10 AMERICAN JOURNAL 



73. Unio gibbosus, Bar. 



74. " GLANS, Lea. 



75. " GEACiLis, Bar. 



76. " GEANiFERUs, Lea. 



77. " HiGGiNsii, Lea. 



78. " IRIS, Lea. 



79. " LiGAMEXTixus, Lam. 



80. " LUTEOLUS, Lam. 



81. " METANEVRA, Eaf. 



82. " MONODONTUS, Say. 



83. " occiDENS, Lea. 



84. " ORBICULATUS, Hild. 



85. " PARVUS, Bar. 



86. " PHASEOLUS, Hild. 



87. " PLiCATUS^ Lesueur. 



88. " PUSTULATUS, Lea. 



89. " pusTULosus, Lea. 



90. " PYRAMiDATUS, Lea. 



91. " RECTUS, Lam. 



92. " RUBiGiNosus, Lea. 



93. " SECURis, Lea. 



94. " SPATHULATUS, Lea. 



95. " TENuissiMus, Lea. 



96. " TRIANGULARIS, Bar. 



97. " TRIGONUS, Lea. 



98. " TUBERCULATUS, Bar. 



99. " UNDULATUS, Bar. 



100. " VBNTRicosus, Bar. 



101. " VERRUCOSUS, Bar. 



102. " ZIGZAG, Lea. 



NOTES. 



The species appear to be very numerous, in individuals, at 

 this locality. They are large and perfect in growth, exhibit- 

 ing rich coloring ; especially is this case with the Unionidw, 

 which frequently possess warm pink, or purple nacres, very 

 iridescent, while the epidermis is bright yellow or green, 

 polished and splendidly rayed. The beaks are frequently so 

 perfect in old specimens as to exhibit the undulations plainly. 



Among the species presented by the above catalogue, Melan- 

 tho suhsoUda, Anth., may be distinguished for the great size 

 and weight it attains, one specimen being nearly two inches 

 long. Vivivara intertexta has not before been reported north 

 of Louisiana. 



Unio Higginsii and Somatogyrus depressa have not been, as 

 yet, discovered, except in Iowa. Unio distans, Anth., and 

 Limnophysa zehra, Tryon, will be described in our April No. 



