'1 



SHELLBEARING SPECIES OP MOLLUSCA OBSERVED IN POR- 

 TIONS OF HERKIMER AND OTSEGO COUNTIES, NEW YORK. 

 BY JAMES LEWIS, MOHAWK, N. Y. 



]. Unio complanatus. Lea; rivers and canals. 2. U. cari- 

 osus, Say ; Mohawk River ; very rare. 3. U. luteolus, Lam. ; 

 Mohawk River ; very rare. 4. U. ochraceus, Say ; Mohawk 

 River ; very rare. 5. U. radiahis, Lam. ; lakes ; abundant. 



6. Alasmodon rugosa, Barnes ; canal and river, Mohawk. 

 7. A. marginata, Say ; canal and river ; rare. 8, A. undulata, 

 Say ; lakes ; not abundant. 



9. Anodon Jliwiatilis, J^ea. ; canal; very rarely seen. 10. A. 



; new species ; lakes ; abundant. IL A. Lewisii, Lea; 



canal. 12. A. edentula, Say ; canal and mill-ponds ; rare. 13. A. 

 Ferussaciana, Lea ; canal ; rare. 14. A. imhecilis, Say ; canal ; 

 rare. 15. A. subcylindracea, Lea ; mill races ; rare. 



16. Cyclas similis, Say ; lakes. 17. (7. modesta. Prime ; 

 canals and streams. 18. C. transversa, Sa,y ; canals and river; 

 Mohawk. 19. C. partumeia, Say ; ditches. 20. C. occidentalis, 

 Prime, (pvalis, Pr., formerly.) 21. C. ovata, Lewis ; undescribed . 

 very rare. 22. C. crocea, Lewis; very rare; outlets of lakes. 



23. Pisidium dubium, Gould ; river. 24. P. ahditum, Hald. 

 (Prime), P. zonatum, Pr. ; ditches. 25. P. vai'iahile, Pr., ditches. 

 26. P. compressum, Pr. ; canal, river, lakes, &;c. 27. P. altile? 

 Nutt. ; still waters. 28. P. ventricosum, Pr. ; stagnant waters ; 

 rare. 



29. Palndiria integra, Say ; canal and river ; 30. P. decisa, 

 Say; canal, river, and lakes. 31. P. ritfa, Haldeman ; canal 

 and river ; rare. 



32. Melania acuta, Lea ; canal and river. 33. M. 



(2 species ?) ; canal. 



34. Amnicola lustrica ? Hald. ; canal, river, and lakes. 35. 

 A. pallida? Hald.; lakes; rare. 36. A. limosa? Hald.; canal 

 and river. 



37. Valvata tricarinaia, Say ; canal, river, and lakes. 38. V. 

 hicarinata, Lea ; lakes ; rare. 39. V. sincera, Say ; lakes. 



40. Lymncpa elodes, Say ; stagnant water. 41. X. desidiosa, 

 Say ; stagnant water. 42. X. humilis, Say ; stagnant water. 

 43. L. umhilicata, Adams ; stagnant water ; (with 48.) 44. L. 

 gracilis, Jay ; lakes ; rare. 45. L. columella, Say ; lakes. 



