22 



443 decisum, Conrad, Upper California, 



444 ellipticum, Sowb., West Columbia, 



445 formosum, Sowb., West Columbia, 



446 Jayanum, Adams, Jamaica, 



447 laeve, Sowb., West Columbia, 

 multistriatum, Sowb., Philippines, 

 nucleolum, Lam., 15 England, 

 phaseolina, Lam., 11 Cherbourg, 



448 prismaticum, Lam., 10 England, 

 pubescens, Flem., England, 



449 pulchrum, Sowb., St. Elena, 

 purpurascens, Lam., 14 England, 



450 reticulatum, Sowb., Rio Janeiro, 



451 scabrum, Hanley, Isl. of Zebu, 



452 solidum, Gray, Arica, 



453 subtruncatum, Nevis, Brazil, 



454 tenue, Lam., 8 England, 



455 variegatum, Lam., 1 Brazil, 



456 Zebuense, Hanley, Isl. of Zebu, 



Jour. A. N. Sci., 7, pi. 19, f. 2. Amphidesma roseum? Sowb. 

 Zool. Proc., 1832, p. 200. 

 Wood's Supp., pi. 12, f. 48. 

 Proc. Bost. Soc. N. H., 2,p. 10. 

 Sowb. Conch. 111., f. 5. 



is Amphid. carnicolor, Han. 

 Mont. T. B. Supp., pi. 27, f. 4. is Kellia rubra, Turton. 



is Tliracia phaseolina, Kiener. 

 Mont. T. Brit, pi. 26, f. 3. Syndosmya, Recluz. 



is Thracia pubescens, Leach. 



Conch. 111., f. 2. 



Chenu (Ervilia), pi. 1, f. 2. is Ervilia nitens, Turt. 



Sowb. Spec. Conch., f. 11, 12. 



Wood., pi. 12, f. 9, Z.P.I 844, 17. 



Desh.Trait.El.,pl. ll,f. 10-12. 



Mont. T. Brit., pi. 17, f. 7. Syndosmya tenuis, Recluz. 

 Sowb. Gen., f. 1. 

 Wood's Supp., pi. 12, f. 7. 



GENUS CUMINGIA. Sowerby. 



457 Californica, Conrad, St. Barbara, 



458 camellosa, Sowb., Chili, 



459 Tellinoides, Conrad, Maine, 



Jour.A.N.S.,7,p.234,pl.l7,f.l2. 



Sow. Gen., f. 3. 



Conr. Mar. C., pi. 14, f. 2. Mactra Tellinoides, Conrad. 



CLASS. TROPIOPODA. 



ORDER. BIMUSCULOSA. 



FAMILY LITHOPHAGA. 



GENUS SAXICAVA. De Bellevue. 



460 Californica, 

 distorta, 



461 Pholadis, 



462 " var., 



463 praecisa, 



464 rhomboides, Desh., 



465 var., 



466 rugosa, 



Conrad, California, 



Say, Rhode Island, 



Lam., 3 N. Europe, 

 New York, 

 Turton, England, 



Jour. Ac. N. Sci., 7, pi. 20, f. 9. is Saxicava Pholadis, Lara. 

 Gould Invert. Mass., f. 40. 



Turt. B. Biv., pi. 2, f. 10, 11. Byssomya Pholadis, DeBlain. 

 Jour. Ac. N. Sci., V. 2, p. 318. Saxicava distorta, Say. 

 Turt. B. Biv., pi. 2, f. 12. 



7 Mediterranean, Poli, v. 1, pi. 15, f. 12, 13, 16. Hiatella arctica, Lam. 

 Mont. T. Brit., p. 53, pi. 1, f. 4. 



Lam., 1 North Europe, Reeve C. Syst., pi. 50, f. 1-4. Mytilus rugosus, Flem. 



