51 



LEA, ISAAC, LL.D.-(Continued.) 



REPRINT OF PAPERS READ, AND REMARKS MADE BEFORE THE ACADEMY 

 OF NATURAL SCIENCES OF PHILADELPHIA, IN 1856-7. Svo. PHILA- 

 DELPHIA. 1857. 



DESCRIPTION OF A NEW SPECIES OF THE GENUS UNIO. (U. SPINOSUS.) 

 4to. PHILADELPHIA. 



IN CHECK LISTS OF THE SHELLS OF NORTH AMERICA. Svo. SMITH- 

 SONIAN INSTITUTION, WASHINGTON, D. C. June, 1860. 



Check List of the Unionidoo. 



LEIDY, JOSEPH M.D., Philadelphia, 



IN PROCEEDINGS OF THE BOSTON SOCIETY OF NATURAL HISTORY. 



Remarks on the Sack of the Dart in Tebennophorus Carolini- 

 ensis. (Read September 17th.) 



Vol. ii., p. 59. Oct. 1845. 



IN BOSTON JOURNAL OF NATURAL HISTORY. 



Anatomical Description of the Animal of Litorina Angulifera, 

 LAM. 



Vol. v. No. 3, p. 346. June, 1846. 



IN PROCEEDINGS OF THE ACADEMY OF NATURAL SCIENCES, 

 PHILADELPHIA. 



On the situation of the Olfactory Sense in the Terrestrial Tribe 

 of Gasteropodous Mollusca. (Read Dec. 15th, 1846.) 



Vol. iii. No. 6, p. 136. December, 1846. 



On Plumatella, BOSC. (Read Sept. 9th.) 



Vol. v. No. II, p. 261. October, 1851. 



On Cristatella, cuv. (Read September 16th.) 



Vol. v., No. 11, p. 265. October, 1851. 



On some American Fresh Water Polyzoa, (Read Nov. 18th.) 



Vol. v., No. 12, p. 320. December, 1851. 



