106 THE BOTANICAL MAGAZINE. [yoi. xxi. No, 244 



54, Portion of a chain, 222. 



Fig. 55. Portion of a chain of C.javanicum Cleve, —■) (Tateyama). 



f, indicates the characteristic flexure of the horn. 

 55 a, b. Two different valvular views, ^ ; f, indicates the charac- 

 teristic flexure. (Cape Goza). 

 Figs. 56-63. C. atlanticum Cleve. 



56-57,61-62. Four different chains showing different lengths o 

 cells and directions of horns, 222. (Prov. Tosa). 



58. Portion of a chain having terminal horns, - 1 —. 



(40 miles off Shinshirijima). 



59. Portion of another chain showing different lengths of 



cells, 22°. (40 miles off Shinshirijima). 



60. Valve of the specimen shown in Fig. 59 viewed slightly 



obliquely, 22°. 

 63. C. neapolitana Schroder? ^;'( „ ,, „ „ ). 



Figs. 64 a. C. constrictum Gran, seen from the broader girdle-surface, 

 — p. (40 miles off Shinshirijima). 



64 b. Another specimen seen from the narrower surface, 222. 



(40 miles off Shinshirijima). 



Fig. 65. Portion of a chained specimen of Peragallia meridiana 



Schiitt, 222. (Prov. Tosa). 



Fig. 66. Portion of a chain of Chastoceras denticvlatum Lauder 



showing the anterior terminal cell, 222, (Cape Goza). 



66 a. Another chain showing the posterior terminal cell, 22°. 



(Cape Goza). 



66 b. Cell seen from the valvular side of another specimen, 



22°, (Cape Goza). 



Figs. 67—75. C. peruvianum Btw. 



67. C. peruvianum f. robusta, 222. (Prov. Tosa). 



67 a. Portion of spine, 222. 



68. Specimen resembling C. borcale Lauder, 222 # (Prov.Shima). 

 (59-73, 75. Different forms in different sizes ; Figs. 69-70, -2L ; 



Figs. 71-73, 222 ; Fig. 75, 222. (Prov. Tosa). 



74. Upper valve seen a little obliquely, 222, ( )f f} ), 



Figs. 76-77. C. dehile Cleve. (40 miles off Shinshirijima). 



76. Portion of the spiral chain, """. 



77. Portion of the chain of another specimen seen from the 



narrower girdle-surface, :t 22. 



