— 132 — 



C. dirupta Greg. var. Sigma Pant. A. S. Atl. tab. GXGVI, fig. 11. 

 Found only in a sample from KMn. 

 Area: Ceylon. 



97. C. gibbocalyx Bran. Brun Esp. nouv. tab. XVIII, fig. 4 a. 

 Solitary in a sample from KKt. Only epitheca met with. 



Area: West Indies, Zanzibar, Mauritius, Manilla, Indian Ocean, Galapagos, 

 Madagascar. 



98. C. heteroidea Hantzsch. Hantzsch Ost. Arch. tab. VI A, fig. 10. 

 A. S. Atl. tab. GXGVI. figs. 31-37. 



KKt (16 samples). 



Area: West Indies, Colon, Honduras, Seychelles, Madagascar, Mauritius, 

 Nicobar Islands, Singapore. Java, Japan, China, Sandwich Islands, Samoa. 



In two samples (KKt Sc KMn— GLt) I found a Cocconeis identical 

 with a species from Hokkaido in A. S. Atl. tab. GXGV, fig. 19, which 

 probably is to be regarded as nearly allied to C. heteroidea Hantzsch 

 var. curvirotunda Temp. & Brun. 



99. C. insignis Janisch. A. S. Atl. tab. GXGVII, fig. 3. 

 Solitary in a sample without habitat. 



Area: Gazelle Expedition. 



100. C. pellucida Hantzsch. Hantzsch Ost. Arch. tab. VI, fig. 11. 

 KKt (1 sample). 



Area: Behring Island, Madagascar, Nicobarlsland, Singapore, Java, Suma- 

 tra, Samoa, Tahiti, Hawaii, Pacific Ocean, New Zealand. 



101. C. pinnata Greg. Perag. Diat. d. Fr. tab. II, fig. 12. 

 Found only in a sample from KM— GLt. 



Area: Arctic Ocean, North Sea, Mediterranean, Adriatic, Madagascar, Sey- 

 chelles, Island of Rhea. 



102. C. pseudomarginata Greg. V. H. Syn. tab. XXIX, figs. 20— 21. 

 KKt, KM— CLt, LN, s.l. (7 samples). 



Area: Seems to be ubiquitous. 



var. intermedia Grun. A. S. Atl. tab. CXGIV, fig. 1. 



Found only in a sample without habitat. 

 Area: dispersed among the main species. 



103. C. qvarnerensis Grun. A. S. Atl. tab. GXGII, figs. 20— 21. 

 Found only in a sample from KKt. 



Area: Arctic Ocean, North Sea, Mediterranean, Adriatic. 



