9fl Art. 6. — M. Yokoyama : 



Geuus Bentbioc* Watson. 



99. Bembix crumpii, (Pilsbky). 



Pl. V. Figs. 27, '28. 



Bathybembix crumpii. Pilsbry, Nautilus VI, p. 105, 103, pl. II, fig. 3. Cat. Mar. Moll. 

 Japan, p. 97, pl. XI, fig. 4. 



Only fragments, hut -recognized by a thin shell with two 

 coarse spiral rows of distant spined tubercles with another row of 

 much smaller tubercles close to the upper suture. The hase has 

 either distant crenulated spiral cords or rows of tubercles linked by 

 threads. The specimens are somewhat smaller than that figured 

 by Pilsbky. Rather frequent. 



Fossil occurrence. — Kamakura Zone (Kewaizaka in Kama- 

 kura); Kanazawa Zone (Kanazawa and Teramae); Koshiba. Zone 

 (Koshiba). 



Living. — Japan (Shelly O. Crump). 



100. Bembix convexiusculum, Yokoyama. 

 Pl. V. Fig. 32. 



Shell thin, turbinate, imperforate. Whorls about eight,, 

 rather convex, with a spiral row of granules close to the lower as 

 well as to the upper suture and with the intermediate space 

 smooth. Periphery which is formed by the lower row of granules 

 angulated. Base convex with about five distant subnodose spiral- 

 threads. Aperture subquadrate or subrhombic with the diagonal 

 from front to behind longer than the other. The best, though 

 not the largest, specimen measures 28 millim. in height and 10 

 rnillim. in diameter. Rare. 



This species is easily distinguished from the foregoing by the- 

 want of large spiny tubercles. Rare. 



Fossil occurrence. — Kamakura Zone (Kewaizaka in Kaina-^ 

 kura); Kanazawa Zone (Kanazawa). 



