284 132 
(. dirupta Greg. var. Sigma Pant. A.S. Atl. tab. CXCVI, fig. 11. 
Found only in a sample from K Mn. 
Area: Ceylon. 
97. ¢€. gibbocalyx Brun. Brun Esp. nouv. tab. XVII, fig. 4a. 
Solitary in a sample from KKt. Only epitheca met with. 
Area: West Indies, Zanzibar, Mauritius, Manilla, Indian Ocean, Galapagos, 
Madagascar. 
98. (. heteroidea Hantzsch. Hantzsch Ost. Arch. tab. VI A, fig. 10. 
A.S. Atl. tab. CXCVI, 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 & KMn—CLt) I found a Cocconeis identical 
with a species from Hokkaido in A. S. Atl. tab. CXCV, fig. 19, which 
probably is to be regarded as nearly allied to C. heteroidea Hantzsch 
var. curvirotunda Temp. & Brun. 
99. (. insignis Janisch. A.S. Atl. tab. CXCVII, fig. 3. 
Solitary in a sample without habitat. 
Area: Gazelle Expedition. 
100. @. pellucida Hantzsch. Hantzsch Ost. Arch. tab. VI, fig. 11. 
K Kt (1 sample). 
Area: Behring Island, Madagascar, Nicobar Island, Singapore, Java, Suma- 
tra, Samoa, Tahiti, Hawaii, Pacific Ocean, New Zealand. 
101. ( pinnata Greg. Perag. Diat. d. Fr. tab. Il, fig. 12. 
Found only in a sample from KM—CLt. 
Area: Arctic Ocean, North Sea, Mediterranean, Adriatic, Madagascar, Sey- 
chelles, Island of Rhea. 
102. €. pseudomarginata Greg. V.H. Syn. tab. XXIX, figs. 20—21 
KKt, KM—CLt, LN, s.1. (7 samples). 
Area: Seems to be ubiquitous. 
— — var. intermedia Grun. A.S. Atl. tab. CXCIV, fig. 1. 
Found only in a sample without habitat. 
Area: dispersed among the main species. 
103. €. qvarnerensis Grun. A.5. Atl. tab. CXCIIL, figs. 20—21 
Found only in a sample from KKt. 
Area: Arctic Ocean, North Sea, Mediterranean, Adriatic. 
