_ Notice of two New Fossil Mammals. 143 
With these preliminary observations I proceed to offer a brief 
description of a fossil Sus and a fossil Chelonia, recently ed 
from Georgia. . Iam indebted to my intelligent friend and. éofiab- 
orator, J. Hamilton Couper, Esq. of Georgia, for two boxes of fos- 
sil bones, collected with much care and labor, during the excava- 
tions made in the constrnetion of the Brunswick Canal, Georgia. 
The bones were principally obtained from a post-pliocene forma- 
tioa—the Cetacea and Chelonia were probably from the green- 
sand. ‘The collection consists of the remains of the following 
genera, viz. Megatherium, beautifully preserved specimens of the 
teeth and lower jaw; Moniighin; Elephant, Hippopotamus, Bos, 
Sus, Chelonia, and Whale. ‘These valuable specimens are des- 
tined by the liberal donor for the cabinet of the Academy of Nat- 
ural Sciences of Philadelphia. The cases also. contained speci- 
mens of soil and fossil shells, mostly of recent species. 
Specimens of fossil Sus have rarely been discovered; the few 
detached relics of this nature are derived from turfs ond superfi- 
cial soils. Baron Cuvier remarks, “Ihave never known these 
remains accompanying elephants.” Indications of the existence 
of a fossil Sus I discovered several years since, in a collection of 
fossils obtained by Mr. Nuttall, in Newbern, North Carolina, in 
the newest tertiary, post-pliocene,—these were the teeth of a Sus, 
cecurring along with mastodon, elep ant, elk, deer, horse, on 
cetacea, tortoise, shark, skate, snake and fish,—all ated 
together as if anateoks of ie ne great 
aE iin shells, many 
Mastodon longirostris, found in the miocene of Mary 
erto found only on the continent of Europe, in equivalent strata. 
Sus Americ a 
The remnant consists of the left ramus of the lower jaw, com- 
pletely petrified, -and impregnated with iron; containing three 
molar teeth, a portion of a fourth, and a socket for the anterior 
molar, making five on each side of each jaw, besides large tusks 
and incisors in the perfect jaws. ‘The jaw has been fractured 
anteriorly behind the tusks, and posteriorly, immediately at the 
origin of the coronoid process; the foramen for the nerves and 
vessels through the body of the bone is very large. The follow- 
ing are the dimensions of the fragment of jaw. 
A 
