— 30 — 



Gomplionema Ag. (iSM), CI. Syn. I, p. 178. 



8. (J. parvuliiin Ktz. V. H. Syn. tab. XXV, fig. 7. 

 Klong Sarlakpet. 



var. inicro|uis Ktz. V. FI. 1. c. figs. 4 — 5. 



Klong Majum, Lem Dan. 



Area: the main species ubiquitous, var. microinis: Europe, America. 



Obs. In a sample from Lem Dan I found specimens of G. parvalum, 

 which are nearest to var. subccqjitafa (V. H. 1. c. fig. 11), but propor- 

 tionately broader. In V. H.'s figure the rate between length and breadth 

 is 13:3; in the present form it is 14 : 5. 



9. a. gracile Ehr. forma major V. H. Syn. tab. XXIV, fig. 12. 

 var. naviciiloides (W. Sm.) Grun. V. H. I.e. figs. 13 — 14. 



Klong Prao, Klong Munse, Klong Son, Koh Samit, Lem Dan. (15 samples.) 

 Area: Europe, America, Java, New Zealand. 



10. tl. entolejuin Ost. sp. nov. tab. nost. fig. 4. 



L. up to 0,065 mm., B, up to 0,oi mm. Strise 10 in 0,oi mm. 



Striae short, marginal. Unilateral stigma present, but hardly 

 visible. By its marginal strise and consequently large area this very 

 characteristic species reminds of G. Brasiliense Grun. (V. H., Syn. 

 tab, XXV, fig. 17) and G. Puiggariatmm Grun. (V, H., 1. c. fig. 18) 

 and perhaps it might be considered an intermediate form between 

 those two species, provided they also possessed an unilateral stigma. 

 But as this is discernible only with difficulty in G. entolejtim, its 

 presence in the two mentioned species is still conceivable. 



Klong Prao, Klong Munse, Klong Majum, Klong Sarlakpet. (5 samples). 



In some of these samples not rare. 



Anomoeoneis Pfitzer (1871) CI. Syn. II, p. 5. 



11. .4. brachysira (Breb.) Grun. V. H. Syn. tab. XII, figs. 8-9. 

 Klong Prao, Klong Son, Klong Munse, Lem Dan. (9 samples). 

 Area: Greenland, Europe. 



12. A. exilis (Ktz.) Grun. V. H. Syn. tab. XII, fig. 11. 

 Lem Dan (4 samples). 



Area: Greenland, Europe. 



Navicula Bory (1822). 



Orthostichce CI. Syn. I, p. 107. 



13. \ cuspidata Ktz. var. lanceolata Grun. cnfr. 0. Miill. El Kab 

 tab. XII, fig. 18; tab. nostr., fig. 2. 



