of Prvhoscidifcroua Oasteropoda. 423 



2. ^S". luteostoma, Olicm. [Bncciyvim^ ^ Conch. Cab. vol. ix. p. 83, 



pi. 187. f. 1800, 1801. 



Purpura luteostuma, Rve. sp. 35. 



II<th. Tsus-Sima, Tatiyama {A. Ad.) ; Hakodadi [Schr.), 

 Yokohama {Lischke). 



3. S. undafa, Larak. [Purpura), Hist. Nat. ed. 2. t. 10, p. 67. 

 Purpura rustira, Lamk. 



Hab. Hakodadi (Schr.). 



Genus Polytropa, Swains. 



1. P. lapillus, Linn. (Bucctnum), Syst. Nat. ed. 12. p. 1202. 



Buccinum filosum, Gmel. 

 Purpura Inpi/Ius, I^amk. 



iinbricata, Lamk. 



bizonalis, Lamk. 



Jimbriata, Lamk. 



squamosa, Lamk. 



Freycineti, Desh. 



attenuata, Rve. ? 



analotja, Forbes. 



Hob. Cape Notoro, Saghalien, Hakodadi, Rifunsiri. 



2. P. decemcostafa, Midd. (Purptcro), Beitrage zu einer ^lalac. 



Rossica, Taf. 9. f. 1,2,3. 

 P. canaliculata, Duel. 

 Hab. Cape Tofuts, Aniwa Bay. 



3. P. cri'spata, Chemn. (Buccinum), Conch. Cab. 

 P. septentrionalis, Rve. (Purpura), Conch. Icon. sp. 50. 

 P. plicata, Mart. 



P. lactuca, Esch. 



Hab. Aniwa Bay, Saghalien, Olga Bay, Vladimir Bay. 



Genus Sistrum, Montf. 



1. S. tuberculatum, Blainv. [Ricinula], Nouv. Ann. du Mus. 



pi. 9. f. 3 ; Reeve, Conch. Icon. (Purpura) sp. 11. 

 Purpura inarginella, Blainv. 

 granulata, Duel. 



Hab. Sado, Tsus-Sima, Tatiyama. 



2. S. si'dereum, Rve. (Picinula), Conch. Icon. sp. 14. 

 Hab. Takano-Sima. 



Genus Exgina, Gray. 



1. E. acuminata, Rve. (Ricinula), Conch. Icon. sp. 52. 



Hab. Tsus-Sima. 



29* 



