MARINE MOLLU.SK8 OK Till': .SOUTll-EAS TEliN COA.Sl. 1 Do 



PLATE Lir. 



Fig. 1. Euinela siibulata Montiif;n; {Ccrilhiopiiii A'hutsohu Ad.). 



2. Cerithiopals Grcenii C. B. Ad;iiiis. 



;{. Triforin adccma var. nhjroeinctit AdMins. 



4. Biltium alteniatum Say ; (/>'. nigrum, Tot tun). 



5. Sella tervbraVis C. B. Adams. 



6. TurbonilUi chgans Vcriill. 



7. Odostomia bisitluraViH Say. 



8. Odostomia Irijida Totteu. 



9. Alexia myosotis Drapaiiiaud, young shell. 



10. Odostomia scminuda. 



11. Odostomia imprcssa Say. 



1?. liissoa iOnoba) aculeus Gould. 



13. SyrnoJa prodiicia Adams. 



14. Eidima intermedia Cautraino {E. o?f«cca K. and S.). 



15. Syrnolafusca Adams. 



16. SoIarieJla obscura Couthouy, 



17. liissoa (Cingula) miniita Totteu. 



18. Skcnea jilanorbis Fabricius. 



19. Lacuna viucta Montagu. 



20. Uaminca solilaria Say. 



21. Cylichna alba Brown. 



22. Actaon puncto striatus Adams. 



23. Cylichnella ory:a Stimpsou. 



24. Diaphana debilis Gould. 



25,26. Utriculus 2K'>-tcni<is Mighels, a series showing variations. 

 27. Tornatina canaliciilaia Say ; 5.0. 



Figures G, 25, aud 2(5 were loaned by the U. S. Fish Commission ; and weru dra .vn 

 by Prof. A. E. Verrill. See remarks under Plate L. 



PLATE LIII. 



Fig. 1, jHomia simj>/tx Orbigny, side view. 



2. The same, from below. 



3. Siliqua cosiata Say. 



4. Ensis americana Gould. 



5. Anomia acaleata Gmelin, from above. 



6. The same, from below. 



7. The same, sculpture magnified. 



8. The same, smooth variety. 



9. Modiolarin corrugata Stimpsou . ^ 



10. Crenella glandula Totteu. 



11. PecifJt ijradtans Lamarck, typical form. 

 For remarks see note to Plate L. 



PLATE LIV. 



Fig. 1. Modiola plicalula Lamarck, typical form. 



2. Modiolaria nigra Graj'. 



3. Alytilus cduUs Liun6, rayed color-variety. 



4. Modiola modiolus Linnc. 

 For remarks see uote to Plato L. 



