MARINE MOLLUSKS OF THE SOUTH-EASTERN COAST. 191 



PLATE XLV. 



FIG. 1. Placophora atlantica Verrill & Smith; nat. size. 

 1 a. The same, dorsal view. 



1 b. The same, views of detached valves, two diameters. 



2. Trachydermon exaratus Sars ; 20.0. 



2 a. The same, ventral view. 

 2 6. Anterior valve, f . 



3. Cuspidaria lamellosa Sars ; 7.3. 



4. Lyonsia? <irafa Verrill & Smith; 36.0. 



5,6. The same ; views of the beak and hinge of two specimens to show varia- 

 tions; : i. 



7. Lyonsiella (insculjjla Jeffreys var. ?) gemma Verrill; 4.5. Interior of left 



valve. 



8. The same ; exterior of the right valve of a larger specimen. 



9. Verticordia ( Triyonulina) omata Orbigny ; 3.0. 

 9 a. The same, view of the interior. 



10. Diplodonta turgida Verrill & Smith; 25.0. 



11. The same, interior of a somewhat smaller valve. 



12. Modiola polita Verrill & Smith ; 33.0. 



13. Tellimya ftrruginosa Montagu ; 8.5, with the animal extended. 



14. Leda pernula Mu'ller; 17.0. Halifax to Martha's Vineyard, on the Amer- 



ican coast ; Europe. 

 14 a. The same, view of the hinge. 



15. Leda acuta Conrad ; 12.0. Side view. 



16. Idas argenteus Jeffreys, var. lamellosus Verrill & Smith ; f . 

 16 a. The same, interior of the right valve ; f. 



This plate first appeared in the Transactions of the Connecticut Academy of Sci- 

 ences (vol. vi., pi. xxx). The figures were drawn, under the direction of Prof. A. E. 

 Verrill, for the U. S. Fish Commission, by J. H. Emerton. 



PLATE XLVI.. 



FIG. 1. Purpura hcemastoma Liune" var. florid-ana Conrad, operculum, inside view, 

 nat. size. 



1 a. The same, outside view. 



2 a. The same, a view of the shell, nat. size. 



2 b. The same, from the opposite side. [The preceding figures were drawn by 

 the late Dr. William Stimpson.] 



3. Pleurotomella chariensa Watson ; 52.0. 



4. Pleurotomella tincta Verrill ; 22.0. 



5. Pleurotomella Frielei Verrill ; 22.0. 



6. Plturotomella vitrea Verrill ; 8.0. 



7. Pleurotomella Lotta' Verrill ; 11.5. 



8. Pleurotomella (Gymnobela) Blakeana Dall ; 8.0. 



9. Admetel nodosa Verrill ; 12.0. 



10. Jumala bri/chia Verrill ; 41.0. 

 10 a. The same, operculum. 



11. Laxispira nitida Verrill ; 5.0. 



12. Omalaxis nobilis Verrill ; diam. 11.0, alt. 3.0. 



13. Pleurobranchus americanus Verrill ; 13.5. 



14. Coleophysis 1 eburnea Verrill ; 6.0. 



15. Actceon melampoides Dall ; 8.0. 



