AMERICAN NATURAL HISTORY. 



25 



Leconte (John L.). Notes on some suiline pachyderms from Illi- 

 nois.— Proc. Acad. Nat. Sc. Philad. VI. 1852, 3. (163 

 Dicotyles depressifrons. = Hyops depressifrons. 



Leconte (John L.). Notice of a fossil Dicotyles from Missouri. — 

 Proc. Acad. Nat. Sc. Philad. VI. 1852, 5. (164 

 Dicotyles costatus. 



Leidy (J.)- Memoir on the extinct species of American ox. — 

 Smiths. Contr. to Knowl. V. 1852. PI. I.— V. (165 



Leidy (J.). Description of the remains of extinct mammalia and 

 * chelonia, from Nebraska Territory, collected during the 

 geological survey under the direction of Dr. D. I). Owen. 

 — Owen's Rep. 1852, 535. (166 

 Anchitherium Bairdii. = P alee other ium Bairdii. 

 Archseotherium robustum.= Arctodon robusius. 

 Eucrotaphus auritus. 



Oreodon Culbertsonii. = Merycoidodon Culbertsonii, L. 

 Oreodon priscus L. and Cotylops speciosa, L. 



Lettsom (W. G.). Flora of the tertiary formation. (Augsburg 

 Gazette).— Amer. Journ. Sc. 2d Ser. XIV. 1852, 280. 



(167. 



Mantell (G. A.). Fossil ova, probably of Batrachians. — Amer. 



Journ. Sc. 2d. Ser. XIII. 1852, 280 (168 



Newberry (J. S.). Fossil fishes of the cliff limestone. — Ann. of 

 Sc.' I. 1852, 12. (169 



Owen (Richard). Comparison of the modifications of the osseous 

 structure of the Megatherium with that in other known 

 existing and extinct species of the class of mammalia : 

 being an abstract of a memoir rend by Prof. Owen to the 

 Royal Society of London. (Edinb. New Philos. Journ. 

 LI. 1851, 350).— Amer. Journ. Sc. 2d Ser. XIV. 1852, 

 91. (170 



Owen (Rich.). On the Megatherium (Megatherium americanum, 

 Blumenbach).— Philos. Trans. R. Soc. L. Part II. 1851. 

 719. PI. XLIV. — LIII. (175 



