Page. 



PI. 



Fig. 





11 



i 



5-5» 





11 



i 



6 





12 



i 







12 



ii 



1 





13 



ii 



2 





14 



ii 



3,3% 



3« 



14 



ii 



3b, 



3° 



15 



ii 



4^ 4a 





16 



ii 



5^ 



5° 



17 



ii 



5,5^ 





24 BIBLIOGRAPHY OF [PART II. 



[Chenu, Bibliotheque Concliyliologique.] 



Name. 

 tJnio sulcatus Lea. 



U. Jiagellatus Say, in Cab. 

 ridibundus Say. 

 perplexus Say. 

 monodonta Say. 

 Delphinula laxa Say. 

 Melania nupera Say. 



depygis Say. 

 Lutraria lineata Say. 



L. papyracea Lam. 1 

 Paludina decisa Say. 

 vivipara Linn. 



Helix vivipara Linn. 

 Nerita vivipara Miill. 

 Cyclostoma vivipara Drap. 

 Anodonta suborbiculata Say, 

 Nucula limatula Say, 

 Isevis Say. 

 concentrica Say. 

 Helix albolabris Say, 



thyroidus Say. 

 Unio ellipsis Lea. 

 subtentus Say. 

 undulatus Barnes. 



U. heros Say. 

 abruptus Say. 

 Solecurtus costatus Say. 

 Solen costatus Say. 



27 vii 1, 1* Fulgur pyruloides Say. 



Bulla ficus (var. S) GmeL 

 Pyrula spirata Lam. 

 Bulla pyritm Dillw. i 



28 vii 2, 2« Glandina truncata Gmel. 



Buccinum striatum Chemn. 

 Polyphemus glans Say. 

 Helix rosea Fer. 



30 viii 1, 1* Alasmodonta confragosa Say. 



31 ix 1-6 Unio phaseolus Hild. 



U. cuneatus (var.) Barnes. 



planulalus Lea. 



32 X 1-3 tetralasmus Say. 



32 ix 7-9 dehiscens Say. 



33 viii 2, 2» Sigaretus perspectivus Say. 



34 viii 2'>, 2" maculatus Say. 



18 



iii 



l,la 



19 



iii 



2, 2% 2" 



20 



iii 



3* 



20 



iii 



2« 



21 



iii 



3^ 



22 



iii 



3^,3= 



22 



iv 



1, 1% 1" 



23 



iv 



2, 2% 2" 



24 



V 



l,la 



24 



vi 



1, 1% 1" 



26 



iv 



3, 3% 3" 



