heights, and ^./.toi — to love.

268 FIELD COLUMBIAN MUSEUM — ZOOLOGY, VOL. III.

the rest; limbs mixed plumbeous and buff, the former hue pre-
dominating; chin, throat, and between thighs white; rest of
under parts yellowish white, the hairs being white to the roots,
excepting a line along the side where the base of the fur is plum-
beous ; hands and feet white ; wrists and ankles dusky ; tail above
and on sides black, beneath grayish white; ears dark brown.

Measurements. Total length, 380; tail vertebrae, 176; hind
foot, 39.5; ear, 33. Skull: occipito-nasal length, 46; Hensel,
38; zygomatic width, 23; interorbital constriction, 5.5; width
of braincase, 18; length of nasals, 18.5; palatal length, 19;
length of incisive foramina, 9; length of upper tooth row, 9;
length of mandible, angle to base of incisor, 23; length of lower
tooth row, 8.

This wood rat has quite \a different appearance from its rela-
tive N. mohavensis of the Mohave Desert, being yellowish where
the other is gray ; and the upper part of the tail is a more intense
black, that of the other form being of a bluish black. It is a
mountain form, the small series before me having been procured
by Mr. Heller at Mt. Pinos and other heights in the vicinity.

FAM. CANID^E.

UROCYON.
Urocyon cinereo-argenteus inyoensis, Subsp. nov.

Type locality. Beveridge Canon, Inyo Mountains, Inyo
County, California.

Genl. Char. Color silvery gray, much paler than U. c. cali-
fornictis, without ochraceous lines anywhere, and black on lower
part of back only.

Color. Adult. Entire upper part of breast and body and
also sides silvery gray with a black streak over lower part of
back; chin and nose above black; sides of neck and bar across
lower part of neck buff; fore legs silvery gray above, wood
• brown on outer side, and whitish on inner side; hind legs silvery
gray above, drab gray on outer side, whitish on inner side;
under parts white; tail silvery gray, slightly tinged in places
with buff, with a black curving line, tip black; ears brownish,
mixed with silver white hairs on outside, white inside; head
back of ears buffy.

Measurements. Total length, 950; tail vertebrae, 385; hind
foot, 140; ear, 82. Skull: total length, 124; occipito-nasal
length, 113. Hensel, 118; zygomatic width, 66; interorbital

MARCH, 1904. NK\V SPKCIES OF MAMMALS — ELLIOT. 269

width, 23.5; palatal length, 56; palatal arch to tip of pterygoid
process, 20; anterior width of pterygoid fossa, 9; posterior width
of basioccipital, 13; length of nasals, 40; length of upper tooth
row from anterior edge of canine to posterior edge of last
molar, 51 ; of lower tooth row, 57 ; length of mandible, 88.

This is a very pale form of U. c. calif ornicus , with some of
the rich ochraceous coloring of that race, and only tinged
with buff in certain places as mentioned above. There are
two specimens collected by Mr. Heller, the type with only a
restricted amount of black on the back, and the other, younger,
without any at all. The tail is very pale, quite different in
color from that of U. c. calif ornicus. The skull differs from all
those before me of the race just named, in the greater separation
of the temporal ridges, the width between them being retained
nearly to their posterior junction, and not graduating posteriorly
as in U. c. californicus. The pterygoid fossa is shorter and
broader, and the basioccipital wider posteriorly.

FAM. VESPERTILIONID^:.

PIPISTRELLUS.
Pipistrellus hesperus *apus, Subsp. nov.

Type locality. .Providentia Mines, State of Sonora, Mexico.

Genl. Char. About the size of P. hesperus, but quite different
in color, and with a larger foot. Larger than P. h. australis, the
exact color of which is not known.

Color. Upper parts wood brown, base of fur blackish; under
parts pinkish brown; nose, space before and around eyes, wing
and tail, membranes, feet and ears black.

Measurements. Total length, 72; tail vertebras, 31.7; foot,
6.3 ; forearm, 30.5 ; thumb, 4; longest finger, 47 ; ear from meatus,
10. Skull: occipito-nasal length, 10.5; zygomatic width, 8;
interorbital constriction, 3; width of braincase, 6.5; palatal
length, 5; post-palatal length, to anterior rim of forearm mag-
num, 4; length of upper tooth row, premolars and molars, 3;
length of mandible, 8.5; length of lower tooth row, premolar and
molars, 3.

This apparently distinct race of Pipistrellus hesperus was pro-
cured by Mr. J. Rowley in the locality given above in the north-
ern part of the State of Sonora. Four specimens were procured,
and all are much darker, and of a different color from that of P. hes-

* ar.'j- — swift.

270 FIELD COLUMBIAN MUSEUM — ZOOLOGY, VOL. III.

perns. The specimens of P. h. australis from Jalisco described by
Mr. G. S. Miller, Jr., had been long in alcohol and their exact color
is not known, no skins having been obtained, but if the measure-
ments given should be established by a series of specimens, it is
a smaller race than the one here described, and probably with a
different coloring. Additional material is riecessary before this
can be ascertained.

MOSCHOPHOROMYS.

In 1 88 1, Trouessart (Le Naturaliste, Paris, in, No. 45, p. 357)
proposed Megalomys as a generic name for Mus pilorides Desma-
rest from the Antilles. In 1903 (Ann. Mag. Nat. Hist., 7th Ser.,
xi, pp. 387-388), he considered this term preoccupied by
Megamys (Dorbigny & Laurillard, Voy. Amer. Mend., in, 1842,
p. no, pi. xn, figs. 4-8, Paleontology), which, in accordance
with the rules of nomenclature prescribed by the International
Zoological Congresses, to be correctly spelled should stand as
Megalomys. He, therefore, proposed in its place the term Mos-
chomys. Unfortunately this name is preoccupied by Moschomys
Bellberg, Syn. Faun. Scandinaviae, i Mamm., Conspectus A,
1828, proposed for the Ondatra, Lace"pede Castor zibethicus, Linn.,
and is not available. I, therefore, propose MOSCHOPHORO-
MYS, or Musk-bearing rat; ,«»ffx»ff, <f'£f>tu, nun, with Mus desmaresti
Fisch(= Mus pilorides Desmarest), 8$ Oryzomys lucia Major as the
species, the former to be considered as the type.

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