K. OKAMUKA. 



Fig. 41. D. Vanhöffenii Ostf. From Prov. Shima. 



a, right-side view ; X 393. 



b, dorsal view of the same specimen ; X 600. 



c, another specimen ; x 600. 



Fig. 42. Phalacroma sp. From Tateyama in Prov. Böshyü. x 390. 



a, lateral ; b, dorsal ; c, ventral views of a specimen. 

 Fig. 43. P. Mitra Schütt. From Prov. Tosa. 



a, lateral ; b, ventral views of a specimen ; X 390. 

 Fig. 44. Diplopsalis lenticula Bergh. From Prov. Tosa. 



a, lateral ; b, dorsal ; c, d, ventral views of a specimen ; the 

 last fig. as seen in a slightly oblique direction ; x 390. 



Plate VI. 



Fig. 45. Trichodesmmm erythraeum Fhrb. From Prov. Tosa. 



a, plants in nat. size, with three tufts of filaments, b, enlarged ; 

 x 56. 



c, filaments ; x 600. 

 Fig. 46. T. Thiebautii Gomont. From Prov. Tosa. 

 a, tuft in nat. state ; X 56. 

 filaments ; x 390. 



Fig. 47. Cannosphaera geometrica Borgert. From Shirahama in 



Prov. Böshyö. x 140. 

 Fig. 48. Aulosphaera labradomnsis Borgert. From Tateyama in 

 Prov. Böshyü. 

 a, fragment ; X97. b, " Radial stacheln ;" X 6oo. 

 c — ./, two knois of the network " Tangential röhren " ; x 390. 

 Imo-. 49. Cyttarocylus Ehrenbsrgii (Clap, et Lachm:) Fol. From 

 Shirahama in Prov. Böshyü. 

 a, x 390 ; />, x 220. 

 Fig. 50. C. Ehrenbergii (Clap, et Lachm.) var. d. Claparedei (v. Daday) 

 Brandt. From Prov. Shima. 

 a, X220; portion of reticulation, X 66o. 



