Fossils from the Miura Peninsula and its Immediate North. 281 



A specimen figured by Adams and Reeve seems not to be a 

 full grown specimen. The posterior depression is not clearly 

 shown in it. 



Fossil occurrence. — Kanazawa Zone (Nojima); Naganuma 

 Zone (Naganuma); Upper Musashino, of Musashi. 



Living. — Central and Western Japan. 



232. Nucnla tokyoensis, Yokoyama. 

 Pl. XIX. Figs. 10, 11. 



Shell small, moderately thick, convex, obliquely subtrigonal, 

 inequilateral; anterior margin sharply rounded, posterior truncated, 

 with the postero- ventral corner subangulate, ventral margin 

 arcuate. Surface concentrically and unequally grooved, with 

 grooves generally small and fine, crossed by fine radiating striae. 

 Area longly cordate, defined by blunt but distinct edges, transverse- 

 ly wrinkled, the wrinkles not quite reaching the edges and some- 

 what bent towards the beaks so that there is a narrow unwrinkled 

 space left along the edges. Lunula indistinctly developed, lanceo- 

 late and also transversely wrinkled. Teeth about twenty in the 

 anterior row and about ten in the posterior. Ligamental spoon 

 oblique, triangular. Inner margin crenulate. Larger diameter 8 

 millim., smaller 7 millim., thickness 6 millim. 



Rare 



Fossil occurrence. — Miyata Zone (Jinya-ato in Kami-Miyata); 

 Naganuma Zone (Naganuma). 



Subkingdom Molluscoidea. 

 Class' Brachiopoda. 

 Family Terebratulidae. 



Genus Terelratttlina^ d'OrbignY. 



233. Terebratulina crossii, Davidson. 



Pl. XIX. Figs. 12, 13, 14. 



Terebratulina crossii. Davidson, Monogr. Rec. Brach., Trans. Linn. Soe. (2), vol. IV, p. 33, 

 pl. HI, figs. 4-6. Yokoyama, Some Brach, fr. Neogene of Koshiba, Jour. Geol. Soc. Tokyo, vol. 

 XVII, no. 201, June, 1910, p. 1, pl. V, figs. 1-3. 



