94 



ooo6 in length, obscurely bifid at the free tips and in equal 

 num: er lo the rays 



From Sendai and "Yedo, Japan. 



9. Campylodiscus vitricavus, Temp, et Brun. 



Diat Foss. Japan., p. 30, pi. II. f. 8. Brun. Coll., No. 2S63. 

 Group of the Stri 

 Dimensions : — 



Diam. of valves, from 0056 to 0-065 ro.m. 

 " Long diam. of area, 0020 to 0030 m.m. 



Short diam. of area, 0*013 m.m 



Length of rays, 0016 m.m. 



Breadth of inter-radials, 0005 m.m. 



Valves very slightly oval, terminating in small hyaline, globu- 

 lar, buttons. Area small, elliptical. Ra)s. 20 to 24. simple, starting 

 from a marginal bead. Inter-radials smooth. Striae radiating 

 from a median longitudinal line. Striaj equal to Rays in number. 

 Striae continuous with rays without any intervening blank space. 

 Outer rim striate. 



This diatom, which is not rare in the Sendai deposits, has no 

 affinity to C. Hodgsoni, with which Messrs. Tempere and Brun 

 would ally it. 



10.— Campylodiscus hypodromus. Brun. Coll., 2138, 

 C. Angu/aris, Greg. 





