NORTH AMERICAN CONCHOLOGT. 



%5 



Pa. Fig. 

 107 68, 



Family IVaiades Lam. 



Pa. Fig. 



115 76 



109 71 



110 73 



111 72 



112 74 



121 82 

 123 



125 81 



132 

 133 89 



69, 70 Unio complanatus Sol. 

 Mya complanata Sol. 

 U. purpureus Say. 

 purpurascens Lam. 

 violaceus Spengler. 

 rarisulcata Lam. 

 coarctata Lam. 

 rhombula Lam. 

 carinifera Lam. 

 Georgina Lam. 

 glabrata Lam. 

 sulcidens Lam. 

 Jluviatilis Green, 

 nasutus Say. 



]\Iya nasuta Wood. 

 U. rostratus Valeno. 

 radiatus Gmel. 

 Mya radiata Gmel. 

 U. Virginiana Lam. 

 Mya oblongata Wood. 

 cariosus Say. 

 U. ovata Val. 

 ochraceus Say. 



Symphynota ochracea Lea. 



Family IWytilacea Lam 

 Mytilus edulis Lin. 



M. vulgaris Da Costa. 

 Musculus subcxruleus Lister, 

 M. borealis Lam. 

 var. pellucidus. 

 Modiola modiolus Lin. 

 Mytilus modirjlus Lin. 



papuanus Desh. 

 Modiola papuana Lam. 



vulgaris Fleming. 

 Mytilus barbatus Lin. 

 plicatula Lam. 



Mytilus demissus Dillw. 



Family Pectenides Lam 

 Pecten magellanicus Gmel. 

 Ostrf.a magellanicus Gmel 

 Islandicus Mull. 



Ostrea Jslandica Miill. 



113 75 



116 77 



117 80 



118 78 



120 79 



Alasmodon arcuata Barnes. 

 Mya magariti/era? Lin. 

 Margaritana margariti/eraLea.. 

 undulata Say. 



Unio undulata Say. 

 Alasmodonta undulata Barn. 

 3Iya undulata Wood. 

 Margaritana undulata Lea. 

 Unio Mans Val. 

 Alasmodon undulata Swains. 

 marginata Say. 

 Unio varicosa Lam. 

 Alasmodonta truncata? Say. 

 Margaritana marginata Lea. 

 3Iya rugulosa Wood. 

 Anodon fluviatilis Dillw. 

 Anodonta cataracta Say. 

 Mytilus Jluviatilis Dillw. 

 illitus Sol. 

 implicata Say. 



Anodonta Newtoniensis ? Lea. 

 marginata ? Say (young). 

 undulata Say. 



A. rugosus Swainson. 



127 85 



128 86 



129 83 



130 84 



131 87 



134 88 



Mytilus plicatulus Desh. 



Modiola semi-costata Conr. 

 Modiola pectinula Gould. 

 nexa Gould. 

 discrepans Mont. 



Mytilus discrepans Mont. 

 discors 0. Fabr. 



Modiola laevigata Gray (var.) 

 discors Lin. 



Mytilus discors Lin. 



Modiola discrepans Lam. 

 glandula Tott. 



Ostrea cinnaharina Bom. 

 P. Pealeii Conr. 

 Pecten concentrlcus Say. 



