Fossils from the Upper Musashino of Kaziisa and Saimosa. 77- 



The specimens belong to tlie so-called shoit forms of the 

 species like fig. 6 of Kobelt. 



Fossil occnnvnce. — Otake. Tega. 



Living. — Centi'al Japan (both in lakes and near sea-coasts). 



Family Solariidae. 



Genus SOI.AKIH.'TI, Lamarck. 



«9. Solarium {Philippia) viuf/alum, Kiener. 



PI. III. Fig. 19. 



Solarium {Phiiippia) dwjuhim. Sowerby, Thes. Conch., Ill, Solarium, p. 237, pi. 253 



(IV), figs. 55, 56. Tryou, Man. Conch., IX, p. 15 pi. V, figs. 63, 61. 

 Sulaiiiim cinijtiluni. Kiener, Coq. viv.. Solarium, p. 6, 6a. Pilsbry, Cat., p. 65, 



Shell conical. AVhorls five, very little convex, spirally 

 striate and with two suprasutural cords, the lower of which is at 

 the suture and stronger than the upper which is immediately 

 above. Base somewhat convex with a spiral cord below, and close 

 to the corded periphery, and also several spiral striae on the whole 

 surface. Umbilicus about one-fourth the shell-diameter, with 

 margin l)roadly crenate and divided into two unequal parts by a 

 deep, narrow, spii'al groove, the inner Iteing broader than the 

 outer. Aperture triangular with sides suinewhat curved. Height 

 12 millim. Diameter 19 milHm. Diameter of umbilicus 5 millim. 



I^^ossil occurrence. — Shito (rare). 



Living. — Central Japan. Bonin Islands. Philippines. South 

 Sea. 



1«0. Solaritièti (JPhilippia) psendopet'speetivuin, (Brocchi). 



PI. III. Fig. 20, 



SolariiDH {Philij>pia) })seiid(iperaj>ecticinii. Tryon, Man. Conch., IX, p. 15, pi. 5, figs. 



67, 68. 

 Saht ri Ulli jieifipecticKiii. AVeinkauff, Moll. Mittelm., p. 260. Sowerby, Thes. Conch., III. 

 ' Solarium, p. 235, pi. 254 (V), figs. 83, 84. Sacco, Mull. Terr. Tert. I'iem. et Lig., 

 pt. 12, p. 48, pi. I, figs. 60-65. 

 T ruck u>; j>semlo})eis}>ecti eus. Brocchi, Conch. Foss. Subap., II, p. 359, pi. Y, fig. 18. 



Three examples, one of whicli, though the smallest, is excel- 

 lently preserved. 



