33 
bo 
Or 
ee 
Divergentes Cl. |. c. p.77. 
25. P. divergentissima Grun. V.H. Syn. tab. VI, fig. 32. 
Solitary in two samples from Lem Dan. 
Area: Spitzbergen, Greenland, N. Europe, Canada, New Zealand. According 
to Cleve (l.c. p.77) an arctic and alpine species. 
26. YP. divergens W. Sm. var. elliptiea Grun. Grun., Fz. Jos. Land 
tab. I, fig. 19. 
Solitary in a sample from Lem Dan. 
Area: Franz Joseph-Land, Greenland, Europe, America, Africa, Australia. 
Tabellariee Cl. Il, p. 81. 
27. VP. stauroptera Grun. Donk., Brit. Diat. tab. XII, fig. 3. 
Klong Prao, Klong Son, Koh Samit, Lem Dan. (6 samples). 
var. interrupta Cl. V.H. Syn. tab. VI, figs. 6—7. 
Lem Dan. 
Area: the main species: Europe, America, Australia. var. interrupta: 
Franz Josef-Land, Europe, America, New Zealand, Hawaii. 
28. P. stomatophora Grun. var. ornata A.C]. A.C). Lule Lappm. 
fig. 3. 
Solitary in two samples from Lem Dan and Koh Samit. 
The present form is somewhat larger than that figured by A. Cleve. 
Area: Lule Lappmark. 
Brevistriate Cl. 1. c. p. 85. 
29. P. brevicostata Cl. A.S. Atl. tab. XLIM, figs. 26—27. 
Lem Dan, Koh Samit. 
Area: Europe, Bengal. 
30. P. parva (Ehr.) Grun. A.S. Atl. tab. XLII, fig. 21. 
Lem Ngob. 
Area: Europe, America, Java, Australia, New Zealand. 
Complexe Cl. 1. c. p. 91. 
31. P. viridis Nitzsch. A.5. Atl. tab. XLII, fig. 14. 
Lem Dan (4 samples). 
var. intermedia Cl. A.S. Atl. tab. XLII, fig. 9. 
Lem Dan. 
Area: the main species ubiquitous. var. intermedia: Europe, Congo, Java, 
Australia. 
