Crustacea 

 9. Gamnarus sp. 



10. Hyalella knickerbockeri (Bate) 



11. Cambarus propinquup Girard 



Insecta 



12. Hexagenia (see Neave, 1932) 



13. Trichoptera 



ill. Chironomidae 



Gastropoda 

 I 

 L5. Helisoma trivolvis (Say) 



L6. Physa sayii (Tappan) 



L7. Physa sp, 



L8. Campeloma decisxini (Say) 



19. Valvata tricarinata (Say) 



?0, Blthynea tentaculata (Linnaeus) 



?1, Amnicola limosa parva (Lea) 



?2. Somatogyrus subglobosus (Say) 



?3. Pleurocera acuta Rafinesque 



Ih. Goniobasis livescens Menke 



Lamellibranchiata 



-5. Fusconaia flava parvula Grier 



?6, Elliptio dilatatus sterkii Drier 



-7. Strophitus rugosus (Swainson) 



-8. Anodonta grandis Say 



-9. Proptera alata (Say) 



30. Leptodea fragilis (Rafinesque) 



257 



