103 
5. Pouched marmot Spermophilus (superciliosus ?) card containing 
portion of skull; (superior maxillaries with 2 incisor, 5 molar 
on left side, and last molar tooth on right, frontal, and part of 
parietal bones), nearly perfect lower jaw with all the teeth, 
wanting only ascending ramus on left side; 1 detached upper, 
* and 1 lower incisor tooth ; petrous portion of temporal bone ; 
3 vertebrae (axis and 2 dorsal imperject) ; right clavicle; right 
and left first ribs; fragment of scapula; left humerus; left 
ulna, wanting distal articular extremity; os calcis, astragalus, 
and 5 phalanges. Deposited by Dr . Blackmore . 
This little spermophile, or pouched marmot was about the size 
of a squirrel, and as no published account has been given of this 
fossil, which is of great local interest, the subjoined anatomical 
details may not be deemed out of place. First, as regards the 
teeth: the incisors are strong, rounded anteriorly, and slightly 
flattened on the inner lateral surface; the molars are simple, the 
roots being long and distinct. The crown of the first upper molar 
consists of a single sharp transverse ridge, that of each of the 
remaining four is divided transversely by a deep valley bounded by 
two sharp ridges, which terminate externally in two pointed pro¬ 
cesses, and internally in a single rounded tubercle. 
In the lower molars the transverse valley is wider and not so 
central, the anterior ridge is notched, and more elevated than the 
posterior one. Both upper and lower molar teeth gradually in¬ 
crease in size from before backwards, the first being the smallest 
and the last the largest of the series. In old individuals the thin 
coating of enamel is worn away at the more salient points. The 
nasal bones are rounded anteriorly ; the frontal is flattened above, 
and slightly depressed between the well marked superciliary ridges, 
which are elevated and form posteriorly strong postorbital pro¬ 
cesses. The parietal is a single bone; the suborbital foramen is 
round. Judging from the size of the orbit, the eyes must have 
been large. The clavicles are strong, and well developed ;fthe 
humerus measures lin. 4| lines in length. From the size and 
shape of the last or unguial phalanx, the animal must have 
been armed with strong sharp claws.. Remains of at least 13 
individuals have already been discovered at Fisherton, of these 12 
have been found within a few feet of each other, hence it is 
highly probable that the fossil species was social in its habits, like 
the S. Paryii of the present day. 
6. Lemming, Lemmus (Grcenlandicus ?), card containing 2 de¬ 
tached upper and two lower incisor teeth of large size; small 
fragment of superior maxillary bone with 5 molar teeth; por¬ 
tion of lower jaw with incisor, and 4 molar teeth, wanting 
last molar on both sides; (2) half lower jaw right side, with 
incisor and all molar teeth; portion of right scapula; (2) 
lower three-fourths of left humerus; upper one-third of right 
radius and ulna; body of left ilium, upper one-third of left 
