— 139 — 



KKt, LN (7 samples). 



Area: Brazil, West Indies, Europe, Red Sea, Madagascar, Gape of good 

 Hope, Java, Borneo, Sandwich Islands, Samoa. 



141. N. (Dipl.) Papula A. S. A. S. Atl. tab. VII, fig. 45. 



KKt (2 samples). 



Area: Gampeachy Bay, Samoa. 



142. N. (Dipl.) ocellata Ost. n. sp. Tab. nostr. II, fig. 20. 



L. 0,037 mm., b. 0,0175 mm. Gostæ 7,5 in 0,01 mm. not alter- 

 nating with puncta. 



Valve elliptic with flattened apices. Lateral areas rather large, 

 with a row of puncta, which are only conspicuous in the middle. 



Solitary in a sample from LN, 



As I have not been able to see alveoli between the costæ I dared 

 not determine this species as a variant of N. (Dipl.) notabilis, which it is 

 always nearest in its whole habit. 



143. N. (Dipl.) Smithi Bréb. A. S. Atl. tab. VII, fig. 17. Perag. 

 Diat. de Fr. tab. XX, fig. 4. 



KKt (2 samples). 



Area: Arctic Sea, Gampeachy Bay, Colon, Europe, Seychelles, Madagascar, 

 Java, Tasmania, New Zealand, Samoa. 



144. K. (Dipl.) suborbicularis Greg. A. S. Atl. tab. VIII. fig. 2. 

 KKt (4 samples). 



Area: probably ubiquitous. 



In a sample from KKt I found a Nav. (Diploneis) agreeing with 

 A. S. Atl. tab. VII, fig. 15 (from Gampeachy Bay), about which Cleve 

 (Syn. I, p. 96) says that it „ seems to belong to Diploneis borealis Grun. B . 



Lyratœ. 



145. N. abrupta Greg. V. H. Syn. tab. X. fig. 4. 

 KKt, (4 samples). 



Area: ubiquitous. 



In one of the samples from KKt I found a form more particularly 

 agreeing with Nav. spectabilis Greg., var. Battrayi Pant., which is con- 

 sidered by Peragallo (Diat. de Fr. p. 132. tab. 21, fig. 38) a variant of 

 Nav. abrupta Greg. 



146. N. clavata Greg. A. S. N. S. D. tab. I. fig. 33. 

 KKt, KCgN (3 samples). 



Area: ubiquitous. 



— — var. indica Grev. Jan. Gaz. Exp. tab. XV, fig. 15. 



