70 Art. 1. — M. Yokoyaiua .• 



called jE'/'rt^o ZacÄ;'2/7?«rt Gra}' (vul. III. pl. 21Î), figs. 4, 0, 6) described 

 also from Japan. It is said to have " the crenulatioiis of the outer 

 lip not verj' perceptible,'" but in shape it is hardly distinguishable 

 from Erato callosa. Moreover, the specimens of the latter have 

 occasionally the denticulations indistinct. Therefore it is possil^le 

 that the two forms belong to the same species. 



Tokunaga's figure of Erato callosa must be said to i)e not quite 

 correct. 



Fossil occurrence. — Otake (rare), Shito (not rare). Sliinaga\Ya. 



Living. — Central and AVestern Japan. China. 



Family Strombidae, 



Genus STRO.'^IBl'S, Linné. 

 SO. Sfrottthus JftitottteÊts, Reeve. 



Pl. III. Fig. 12. 



Stromlnts japo)üciii>. Eeeve, Couch. Icou., fig. 42. Lischke, Jap. Meerescouch., I, p. 30, 



p]. Y, fig. 7. Tryon, Man. Conch., YII, p. 115, pl. 5, fig. 48. Pilsbry, Cat., p. 55. 

 Stro)tihiia cittfitiis Liune, lar. Duuker, Index Moll., p. 95. 



Two specimens, one of which is 3'oung. The adult specimen 

 agrees quite well with the figure of Lischke, except in the upward 

 prolongation of the expanded outer lip which in the present speci- 

 men does not go up higher than the shoulder of the body-whorl, 

 while in Lischke' s figure it goes much higher, reaching the third 

 whorl from the last. 



The younger specimen which is about 2()millim. high has the 

 outer lip thin and not expanded, the shell thereby assuming the 

 appearance uf a Hemifusvs. Such is also the case with young 

 specimens of the living shell. 



Fossil occurrence. — Otake. 



Living. — Central and AVestern Jajan. Benins er Oga^awara- 

 jima. 



