808 INDEX AND SYNONOMY. 



PAGE. 



Sayi (Littorina), Reeve. Conch. Icon., p. 96, a, b. 



= L. irrorata, Say. var. ....... 246 



Sayi (Mouodonta), Nuttall. A. Adams, Zool. Proc., 203, 1850. 



- Modulus Carchedonicus, Lam. 261 



Scabra (Littorina), Anton. Verz., p. 53, 1839. 



= L. dilatata, d'Orb. . 258 



Scabra (Littorina). Linn. Syst. Nat., p. 1243, . . .243 

 Scabra (Littorina), d'Orb. Moll. Cuba, p. 212, t. 15, f. 15-17. 



= L. lineata, Gmel 243 



Scalata (Alaba), Carp. Mazatlan Shells, p. 368, . . . 282 

 Scutulata (Littorina), Old. Bost. Proc., iii, p. 83, 1846, . 250 

 Semihevis (Planaxis), Martens. Conch. Mittheil., ii, p. 151, 



1881, 280 



Semistriata (Alaba), Philippi. Zeitschr. f. Mai., 1849, p. 34, . 282 

 Semisulcatus (Planaxis), Sowb. Genera of Shells, i, f. 3, 1824. 



= P. nucleus, Lam 277 



Senegalensis (Alaba), Maltzan. Nachrichtsblatt, xvii, p. 28, . 282 

 Serialis (Littorina), Souleyet. Voy. Bonite., ii, p. 558, t. 31, 



f. 34-36, 1852. = L. pintado, Wood, var 250 



Setigerum (Holcostoma), A. Ad. Zool. Proc., p. 174, t. 20, f. 



5,1853. = H. piligerum, Phil 280 



Setosa (Littorina), E. A. Smith. Ann. & Mag., xvi, p. 69, 



1875, .255 



Sicula (Maravignia), Aradas. Atti Acad. Genova, xvii, 42, 



1840. = Fossarus ambiguus, Linn. ..... 271 



Sieboldi (Littorina), Phil. Zool. Proc., p. 142, 1845. 



= L. scabra, Linn. var. ....... 244 



Similis (Planaxis), E. A. Smith. Ann. & Mag., ix, p. 41, 



1872. = P. nigra, Quoy .278 



Simplex (Diala), E. A. Smith. Ann. & Mag., xvi, p. 105, 



1875, . .284 



Simplex (Littorina), Reeve. Conch. Icon., f. 63, a, b, 1857. 



L. rudis, Mtg 241 



Simpsoni (Fossarina). Tenison Woods. Roy. Soc. Tasmania, 



p. 149, 1875. = F. Petterdi, Brazier 275 



Sinensis (Littorina), Phil. Abbild., iii, p. 52, t. 6, f. 23. 



= L. intermedia, Phil, var 244 



Sismondi (Risella), Issel,Ms. Nevill, Hand List, 160. 



? R. infracostata, Issel 264 



Sitchana (Littorina), Phil. Zool. Proc., p. 140, 1845, . . 240 

 Solidula (Lacuna), Loven. Index Moll. Scandin., p. 23. 



= L. divaricate, Fabr. ....... 266 



Solutus (Fossarus), Nevill. Hand List, p. 167, 1884, . . 273 

 Souverbiana (Littorina), Crosse. Journ. de Conch., p. 53, t. 1, 



f. 6, 7, 1862. = L. brevicula, Phil .'241 



Houverbianus (Plesiotrochus), Fischer. Journ. de Conch., 



xxvi, p. 212, 1878, 264 



