OP CONCHOLOGY. 



167 



UNIO, Brug. 



U. acutissimus, Lea. 

 arctatus, Lea. 

 asperatus, Lea. 

 atro-costatus, Lea. 

 Blandianus, Lea. 

 Boykinianus, Lea. 

 consanguineus, Lea. 

 cornutus, Barnes. 

 decisus, Lea. 

 " decumbens, Lea. 

 dolosus, Lea. 

 excavatus, Lea. 

 fibuloides, Lea. 

 germanus, Lea. 

 glandaceus, Lea. 

 Foremanianus, Lea. 

 Hartmanii, Lea. 

 interventus, Lea. 

 Johannis, Lea. 

 lens, Lea. 

 Lewisii, Lea. 



medius, Lea. 



metanever, Raf. 



metastriatus, Lea. 



nucleopsis, Con. 



ornatus, Lea. 



parvulus, Lea. 



pauperculus, Lea. 



penitus, Con. 



perovalis, Con. 



V perplicatus, Con.* 



plancus, Lea. 



porphyreus, Lea. 



pulvinulus, Lea. 



pustulosus, Lea. 



pyramidatus, Lea. 



rubidus, Lea. 



Showalterii, Lea. 



stabilis, Lea. 



trinacris, Lea. 



unicolor, Lea. 



verus. Lea. 



MARGARITANA, Sclmm. 



43. M. Holstonia, Lea. 



ANODONTA, Lam. 



44. A. Showalterii, Lea. 



ANCULOSA, Say.* 



45. A. ampla, Anth. 



46. " contorta, Lea. 



47. " ? Downiei, Lea. 



48. " ligata, Atith. 



49. " rubiginosa, Lea. 

 60. " Showalterii, Lea. 



51. " tseniolata. Con. 



52. " vittata, Lea. 



53. " zebra, Anth. 



ACROLOXUS, Beck. 



54. A. filosus, Con. 



ANCYLUS, GeofFroy. 



55. A. elatior, Anth. 



EURYCCELON, Lea. 



56. E. midas. Lea. 



57. " nubila, Lea, 



GONIOBASIS, Lea. 



58. G. ffiqua. Lea. 



59. " Alabamensis, Lea. 



60. " ampla, Anth. 



61. " arctata. Lea. 



62. " auriculgeformis. Lea. 



63. " bellula, im. 



64. " Binneyana, Lea. 



65. " bullula, Lea. 



66. " calculoides, Lea. 



67. '• capillaris, Lea. 



68. " carneola, Anth. 



69. " clausa. Lea. 



70. " Coosaensis, Lea. 



71. " crenatella, Lea. 



*Possibly atro-costatus, Lea. 



* The genera of the Univalves arc alphabetically arranged 



