CONTENTS. 
Laws of the Society relating to the Transactions, : ix 
Officers of the Society for the year 1860, _ . : 6 é : 0 9 ; . 6 xe 
List of the members of the Society elected since the publication of the Tenth volume, . : 3 : xl 
List of the members reported deceased, : . : : : Xl 
Biographical Memoir of the late Francois André sean By Elias Durand, : : j ; 3 Xvill 
ARTICLE I. 
On Adipocire, and its Formation. By Charles D. Wetherill, Ph. D., M.D., . . : : : : 1 
ARTICLE II. 
Revision of the Cicindelee of the United States, with a plate, I. By John L. Le Conte, M. D., : 5 ae 
ARTICLE III. 
On a new genus of Boide, from Cuba, with a plate, If. By Edward Hallowell, M.D., . : : a 65 
ARTICLE IV. é 
Notice of some new and rare species of Scincide in the collection of the Academy of Natural Sciences of 
Philadelphia, with two plates, III, 1V. By Hdward Hallowell, M.D., . 4 3 : : : 71 
ARTICLE V 
Notice of Remains of the Walrus discovered on the coast of the United States, with two plates, IV, V. By 
Joseph Leidy, M. D., . : : , ; P ‘ : : . : 6 . : a eB) 
ARTICLE VI. 
Descriptions of the Remains of Fishes from the Carboniferous Limestone of Illinois and Missouri. By 
Joseph Leidy, M. D., : : : é : : é : : : 5 : : : 87 
- ARTICLE VII. 
Remarks on Saurocephalus and its allies. By Joseph Leidy, M.D.,  . ; : 5 : ‘ Sa Oil 
ARTICLE VIII. 
Observations on the Extinct Peccary of North America; being a Sequel to ‘A Memoir of the Extinct 
Dicotyline of America,” with a plate, VI. By Joseph Leidy, M.D., . ; : , : : 97 
