Fossil Shells in the Drumlins of the Boston Basin. 491 



List of Species in the till of the Boston Basin. 



Species. 



1. 



2. 



3. 



4. 



5. 



6. 



7. 



8. 



9. 

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 2L. 

 22. 

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Cancer irroratus. Say 



Balanus balanoides, Stimpson. 



Balanus crenatus, Bruguiere 



Beta (sp.) 



Chrysodomus decemcostalus, Say 



Fusus tornalus, Gould 



Sipho stimpsoni, Morch _ _ _ . 



Sipho spitzbergensis, Reeve 



Neptunea ventricosa, Gray 



Neptuiiea pygmcea, Gould 



Buccinum undatum, Linne. 



Buccinum cyaneam, Bruguiere 



Tritia irivitatta, Say 



Ilyanassa obsoleta, Say 



Urosalpinx cinerea, Say 



Purpura lapillus, Linne 



Anachis avara, Say 



Astyris lunata, Say 



Lunatia heros, Say. 



Lunalia triseriata, Say 



Lunatia groenlandica, Moller 



Lacuna neritoidea, Gould (?) 



Grepidula fornica ta, Linne _ 



Crepidula plana, Say 



Crepidula convexa, Say 



Crucibuium striatum, Say 



Utriculus canaliculars, Say 



Zirfaza crispata, Linne 



Ensatdla americana, Gould 



Siliqua squama, Blainville (?) 



Saxicava arctica, Linne 



Saxicava norvegica, Spengel (?) 



Mya arenaria, Linne 



Mactra solidissima, Chemnitz.. 



Mulinia lateralis, Say 



Macoma fragilis, O. Fa Or 



Pe'ricola plwladiformis, Lamarck .. 



Venus mercenaria, Linne 



Callista convexa, Say 



Tapes fluctuosa, Gould (?) 



Cyprina islandica, Linne 



Cardium islandicum, Linne (?) 



Oyclocardia borealis, Conrad 



Astarte castanea, Say 



Astarte undata, Gould 



Argina pexata, Say 



Scapharca transversa, Say 



Mytilus edulis, Linne 



Modiola modiolus, Linne 



Pecten magellanicus. Conrad 



Pecten islandicus. M tiller 



Anomia glabra, Verrill 



Ostrea virginiana, Lister 



Astrangia danai, Agassiz 



Cliona sulphurea, Desor 





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a ^ 



S gj 



T= Pi CO 



O) o 



o ^ 



3^ 



32 32 29 i 27 21 16 19 



60 ."3 



x? 





o 



X? 



