Fossils from the Upper Musashino of Kazusa and Shimosa. (39 



Family Coliidae. 



Genus DOIiir.fl, Lamarck. 



S4. Ifotitttii litfeostomttttt, Kiister. 



* 



PI. III. Fi^. 10. 



Doliiiin Uiteostomuin. Kiister in Syst. Concb. Cab., vol. Ill, part 1, B, p. 66, pi. 58, fig. 

 2. Lischke, Jap. Meerescoucli., I, p. 65, II, p. 57. Pilsbry, Catal., p. 49. Brauus 

 Geol. Env. Tokio, p. 60. Tokuiiaga, Foss. Euv. Tokyo, p. 17, pi. I. fig. 30. Yoko- 

 yaiua, Foss. Miura Penin., p. 66, pi. IV, tig. 2. 



DoUiDu jiponiciim. Danker, Nov. Conch., p. 104, pi. 35, fig. 36. 



Dolium rarieiiatiDii. Sclirenck, Moll. Aninrl., p. 403. 



Very frequent at some of the localities. 



Fossil occurrence. — Otake, Kioroshi, Shisui, Tega and Shito. 

 Shinagawa in Musashi. L )\ver Musashino of ]Miyata, Yokosuka 

 and Naganunia. 



Living. — Northern, Central and Western Japan. Lidian 

 Ocean (Kiister). 



Family Cypraeidae. 



Genus ERATO, Eisso. 



85. fJt'ato enliosa, A. Adams et Reeve. 

 PI. III. Fiu-. 11. 



Erato callom. Adams anil Reeve, Zool. Voy. S.uuarang, p. 25, pi. 10, fig. 32. Sowerby, 

 Thes. Conch., Ill, p. 82, pi. 219, figs. 35-37. Lisehke, Jap. Meeresconch., II, p. 68. 

 Danker, Moll. Jap., p. 9. Intl. Moll., p. 56. Tryon, Man. Conch., V, p. 9, pi. 4, figs. 

 38, 39. Pilsbry, Cat., p. 52. Tokunaga, Foss. Env. Tokyo, p. 10, pi. I, fig. 12. 



This shell is characterized by A. Adams and Reeve as follows: 

 "Shell pyriform, strong, thickly enamelled, callous; spire subobtuse 

 columella excavated, outer lip distinctly denticulate " 



A few specimens of an Erato ol)tained agree very well with 

 the above description and are, therefore, to be assigned to the same 

 species. 



In Sowerl\y's Thesaurus Cunchyliorum there is a species 



