34 The Williams Collection of Shells 



quadrifrons, Frauenfeld. Gibraltar 

 quadrifrons, Frauenfeld var. South Seas 



radix, Gmel. Panama 



radix, Gmel. var. Mazatlan 



ramosus, Linn. Zanzibar, Fiji Is. 



ramosus, var. Red Sea 



rarispina, Lam. Indian Ocean 



rectirostris, Wood. Hong Kong 



recurvirostris, Brod. Panama 



regius, Wood. Panama 



rorifluus, Ad. and Reeve. Japan 



rosarium, Chem. West Africa 



rota, Sowb. ("The largest and finest pair known," G. B. 



Sowerby. From an old collection.) 

 rota, Sowb. Indian Ocean 

 rubiginosus, Reeve 

 rufus, Lam. Bahamas, Florida 

 rufus, Lam. var. intermedia. Bahamas 

 rufus, Lam. var. florifer, Reeve. Bahamas 

 rufus, Lam. var. Gulf of California 



salebrosus, King. Peru 

 salleanus, A. Ad. St. Domingo, W. I. 

 saulae, Sowb. Philippines 

 saxatilis, Lam. Indian Ocean 

 scalarinus, Biv. Mediterranean 

 scolopax, Dillw. Persian Gulf 

 scorpio, Linn. Moluccas 

 scrobiculatus, Dunker 

 secundus, Lam. Ceylon 



