Iv s CONTENTS. 
Page 
Art. XIII. Description of a New Species of Polypterus, from West 
Africa. By W. O. Arres, Boston 4 : é 241 
Art. XIV. Observations on the Fishes of Nova Scotia and Labrador, 
with Descriptions of New Species. By Horatio Ros- 
INSON STORER, Boston . : : ; > i 
Arr. XV. Descriptions and Figures of the Araneides of the United 
States. By NicHOLAs MARCELLUS Hentz, Tusca- 
loosa, Alabama. [Concluded from page 35.] . , 
ArT. XVI. A few Ornithological Facts, gathered in a hasty Trip 
; through portions of New Brunswick and Nova Scotia, 
in June, 1850. By T. M. Brewer, M. D., Boston $o7 
247 
271 
GvxwpLaAcH, Havana, Cuba . 3 N } i 313 
Arr. XIX. The Organic Relations of some of the Infusoria, including 
Investigations concérning the Structure and Nature of 
the Genus Bodo, (Ehr) By W. I. Burnett, M. D., 
Boston " à 
: ac a cre i ^ Ld 
" ART. XX. Notes and Observations on the Analysis and Character of 
the Soils of the Scioto Valley, Ohio, with some general 
Considerations respecting the subject of Soil Analyses. 
| By Davi» A. We ts, Cambridge . pt uL MM 
ART. XXL On the Skeleton of the Great Chimpanzee, TPoglodytes 
s gorilla. By SAMUEL Kneevanp, Jr, M. D., Boston. 336 
ART. XXI. A Monograph of the Species of Pisidium, found in the, - 
i: United States of North America. By TEwPLE Prime 348 
AnT. XXIIL Description (with figure) of Menobranchus punctatus. By 
wis R. GrnnEs, M. D., Charleston |. Rol: qM 
Arr. XXIV. Descriptions of Shells from the Gulf of California and the 
acific Coasts of Mexico and California. By Avcus- 
Tus A. Goutp, M. D ; Bosto: 9 
: New Species of Fossil Plants, from the Anthracite dad 
Bituminous Coal-fields of Pennsylvania; collected and 
scribed by L QUER 
H 
. (Cuv. & Val.) ,By Jerrrizrs Wyman, M. D. s. 98 
On the Crustacea and Echinodermata of the Pacific Shores 
EPSON . : 
