XLIV 
Gray, Asa. Slatislics of the Flora of the Northern United States. 
(Extracted froin the Amer. Journ. of Se. and Arts. Vol. XXII 
and XXIII.) 8. 
Horner, Med. Dr., G. R. B. Médical Topography of Brazil and Uru- 
guay; with incidental Reraarks. Philadelphie 1845. 8. (From 
the Author.) 
Leidy. On Balhygnathus borealis, an extinct Saurian of the New Red 
Sandstone of Prince Edwards Island. (Extracted from the Journ. 
of the Acad. of Nat. Se. of Philad. Vol. II.) 4. 
— — Med. Dr., Joseph. Contributions towards a Knowledge of 
the Marine Invertebrate Fauna of the Coasts of Rhode Island and 
New Jersey. (Extracted from the Journ. of the Acad of Nat. Se. 
of Philad. Vol. III. Sec. Ser.) Philadelphia 1855. 4. 
— — Descriptions of Some Remains of Fishes from the Carboni- 
ferous and Devonian Formations of the United States. Descri- 
ptions of Some Remains of Extinct Mammalia. (Extracted from 
the Journ. of the Acad. of Nat. Se. of Philad. Vol. III. Sec. Ser.) 
Philadelphia 1856. 4. 
— — A Synopsis of Entozoa, and some of their Ecto- Congeners, 
observed by the Author. (From the Proceedings of the Acad. of 
Nat. Se. of Philad. Vol. VIII. Febr. 1856.) Philad. 1856, 8. ^ 
(From the Author.) 
Meek, F. B., and F. V. Hayden, Med. Dr. Descriptions of New Spe- 
cies of Acephala and Gasteropoda from the Tertiary Formations 
of Nebraska Territory, with some General Remarks on the Geo- 
logy of the Country about the Sources of the Missouri River. 
Philadelphia 1856. 8. 
— — Descriptions of New Species of Acephala, Gasteropoda and 
Cephalopoda, from the Cretaceous Formations of Nebraska Terri- 
tory. (From the Proc. of the Acad. of Nat. Se. of Philadelph. 
April 1836.) Philadelphia 1856. 8. 
— — Descriptions of New fossil Species of Mollusca. (From the 
Proc. of the Acad. of Nat. Se. Nov. 1856.) Philad. '856. 8. 
(From the Authors.) 
Norton's Literary Register; or: Annual Book List, for 1856. A Cata- 
logue of Books. New- York 1836. 8. 
Simpson, William. Synopsis of the Marine Invertebrata of Grand Ma- 
nan; or the Région about the mouth of the Bay of Fundy, New 
Brunswick. (Extracted from the Smithsonian Contributions to 
Knowledge.) Washington City 1853. 4. (From the Author.) 
Institutum Smithso- 
nianum 
Washingtonense. 
