133 — 



104. C. Scutellum Ehb. var. parva Grim. Perag. Diat. de Fr. tab. IV, 

 fig. 3. 



KKt, LN, s. 1. (15 samples). 



Area: the main species: ubiquitous, var. parva: Baltic, East Cape, 

 Adriatic (Cleve), North Sea, Belgium, North coast of France, Gulf of Gascony, 

 Bousillon. 



105. C. (Orthoneis) aspera Perag. Perag. Diat. d. Fr. p. 29, tab. V, 

 fig. 13. 



KKm, KKt (5 samples). 



The striæ along the raphe mentioned and figured by Perag alio 1. c. 

 are not so conspicuous in my specimens as in the figure by Peragallo 

 quoted above; but otherwise, i. e. as to the striæ and the character of 

 raphe, they agree well with this figure. 



Area: Villefranche („très rare" Perag.), Madagascar, Samoa. 



106. C. (Orthon.) binotata Grun. Perag. Diat. de Fr. tab. V, fig. 2. 



KKm, KKt, K Mn — CLt, KCg— KKm, LN, s. 1. (22 samples). 



Area: the coasts of Europe, West Indies, Madeira, Red Sea, Nicobarlslands, 

 Island of Rhea, Madagascar, Cape of good Hope, Malay Archipelago, Australia, 

 Tahiti. 



107. C (Orthon.) Clevei Grim. V. H. Syn. tab. XXVIII, fig. 4. 

 Found only in a sample from KKt. 



Area: Barbadoes, Seychelles, Mauritius, Madagascar, Indian Ocean, Samoa. 



108. C. (Orthon.) fimbriata Btw. Perag. Diat. de Fr., tab. V, figs. 3 — 4. 

 KKm, KKt, KM— CLt, LN (15 samples). 



Area: Honduras, Brezil, Mediterranean, Adriatic. Madagascar, Sumbava, 

 Japan, China, Australia, Samoa, Tahiti, Hawaii. 



109. C (Orthon.) Horwathiana Grim. A. S. Atlas tab. GLXXXVIII, 

 fig. 41. 



KKt (2 samples). 



Area: Honduras, Villefranche, Red Sea, Madagascar, Java, Bali Sound, 

 Samoa, Tahiti. 



Naviculoideae. 

 Navicula Bory. 

 Pinmdariece. 



110. N. (Pinnularia) bistriata Leud.-Fortm. Perag. Diat. de Fr. 

 tab. XI, fig. 14. 



Solitary in a sample from KKt. 

 Area: Mediterranean, Ceylon. Labuan. 



