Boston Society of Natural History. 385 
as Amphidesma corbuloides, Lam.; but the European shell is twice the 
size, more elongated, more besaaly truncated, more inequilateral, — 
and covered with a much stronger and more opaque epidermi 
Gould noticed the peculiarity of the ossiculum several years since, and 
consequently referred the shell to the genus Lyonsia. 
r. Cournovy, also read the description of a new species of Eolis 
lately found by him, and which he name 
Eotis piversa. E. corpore limaciformi, posticé acuto, diaphano, lu- 
teo-rufescente, capite distincto, sub-orbiculato, depresso; tentaculis 
gracilibus elongatis duabus instructo, duabusque brevioribus ad par- 
tem posticam capitis positis; branchie aurantiace seriebus binis la- 
teribus dorsi dispositis. Orrificia ee i magna, juxta collum 
ad Jatus dextrum, ano paullum pone; pede supra laciniato. h 
$*, breadth 35 of an inch. Inhabits Massachusetts Bay, Chetek 
each, 
Found among the roots of Laminaria saccharina. In its color and 
general aspect it resembles E. salmonacea, Nobis, but differs in the form 
and position of the tentacula and genitalia. In E. salnonacea the lateral 
tentacula seem to be a prolongation of the fleshy lips, instead of being 
placed near the neck; the superior ones are long, somewhat compressed, 
and as it were serrated at the edges, while in E. diversa they are short, 
smooth and round. 
Dr. Jerrries Wyman, reported upon a collection of fossil bones from 
the Brunswick canal, Georgia, presented by Mr. Cooper. It consisted of 
eighteen bones béldaging to the genera Bos, Elephas, and probably Mas- 
todon. Among them were the atlas of a ruminant, of gigantic size; me- 
tatarsal bone of right foot of genus Bos, about twice the size of the cor- 
responding bone of the common ox which he exhibited by its side, and 
Similar to it in every particular; several vertebre of a Mastodon; portions 
of a tusk and teeth of an Elephant. These teeth resemble those of an In- 
dian elephant, but the layers of enamel are more numerous and closer. 
An 0s calcis having the hinder portion broken off, but which is now mee 
than that of our elephant, though not so massive. 
Dr. W. had also examined some fossil hones brought from Burmah by 
Rev. H. Malcom. They consist of a portion of the brim of the pelvis, 
Probably of a Mastodon; tooth exhibiting the longitudinal crescentic lay- 
ers characteristic of a ruminant, and corresponding with a figure by Mr. 
Clitt in the Trans. of the Geol. Society, vol. vii, of the tooth of a deer from 
the same locality ; »ertebra of a Saurian, also resembling a figure by Mr, 
Clift, and which he regards as the vertebra of a crocodile, with all proba- 
bility of truth. This locality on the river Trawaddy, below Ava, is the 
Only locality known where the bones of mammalia and saurians are found 
associated, 
Vol. xxxv1, No. 2.+April-July, 1839. 49 
