278 196 
scheidung aller Climacosphenia-Arten ist tiberhaupt héchst prekiér*. In 
settling the above ,area“ I therefore paid for the localities of all the four 
species. The area of C. elongata Bail. is given by de Toni (1. c. p. 740) 
thus: ,in mari rubro frequens in primis ad Laurencias et in mari atlantico 
ad oras Americe borealis et Brasilie: ad algas ex insulis Canariensibus 
et ex insula Guadelupa‘. 
Euphyllodium Shadbolt. 
61. E. spathnlatum Shadbolt. Tab. nostr. I, figs. 3a—e. 
L. up to 0,1 mm., max. breadth up to 0,05 mm. The ribs 
counted at the median line, above-+6, in the middle 4,4, below 3 
in 0,01 mm. Between the ribs square alveoli 6 in 0,01 mm. The 
frustule cuneiform. 
K Kt (22 samples), KCg—KLm (1 sample), s.1. (2 samples). 
Area: Mediterranean, Adriatic, the coasts of England and America borealis, 
Ile San Thome, Madagascar, Funafuti, Malay Archipelago, Ceylon, Nankoori, 
Samoa, Hawaii. 
I think that E. spathulatum is identical with Podocystis australica 
Witt (de Toni p. 602) and P. africana Leud. Fortm. (L.F. Afr. occid. 
p. 31, tab. VI, fig. 2). According to de Toni both P. africana and P. 
australica are small forms, their maximal length being 0,04 mm. The 
present form is larger, and thus it agrees well with the figure by Grunow 
in Wien. Akad. 1862, tab. X, fig. 18 which (measured on the figure) shows 
the dimensions L. c.0,1 mm., B. 0,05 mm. The form from Nankoori 
(Grun. Novara Exp. tab. 1 A, fig. 9) is still somewhat larger and by Leud. 
Fortm. (l.c. p. 31) the dimensions of £. spath. are given as L. 0,16 mm., 
B. 0,09mm. and of P. africana as L. 0,29 mm., B. 0,11 mm. However 
must be added, that the figures of Leud. Fortm. shows less dimensions. 
Fragilarieae. 
Plagiogramma Grev. 
62. P, Atomus Grev. Grev. South Pacific. tab. XII, fig. 9. A.S. Atl. 
tab. CCXI, fig. 20. 
KKt (2 samples). 
Area: Woodlark Islands, Ceylon, Java. 
63. P. decussatum Grev. A.S. Atl. tab. LXXVI, figs. 28--29. 
Found only in a sample from K Kt. 
Area: Virginian Islands, St. Helena, Sharks Bay, Madagascar, Zanzibar, 
Labuan, Ceylon, Java. 
64. P. Gregorianum Grev. A.S. Atl. tab. CCIX, fig. 35. 
K Kt; LN (6 samples). 
Area: Greenland, Europe, Honduras, Ceylon, Samoa. 
