Fossils f I Olli the Upper Mueashiiio of Kazusa and Shimosu. 199 



;{33. TerehrateUa pulvitiata, (Gould). 



TerehrateUa puhinata. Davidsou, Monogr. Eec. BracL., p. 90. pl. XVI, fig. IB. Dali. 



Amer. Jour. Concli., VI, p. 117. Yokoyama, Foss. Mhira Peniii., p. 185, pl. XIX, 



fig. 26. 

 Terehratxda {IValdheimia) jndvinata . Goultl, Otia Coucb., pp. 97, 255. 



A few specimens which are all smaller than the one 

 figm"ed by Davidson. The largest measures 13.5 millim. in height, 

 125 milhm. in breadth and 6 millim. in thickness. The h'ontal 

 edge of one of the specimens is a little more sharply rounded than 

 in the others, a variation which must be admitted in a group of 

 animals like the Brachiopods. 



Fossil occurrence. — Shito. Lower Musashino of Miyata. 



Living. — Puget Sound, Washington. 



Geuiib EfJDESIA, King. 

 334. tJuilesia grayi, (Da\ idsoii). 



Pl. XVII. Figs. 11, 12. 



Eudesia yrayi. PiJsbry, CataJ., p. 152. 



Waldheimia grayi. Davidson, Monogr. Rec. Brach., p. 54, pl. X, tigs. 1-4. Dunker, 



Ind. Moll., p. 252. Brauns, Geol. Env. Tokio, p. 58. Toknnaga, Foss. Env. 



Tokyo, p. 69, pl. IV, fig. 8. 

 Terehratida (JValdheimia) (jrayi. Sclireuck., Moll. Amurl. ii. d. uordjap. Meeres, p. 465. 



A few isolated valVes. 



This shell is very variable in outline. The ventral valve 

 which is very convex maj' be " squarely pentagonal " as Davidson 

 saj^s, or longitudinally oval. The dorsal valve which is only little 

 convex and somewhat depressed in the middle is usually subtrian- 

 gularly semicircular. Both valves are furnished with strong, 

 angular, radiating ribs which often l)ifurcate. The strongest ribs 

 are in the middle of the valves. 



Fossil occurrence. — Shito. Shinagawa. 



Living. — Northern, Central and Western Japau. California. 



