56 BIBLIOGRAPHY OF PUBLICATIONS OP ISAAC LEA, LL. D. 



75. 



1851. Lea, Isaac. [Account of the Life of Eichard C. Taylor. J <lProc. Amer. PhUoa. 



Soc.,\, pp. 226-228, No. 47, July, 1851— February, 1852. 



Coramanicated to the American Philosophical Society November 7, 1851. No. 47 of the 

 Proceedinfrs presented to the Society March 5, 1852. (See Pros. Amer. Philos. Soc, \, p. 253.) 



76. 



1852. Lea, Isaac. A | Synopsis | of the | Family of Na'iade.s. ] by | Isaac Lea, | 



[Title] I Third Edition, greatly enlarged and Improved. | Philadeljihia : | 

 Blanehard and Lea. | 18.52. 4to. pp. i-xx, 17-88. 



Presented to the American Philosophical Society on or before May 21, 1852. (See Froc. 

 Amer. Philos. Soc, v, p. 269 ) 



riiEFACE. 



"Few branches of Natural Histoi-y have advanced with more rapidity than that •which 

 embraces the part of Malacology, which, in this volume, is presented in the form of a Synop- 

 sis. This edition is therefore very much enlarged, having quite double the quantify of 

 matter of the former one. The arrangement of the genera will be found to have been some- 

 ■what changed. I have added an extensive alphabetical index of species and synonyms, 

 ■which ■will be found extremely useful for reference : and the number of additional species 

 will be found to be rather more tlian that which composed the whole in the previous edition.'' 



CONTKNTR. 



Corrigenda et Addenda viii 



Synopsis of the Family Naiades ix-xvii 



Division of the Family Naiades xviii-xx 



Genus Margaron '. lV-53 



Subgenus Triqnetra 17 



Subgenus Prisodou 18 



Subgenus TJnio 19-41 



Subgenus M.argaritana 42-44 



Subgenus Monocondylcea 45 



Subgenus Dipsas 46 



Subgenus Anodonta 47-53 



Genus Platiris 54-56 



Subgenus Iridina 54 



Subgenus Spatha 55 



Subgenus Mycetopus 56 



Names given in Ratinesque'a Monograph not identified 57-58 



Geographical Distribution of the Species of the Family Naiades 59-66 



Genus Margaron 59-65 



Subgenus Triquetra 59 



Subgenus Prisodon 59 



Subgenus Unio 59-64 



Subgenus Margaritana 64 



Subgenus Monocondylcea 64 



Subgenus Dipsas 64 



Subgenus Anodonta 64-65 



Genus Platiris 66 



Subgenus Iridina 66 



Subgenus Spatha 66 



Subgenus Mycetopus 66 



Index of Species 67-83 



Alphabetical List of the Works referring to the Naiades 85-88 



77. 



1852. Lea, Isaac. Description of a Fossil Saurian of the New Red Sandstone Forma- 

 tion of Pennsylvania; with some account of. that Formation. <^Journ. Acad. 

 iVia*.5ci.,P7/j?fl.,ii, New Series, pp. 185-202. Part III. Plates xvii to xix. For 

 separate see No. 79. 



Read and presented for publication in the Journal of the Academy, May 11, 1852. Extra 

 copies printed for the author May, 1852. (See Journ. Acad. Nat. Sci., ii, N. 8., p. iv.) 



Clepsysaurus, Lea 198 



Clepsysaurus pennsylvanicus, Lea 199 



For first mention of name see Proe. Acad. Nat. Sci'., Phila., v, 1851, p. 73. 



