410 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXVI. 



I'age. 



Macridiscus 359 



Macrocallista 351, 353, 369, 386, 387 



Marcia 359, 360, 396, 397, 406 



Mercenarid 360, 361 



MerciiiKuiia 361 



Meretric'iiijr 348 



Meretrix 352 



Meroe 350 



Metis 363 



Murcia - 358, 359, 360 



Myrsopsi.^i 363 



Myrsus 363 



Mysia 357 



Nympha 352 



Omphaloclathrum 358 



Orbiculus - 346 



Orthygia 359 



Ortygia 359 



Pachydesma 349, 368, 386 



Paphia 362, 397, 398, 399, 406 



PapMa 350 



Parastarte 365, 379 



Paratapes 362 



Paremhola . - - - 363 



Parmulina 351 



Parvivenus 359 



Pasipha'e 358 



Pelecyora 346 



Petrifora 365 



PHav 354 



Pitaria 353, 



354, 370, 371, 372, 387, 388, 402 



Polititape? 363 



Protapes 362 



Protothaca 364, 397, 399, 406 



Psephidia 366, 401, 407 



Page. 



Psephis 366 



Pullastra 363 



PuUastra 362 



Radiocrista 350 



Ruditapes 363, 364 



Samarangia 361 



Saxidomus 356, 364, 391, 408 



Solanderina 350 



Sunetta 349 



Sunettina 350 



Tapes 356, 362, 363, 364 



Taurotapes 362 



TetMopsw 357 



Textivenus 354, 361 



Textrix 362' 



Thetiopsis 357 



Thetironia 357 



Thetis 350, 357 



Timoclea 358, 374, 375, 395, 396, 405 



Tivela 348, 349, 367, 380, 381, 385, 386 



Tivelina 354 



Tottenla ^ 365 



Transennella 348, 367, 379, .384 



Trigona 349 



Trigonella 349 



Triquetra 359 



Venerella 361, 397 



Veneriglossa 353 



Veneriiipe 357 



Venerirupis 365 



Venerupis 365, 400 



Ventricola .... 355, 372, 381, 382, 390, 403 

 Venus. 354, 355, 360, 376, 377, 378, 396, 406 



Venusarius 355 



Volupia : 358 



Zucleica 358 



EXPLANATION OF THE PLATES. 

 Plate XII. 



EAST AMERICAN VENERID.K. 



Fig. 1. Dosinia {Dosinidia) discus Say. Cat. No. 54094, U.S.N.M.; South Carolina; 

 lengtli, 70.0 mm.; p. 379. 



2. Tivela nasuta Dall. Cat. No. 153377, U.S.N.M.; length, 33.0 mm.; Santa 



Marta, Colombia; p. 380. 



3. Tivela braziliana Dall. Cat. No. 125468, IT.S.N.M.; length, 40 mm.; Brazil; 



p. 381. 



4. Callocardia {Agriopoma) zonuta Dall. Cat. No. 92015, U.S.N.M.; length, 22.0 



mm.; North Carolina; p. 381. 



5. Cytheren ( Ventricola) strigiUina Dall. Cat. No. 95608, U.S.N.M.; lengtli, 38.0 



mm.; Key West, Florida; p. 381. 



6. Dosinia (Dosinidin) elegans Conrad. Cat. No. 6120, U.S.N.M.; length, 68.0 



nmi.; Texas; p. 379. 



