153 305 
927. A. Oculus A.S. var. Farcimen A.S. A. S. Atl. tab. XXVIL, fig. 56. 
Found only in a sample from K Kt. 
Area: Campeachy Bay, Seychelles, Samoa, Galapagos. 
298. A. ostrearea Bréb. typica. Temp. & Brun. Jap. tab. IX, fig. 16 
== A. Petiti. 
Found only in a sample from K Kt. 
Area: Europe, Sumatra, Billiton, Labuan, Japan, China. 
— — var. vitrea Cl. A.S. tab. XXVI, fig. 25. 
KKt (4 samples). 
Area: Arctic Oceans, West Indies, Labuan, Japan, New Caledonia. 
In a sample from KKm I found a small Amphora measuring 
], 0,028 mm., b. 0,003 mm., strie 15 in 0,01 mm. In its shape it exactly 
agrees with the species figured by A. S. Atl. tab. XXVI, fig. 16 which 
Cleve (Syn. II, p. 129) regards as identical with Amph. ostrearea Bréb. 
var. vitrea Cl. 
229. A. proboscidea (Greg.?) Cl. Cl. Syn. Il, tab. IH, figs. 19—21. 
Solitary in a sample from LN. 
Area: Portoseguro, Bahia, Java, Bali Sound. 
The form found by me is more capitate than figured by Cleve 
and resembles in that respect A. Kitioni L. Fortm. L.. Fortm. Ceylon 
tab. I, fig. 7. 
230. A. Proteus Greg. A.S. Atl. tab. XXVIL, fig. 3. 
KkKm, KKt, s.1. (6 samples). 
Area: probably ubiquitous. 
231. A. rhombica Kitton. Perag. Diat. de Fr. tab. L, fig. 4. 
Found only in a sample from K Kt. : 
Area: Colon, Mediterranean, Island of Rhea, Sumbava, Sumatra, Macassar, 
China, Java. - 
932. A. spectabilis Greg. A.S. Atl. tab. XL, figs. 18—19. 
KKt (2 samples). 0 
Area: Davis Strait, West Indies, North Sea, Mediterranean, Seychelles, 
Madagascar, Ceylon, Borneo, Macassar, Java, China, Samoa. 
233. A. Terroris Ebr. A.S. Atl. tab. XXV, figs. 17—19, 33, 34—36. 
K Kt (8 samples). : 
Area: probably ubiquitous. 
In two samples from KKt I found a form agreeing with A. monili- 
fera Greg.? in A.S. Atl Tab. XXV, fig. 32 (from Java). As to this form 
Cleve (Syn. Il, p. 122) says that it ,probably is a frustule af A, costata 
or Terroris in the state of division‘. 
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