791 



Portlandica, Ast., not identified. 



pidclira, DesJt., Cyth. elegans, by error. 



pulcherrima, Desk., Venerup. 15. pi. 165. f. 28. 



quadrans, Gould, Ast. 1-i. pi. 167. f. 5. 



robusta, Soioerby, Pet. 14. pi. 166. f. 16, 17. 



roccellaria, v. Petricola, sp. 12. 



rotunda, Gmel., takes precedence of Ven. papilionacea, 2, 



rugosa, v. Petricola, sp. 7. 



rugosa. Desk., Venerup. 23. pi. 165. f. 25. 



riiperella, v. Petricola, sp. 12. 



Scoiica, Ast. sulcata, sp. 1. 



semilamellata, Lamk., Pet. 17. pi. 166. f. 23. 



semisulcata, Leac/i, Ast. 8. pi. 167. f. 16. 



semisulcata, Ast. sulcata, sp. 1, Ast. elliptica, sp. 2. 



serrata, Besh., Pet. 2. pi. 166. f. 11. 



serrata, v. Venei'up., sp. 5. 



solida, Sotch., Pet. 11. pi. 166, f. 9. 



sphaerisulca, Besh., Ven. sp. 111. App. pi. 168. f. 231. 



siliqua, Besh., Venerup. 25. pi. 165. f. 27. 



simplex, Sotch.jiin., Cyth. App. sp. 125. pi. 168. f. 217. 



striata, Ast. compressa, 12. 



striata, v. Petricola, sp. 13. 



subajquilatera, Soiob.jun., Ast. 6. pi. 167. f. 13. 



subglobosa, v. Venerup., sp. 28. 



sulcata, Costa, Ast. 1. pi. 167. f. 1, 2, 3. 



sulcata. Gray, by error, Cyth. plebeja. 



tenuis, v. Petricola, sp. 7. 



triangularis, Mon,t., Ast. 18. pi. 167. f. 9. 



triqiietra, Ast. triangularis, 13. 



tumens, Gmel., Cyth. striata, by eiTor. 



tiimida, Sowb.jun., Venerup. 27. pi. 165. f. 34, 35. 



typica, Jonas, Pet. 13. pi. 166. f. 21. 



undata, Gould, Ast. 4. pi. 167. f. 12. 



undulata. Born, takes precedence of Ven. rimosa, 11. 



ventricosa, v. Petricola, sp. 5. 



vulgaris, Cyprina Islandica, 1. 



