51 



LEA, ISAAC, LL.D.— (Continued.) 



RKl'iaXT (»!•' PAPERS READ, AND REMARKS MADE BEFORE TJIE ACADEMY 

 OF NATURAL SCIENrES (lE PlirLADELPIIIA, IN 1856-7. 8vo. PHILA- 

 DELPHIA. lS.-i7. 



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

 4to. PHILADELPHIA. 



IN CHECK LISTS OF THE SHELLS OF NORTH AMERICA. 8vo. SMITH- 

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



— Check List of the Unionidic. 



LEIDY, JOSEPH M.D., Philadelphia. 



IN PROCEEDINGS OF THE BOSTON SOCIETY OF NATURAL HISTORY. 



Remarks on the Sack of the Dart in Tebcnnophorus Carolini- 

 ensis, (Read September 17tli.) 



Vol. ii., i>. ;V.t. (let. 1SI5. 



IN BOSTON JOURNAL uF NATURAL HISTORY. 



Anatomical Description of tlie Animal of Litorina Anfjulifera, 



LAM. 



Vol. V. No. ;;, !■. :;io. Junu. isn;. 



IN PROCEEDINGS oF THE ACADEMY uF NATURAL SCIENCES, 

 PHILADELPHIA. 



On the situation of the Olfactory Sense in the Terrestrial Tribe 

 of Gasteropodous Mollusca. (Read Dec. loth, 18-i6.) 



VoL iii. No. (5, p. 136. Deceiiibor, 18 Id. 



On riumatella, bosc. (Read Sept. 9th.) 



Vol. V. No. II, p. 201. October, 1S51. 



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



Vol. v.. No. 11, p. 205. October, 1851. 



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



Vol. v., No. 12. p. .'i20. Dec.Muber, 1851. 



