14 



Art. 1.— M. Yokoyania 



Famihi Chamîdae. 



258. Chauia semipurpurata 

 Lke. 



Family CarcHtidae. 



259. Yenericardia cipangoana^ 

 Yok. 



260. Yenericardia ferruginea 

 Ad. 



261. Venerioardia toneana 

 Yok. 



Familij Astartidae 



262. Astarte borevlis Cheiii. 



263. Astarte hakodatensis Yok. 

 Family Crassateliidae. 



264. Crassate]la oblongata 

 Yok. 



265. Crassatella kioroshiana 

 Yok. 



266. Crassatella heteroglypta 

 Plis. 



Family Cyrenidae. 



267. Corbicula sandaiformis 

 Yok. 



268. Corbicula kobeiti Yok. 



Family Flcurophoridae. 



269. Coralliophagacorallio- 

 phaga Chem. 



270. Trapezium nipponicum 

 Yok. 



271. Trapezium veutricosum 

 Yok. 



272. Trapezium liratum E,ve. 



Family Cuspidariidae. 



273. Cuspidaria ligula Yok. 



Family Lyonsiidae. 



274. Lyonsia prœtenuis Dkr. 



275. Entodesma naviculoides 

 Yok. 



Family Myochamidae. 



276. Myodora fiuctuosa Gld. 



277. Myodora reeviana Sm. 



Family Thraciidae. 



278. Thracia papyracea Poli. 



LIVING 



Central to Southern Japan. 



Central and "Western Japan. 

 (Fossil in Miocene of Hokkai- 

 do). 



Central .Japan. 



North. Japan. Arctic Seas. Bri- 

 tain. (Fossil in English Crag.) 



Northern Jajjan. 



+ I 



Central and Western Japan. 



Central .Japau. 

 Central Japan. 



Central and "Western Japan. 



Red Sea. "W. Indies. 

 Central and Western Japan. 



Central Japan. 



+ Western Japan. 



+ + + 



+ . . I Western Japan. 



+ + ' Western Japan, China. 



+ 1 Norway to Mediterranean. 



