14 ART. 2.-r— S- TOKÜNAGA. 



Shinagawa (very rare) . ' 

 Living iu Japan. ,;;.:.• 



31. PLEüROTOMA (DRILLIA) PRINCIPALIS Pilsbry. 

 PL I. Fig. 23. 

 Pilsbry, Catal. Mar. Moll. Japan, p. 16. 



Shinagawa (abundant), Oj, (rare). 



Living: Enosliima (Sagami), Nanao (Noto), Katanoura (Kii), 

 Tsu (Ise), Inland Sea, Kagoshima and Aomori. 



32. PLEUßOTOMA (DRILLIA) SUBAURIFORMIS Smith. 



PI. J. Fig. 24. 



Dunker, Index Moll. Maris, Jap., p. 24. — Tryon, Man. Couch., VI., 

 p. 207.— Proc. Zool. Soc, 1879, p. 195 and p. 217.— Pilsbry, Catal. 

 Mar. Moll. Jap., p. 16.— Syst. Concli. Cab., IV. 3, p. 199. 



Öji (rare). 



Living : Tokyo, Kamakura (Sagami), Moroiso (Sagami) and 

 Inland Sea. 



33. PLELROTOMA (DRILLIA) RECIPROCA Gld 



Brauns, Geol. Env. Tokio, p. 33. — Gould, Otia Concli., }>. 135. 



Oji (abundant), Shinagawa (rare). 

 Living : Oshima (Izu). 



34. PLELROTOMA (DRILLIA) RARIC08TATA Smith. 



PI. I. Fig. 25. 



Tryon, Man. Conch., VI., p. 202.— Proc. Zool. See, 1879, p. 192.— Syst. 

 a)nch. Cab. IV. 3, p. 195.— Pilsbry, Cat. ]\Iar. Moll. Japan, p. 19. 



