8 ART. 2. — 8. TOKUNAGA. 



13. BUCCINUM UNDATUM Linné. 



PI. I. Figs. 10 a and h. 



Syst. Conch. Cab., III. 1, p. 15 and 31.— Wood, Crag Moll., p. 35.— 



Tryon, Man. Conch., II., p. 173. — Sowerby, Genera rec. and fos. 



Shells. — Veriiand. Russ.-Kais. Miner. Gesell. St. Petersburg., II. 



Series, XXXVIII. Band, 1, 1900. 

 Synonym. — B. littoralis King. — B. striata Sow. — B. ochotense Midd. — 



B. pelagiea King, — B. zitlandica Forb. 



The species of this genus are all restricted to the boreal 

 seas. No living specimens are found south of Hakodate. Though 

 my specimens differ in some points from the descriptions given 

 of BuGcinum undatum Linné in several works consulted, yet I 

 believe they are only a varietal form of the species, for it is 

 known as very variable in form. 



Shinagawa (abundant), Oji (rare). 



Post-Pliocene of the northern coast of Kussia (Murman Sea, 

 White Sea and Nova Zembla). 



Living : Hakodate, Kitami (Hokkaido), Etorof, Siberia, Sea 

 of Ochotsk, North Cape, White and Murman Sea (Russia), 

 Baltic Sea, England, France, Iceland, Labrador, Newfoundland, 

 jNIassachusetts, and Ocean to the south of New Jersey. 



H. YOLUTHARPA PERRII Jay. 



PL I. Fig. 11. 



MiDDENDORF, Sib. Reise.— Ann. Mag. Nat. Hist., III. 6. (1860), p. 109. 

 —Tryon Man. Conch., III., p. 173.— Syst. Couch. Cab., III., p. 95. 

 Synonym. — V. paulueeiana Tap. 



This genus has only seven species, all of which are restricted to 

 the North Pacific Ocean, with the exception of the present, which 

 is found living at Hakodate,' Tokyo Bay and Enoshima (Sagami). 



Oji (rare). 



