[SMITHSONIAN MISCELLANEOUS COLLECTIONS.] 



CHECK LIST 



SHELLS OF NORTH AMERICA. 



EAST COAST: 



ARCTIC SEAS TO GEORGIA. 



BY 



WM. STIMPSON. 



The following catalogue is offered as an exposition of the present state 

 of our knowledge of the molluscous fauna of the eastern coast of North 

 America, from the arctic seas to Georgia, inclusive. It is the result of an 

 attentive search of all puhliahed accounts relating to the subject, and no 

 species is included that has not been thus announced as an inhabitant of our 

 shores by competent authority ; although others are known to exist there, 

 which have not yet been properly determined. All synonyms have been 

 carefully eliminated. Under the head of "Doubtful Species" we have added 

 a list of the names both of those the existence of which upon our coast is 

 uncertain, and of those which will probably prove identical with species 

 already catalogued. 



BRYOZOA. 



1. Pedicellina americana, Leid/j. 



2. Bo"werbankia gracilis, Leulij. 



3. Valkeria pustulosa, Ellis. 



4. Eschara foliacea, Linn. 



5. Escharina variabilis, Leidi/. 



6. Escharina pediostoma, Leidij. 



7. Escharina lineata, Leidy. 



8. Flustra truncata, Lin. 



9. Flustra solida, Stm. 



10. Cellularia ternata, Ellis. 



11. Cellularia densa, Desor. 



12. Cellularia fastigiata, Blum. 



13. Cellularia turrita, Desor. 



14. Membranipora tenuis, Desor. 



15. Lepralia annulata, Jolinst. 



16. Lepralia sordida, Stm. 



17. Lepralia rubens, Stm. 



18. Lepralia crassispina, Stm. 



19. Lepralia labiata, Stm, 



(0 



20. Hippothoa rugosa, Stm. 



21. Gemellaria dumosa, Stm. 



22. Crisia denticulata, Joknst. 



23. Crisia cribraria, Stm. 



24. Idmonea pruinosa, Stm. 



25. Tubulipora divisa, Stm. 

 2(3. Tubulipora patina, Johnst. 



27. Tubulipora crates, Stm. 



TITXICATA. 



28. Botryllus stellatus, Pallas. 



29. Synoicum turgens, Phipps. 



30. Salpa Caboti, Desor. 



31. Boltenia clavata, 0. Fahr. 



32. Boltenia rubra, Stm. 



33. Pera pellucida, Stm. 



34. Cynthia crystallina, Moll. 



35. Cynthia pyriformis, Rathke. 



36. Cynthia subcaerulea, Stm. 



37. Cynthia partita, Stm. 



