131 283 
only one at each end of the valve and both situated on the same side 
of pseudoraphe. 
Area of A. Bengal: Bengal. 
92. A. mammalis Castr. Cl. Syn. II, tab. III, figs. 18—14. Tab. 
nostr. I, fig. 14. 
LN 2 samples). 
Area: Galapagos, Madagascar, Macassar Strait, Malay Archipelago. 
I have figured a hypotheca of this species being somewhat irregular 
in its outline because this hypotheca makes it still more probable that 
Greville’s Stauroneis obesa Trans. Bot. Soc. V, VIII, tab. Ill, fig. 12 is 
identical with A. mam. Cast. (enfr. Cl. Syn. Il, p. 187). 
93. A. longipes Ag. forma minor deeussata Perag. Diat. de Fr. 
tab. I, figs. 7—9. 
KKt, KM—CLt (7 samples). 
Area: the main species: the coasts of Europe, Canarian Islands, Java, 
Sct. Paul Islands. f. min. decuss.: Nice (Peragallo). 
Cyclophora Castr. 
94, (. siamensis Ostr. n. sp. Tab. nostr. I, fig. 12. 
L. 0,075 mm., b. greatest 0,007 mm., at the constriction 0,0065 mm. 
Strize not seen. Epitheca linear with slightly capitate apices. Hy- 
potheca like epitheca but contracted in the middle. Terminal nodi 
very small, situated out in apices. 
The present form reminds a good deal Cycl. n.sp in V.H.’s Traité 
des Diat. p. 237, fig. 35, especially in the fact that the terminal nodi are 
situated out in the apices; further it do not possess a perforation in the 
central part like Cyc. tenuis Cast. in Perag.’s Diat. de Fr. tab.I, figs. 27 
—32, the species to which it is nearest in size. 
Area: C. tenuis Cast.: Banyuls, Philippines. C. sp. in V. H. Traité: Labuan. 
Coecconeis Ehb. 
95. €. apiculata A.S. A.S. Atl. tab. CXCVIH, figs. 31—32. 
K Kt, LN (2 samples). 
According to the description of the figure by A. S. quoted above 
C. apic. A.S. is regarded by Grove as identical with C. robusta Leud.- 
Fortm. Ceylon I, fig. 1, which figure however P. T. Cleve — with doubt — 
refers to Achnanthes Lorenziana Grun. (Cl. Syn. Ui, p. 186—187), 
Area: C. apiculata: Gape of Good Hope. C. robusta: Ceylon. 
96. C€. dirupta Greg. var. Fulgur Brun. Brun Esp. nouv. tab. XVIII, 
fig. 3. 
Found only in a sample from KKm. 
Area: Mogador, Cabenda, Magelhans Strait. 
