192 BULLETIJS 37, UJSITED STATES NATIONAL MUSEUM. 



PLATE XLVI— Continued 



Fig. 16. Dentalium candidum Jeffreys ; 75.0 ; 



17. The same, young shell ; 35.0. 



18. Dentalium laqueatum Verrill ; 45.0. 



19. Cadulus spectabilis Verrill ; 22.0. 



20. Cadulus grandisY erriU; 12.5. 



21. Pseudamusium undaium Verrill & Smith ; 19.0. 



22. Cryptodon grandis Verrill ; 21.0. 



23. Barhatia (Macrodoni) profwndicolaYeTTiW', 12.0. 



23. The same, interior of left valve. 



24. Biscinisca atlantica King ; 6.2; view from above, the setae projecting from 



the shell. 

 With the exceptions mentioned, the figures above enumerated first appeared in the 

 Transactions of the Connecticut Academy of Sciences (vol. vi, pi. xliv). They were 

 drawn under the supervision of Prof. A. E. Verrill, for the U. S. Fish Commission, by 

 Messrs. J. H. Blake and J. H. Emerton. 



PLATE XLVII. 



Fig. 1. Melampus flavus GvaeWn ; 12.0. 



2. Melampus floridanus Shuttleworth ; 7.5. 



3. Melampus coffeus Linn^, nat. size. 



4. Pedipes elongaius Dall ; 4.0. 



5. Tralia pusilla Gmelm ; 11.0. 



6. Pedipes MmisM?ca<ws Cooper, west coast of America. Introduced for compar- 



ison. 



7. Detracia iulloides Montagu ; 11.0. 



8. Auriculastrum pellucens Menke ; 16.0. In old specimens the peristome be- 



comes rather thick. 



9. Melampus lineaius Say ; nat. size. 



10. Sayella Crosseana Dall ; 2.5. 



11. Sayella Hemphillii Dall; 3.75. 



12. Melampus lineatus Say, typical or banded form, nat. size. 



13. Lettconia Mdentata Montagu. 



14. Blauneria heteroclita Montagu. 



15. Pedipes liratus Binney ; 3.3. This is extremely similar to P. mirabilis Muhl. 



feldt, the common species of the Antilles, Bermuda, and the Florida 

 region. It is introduced for comparison. 



16. Melampus olivaceus Carpenter, nat. size. West America. 

 17. Pedipes miralilis Muhlfeldt, var. naticoides Stearns; 3.6. 



Figures 4, 6, 8, 10, 11 were drawn by J. C. McConnell, and have appeared in the Pro- 

 ceedings of the National Museum ; Fig. 17 was drawn by Prof. E. S. Morse ; the re- 

 mainder are extracted from Binney's Land and Fresh Water Shells of North America, 

 published by the Smithsonia,n Institution, and were furnished by the Institution for 

 this publication. 



