BIBLIOGEAPHY OF PUBLICATIONS OF ISAAC LEA, LL. D. 21 



1834-36. Lea, Isaac— Continued. 



Division of the Family Naiades 118-120 



Genus Margarita 121 



Subgenus Unio 121 



Subgenus Margaritana 134 



Subgenus Dipsas 136 



Subgenus Anodonta 137 



Genus Platiris 141 



Subgenus Iridina 141 



Subgenus Spatha ^ 141 



Addenda 143 



Unio Katherin^, Lea, n. s 143 



Lake Superior. 



Iiist of Kafinesque's species not identified by Mr. Lea 144 



Geographical Distribution of the Species of the Family Naiades 145 



Genus Margarita 145 



Sub. genus Unio 145 



Subgenus Margaritana 148 



Subgenus Dipsas 1 149 



Subgenus Anodonta 149 



Genus Platiris 150 



Subgenus Iridina 150 



Subgenus Spatha 151 



List of species not satisfactorily made out 151 



List of fossil species observed in Great Britain 151 



Fossil species in the United States 151 



List of authors quoted 152 



Contents of Mr. Lea's Memoir 153 



Errata 153 



28. 



1838. Lea, Isaac. A Synopsis | of the | Family of Naiades, | by Isaac Lea, | [Title] 

 Second Edition, Enlarged and Improved. | Philadelphia: | Carey, Lea & 

 Blanchard. | 1838. 4°. pp.44. 



This is pages 113 to 152 of No. 27 repaged and bound separate. 



CONTENTS. 



Synopsis of the Family Naiades 5_34 



Division of the Family Naiades 10-12 



Genus Margarita 13-32 



Subgenus Unio 13-26 



Subgenus Margaritana 26-28 



Subgenus Dipsas 28 



Subgenus Anodonta 29-32 



Genus Platiris .- 33-34 



Subgenus Iridina 33 



Subgenus Spatha .• 33-34 



Addenda 35 



Geographical Distribution of the Species of the Family Naiades 37-43 



Genus Margarita 37-42 



Subgenus Unio 37-40 



Subgenus Margaritana 40_4 1 



Subgenus Dipsas 41 



Subgenus Anodonta 42 



G«nu8 Platiris 42-43 



Subgenus Iridina 42 



Subgenus Spatha 42 



List of authors 44 



29. 



1838. Lea, Isaac. Observations | on the | Genus Unio, | together with | Descriptions 

 of New Genera and Species in the Families | Naiades, Colimacea, Lymna-ana, 

 Melaniana | and Peristoraiana. | Kead before the American Philosophical 



