6 THE CONCHOLOG1CAL MAGAZINE 



margins recurved, the former very short and oblique, the latter 

 straightened with a slight elevation corresponding with the irregular 

 excavation. 



Alt. 14.2, greater diam. (including peristome) 26.2, lesser diam. 

 23.4 mm. 



Alt. 12, greater diam. (including peristome) 25, lesser diam. 

 22.1 mm. 



Around Kaza-ana (a lime-stone cave), Shinodachi, Ise, types in 

 my collection. 



This species is larger and flatter than G. tabuensis Ancey, also 

 flatter than G. japonica carinata Pilsbry & Gulick, and distinguishable 

 by the strong carina at the periphery and the colour (not yellowish). 

 It is named in honour of Mr. Tajima Kanamaru, the first collector of 

 this species. 



Among them there are three specimens quite distinguishable 

 from the others by their smaller size, taller spire and amber colour, 

 and we may call them G. kanamarni succinea. 



SUMMARY— ON JAPANESE MARINE MOLLUSCA (XXIV) 



MARGINELLID.L. 



Marginella sp. pi. i, figs. 1, 2. 



Jap. name, Kogome-gai n. n. 



Loc, Ogasawara. 

 Marginella (Volvaria) sp. pi. i, figs. 3, 4. 



Jap. name, Makura-kogome n. n. 



Loc, Kikai-gashima. 



Marginella (Crj'piospira) sexplicata Dunker. 



Tryon, Man. Conch, vol. v, p. 31, pi, 9, fig. 74. 

 Loc, Japan (Dunker). 



OUV1DM [OLIVINE.] 



Olivella Up/a Duclos. pi. i, figs. 9, 10. 



Tryon, Man. Conch, vol. v, p. 69, pi. 16, figs. 411, etc. 

 Jap. name, Mushi-botaru Moku-hachi-fu. 

 Loc, every coasts of Japan. 



