Family NucuUdae. 



Genus :SflI€UL.A, Lamarck. 



331. Nuctila insignis, Gould. 



Kucula imignis. Goiüd, Otia Condi., p. 175. Toknnaga, Foss. Env. Tokyo, p. 56. 

 Yokoyama, Foss. Miura Peuin., p. 17Î'. pk XIX, figs. 7, 8. 



Several specimens, the largest being 20 miliim. in length. 

 Fossil occurrence. — Otake, Shisui, Shito. Oji, Tabata and 

 Shinagawa. Lower Musashino of Koshii)a. 

 Li ving. — North ern Japan . 



Phylum Molluscoidea. 



Class BRACHIOPODA. 



Family Terebratulidae. 



Genus TEREBKATJEtLA, d'Or))igny. 

 332. Terebrafellft eoi'eanica, Adams et Eeeve. 



Terebratella coreanica. Davidson, Monogr. Eec. Brach., p. 81, pi. XIII, figs. 3-9, Dall, 



Amer. Jour. Concb., VI, p. 121. Dnnker, Ind. Moll., p. 252. Pilsbry, Cat., p. 



151. Yokoyama, Foss. Miura Peuin., p. 184, pi. XIX, figs. 25, 28. 

 Terebratida coreanica. Adams and Pieeve, Voy. Samarang, Zook, p. 71, pi. XXI, fig. 



3. Schrenck, Moll. Amur!, u. d. nordjap. Meeres, p. 168. Lisclike, Jap. Meeres- 



eoncli., I, p. 181. 



This is a well known living shell m Japan- As stated by 

 Davidson, its outline is very variable. Li general, the breadth is 

 somewhat less than the height or length, but there are specimens in 

 which the height is much greater than the breadth. As to the 

 mesial depression of the dorsal valve, it is here to be remarked that 

 it is either very shallow or absent in which latter case tlie place is 

 only Hattish. 



The largest of the perfect specimens is 36.5 miliim. in height, 

 but there is an isolated dorsal valve nearly as high, therefore the 

 corresponding ventral must have been over 40 miliim. in height. 



Fossil occurrence. — Shito (frequent). Lower Musashino of 

 Miyata. 



Living. — Northern, Central and Western Japan. 



