MAMMALIA.
4 9 . A r c t o m y s (S p e r m o p h i l u s ) GUTTATUS.? A m e r ic a n s o u s l ik . (F .B .A . N o .5 1 .)
Banks of the Columbia, and New Caledonia, on the mountains.
5 0 . A E C TOM Y S (S P ERM O PH IL nS )B E EO H E T I. B k E C H K Y ’S MARMOT. ( F .B .A .p . I 7 0 . ) *
San Francisco, and M onterey in California.
5 1 . A r c t o m y s ( S p e r m o p h i l u s ) D o u g l a s i i . D o u g l a s ’ m a r m o t . (F .B .A .N o .6 4 .)
Banks of th e Columbia.
5 2 . A r c t o m y s ( S p e r m o p h i l u s ) LATERALIS. S a y ’s m a rm o t . ( F . B .A . N o . 5 3 .)
Rocky Mountains, n ea r th e sources of the Columbia.
5 3 . S c iu r u s H u d s o n iu s . T h e c h i c k a r e e . (F. B. A . N o . 5 9 .)
New Caledonia, and banks of th e Columbia.
Lewis and C larke m ention a “ large grey squirre l,” which inhabits the oak forests o f the Columbia.
5 4 . S c iu r u s C oL L izE i (R ic h a rd s o n ) . C o l l i e ’s s q u i r r e l .
G en d s, Sduiua, A u c t . T laW o tli. (F e rn a n d e z , Quad. Nev. Bisp. p. 9.?) Ardillito-zorito, S p a n ish C a l i f
o r n i a n s . ,
C h . Sp . Sc d HOS C oLLIAI, utp r. emdn«. d«-» m j r ™ ; « . Iw e ta -
gata e nigTO canescentibus: hac quando distichd fasciata; naso umbrino.
Sp. Ch. C o l l i e ’s S q u i r r e l , above of a mixed yellowish-brown and black, darkest on the dorsal lin e ; below,
white ; sides, extremities, and long tail, hoary, the latter striped when distichous; nose umber-brown,
PLATE I-.
Mr. Collie observed this squirrel, in considerable numbers, sporting on trees a t San Bias in California,
where its vernacular name signifies » little fox-squirrel.” I t feeds on fruits o f various kinds.
Although unwilling to in cu r th e risk of adding to th e number of synonyms with which the history
of this large genus is already overburthened, I do not feel justified in referring it to any o f the
species admitted into recent systematic works, and I have therefore described it as new, naming it m
compliment to th e able and indefatigable natura list who procured the specimen. Fernandez enumerates
five different squirrels which inhabit Mexico. Thejiri#, or “ Q uauhtechallotl,” {S c iu ru s M e x t-
canus of Hernandez,) has black fur, and seems to he nearly allied to the S c . capistratus of authors.
The second named “ Coztiocotequallin,” from its tawny belly, lives in burrows, and is very probably
the A r c tom y s (S p e rm o p h ilu s ) Bee che y i of this list. The th ird , “ Techallotl,” has an almost naked
tail, burrows, and is also likely to prove a Spermophile. T h e fo u r th , “ Tlalmototli,” agrees, as far as
th e short description o f it goes, with the subject o f this article ; t b u t its absolute identity can be
established only by one who has an opportunity of studying the Mexican and Californian animals in
their native retreats. The f i f t h of Fernandez’s squirrels, or th e “ Quimichtpatlan,” is a pteromys.
The S c iu ru s Collicei differs from all the varieties of the S c . cinereus, in the colours of its fur, and the
smallness of its ears. The S c . vulpinus is a mqch larger animal. T h e S c . m a g n ic a u d a t^ may be distinguished
by its lips being black in place of w hite, and the feet and u nder surface of its tail ferruginous
instead o f grey. The S c . gram m u ru s has very coarse fur.
• No. 50. This marmot was discovered by thb expediUon. A detailed account of it, and figure, first appeared in
the Fauna Boreali-Amencana. Mr. Collie informs us that it has an epiglottU-Sb strong bony ciaoicle-and a large
curved c«c«m, 3^ inches long, having a diameter three or four times greater than that of the test of the intestinal tube.
t “ Quartus Thlmototli dictus spithamsus est, caput et oculos habet pro corporis magnitudine maxima, caudam vero
lougam, pilosamque et lineis totius corpora varius est, et quandoque iuclinaus in fulvum, c*tera pracedentibus similis.”