VEGA-EXPBDITIONENS V BT EN SKAPLIG A ARBETEN. 



501 



S. formosa Hantzsch (Ost. Ind. Arch. Diat. pag. 19, PI. V, 

 fig. 3). 



Fragilaria? paeifica Grun. (Van Heurck Syn. PI. XLIV, 

 fig. 21—22). 



Fr.? Schwarm Grun. (Van Heurck. 1. c. fig. 24). 



Licmophora Lynghyei (Ktitz) Grun. (Van Heurck Syn. PI. 

 XLVH, fig. 16) Length of the valve 0,065, breadth 0,oo8 mm. 

 Striae at the base 12, in the summit 15 in 0,oi mm. 



Grammatophora oceanica Ehb. Several varieties were found 

 in the Labuan material, among them the var. intermedia Grun. 

 (Van Heurck Syn. PI. LHI, fig. 15) with 26 striae in 0,oi mm. 



Gr. maxima var. Trinitatis Grun. (Bot. Centr. Bl. 1881, Bd 

 VH, Beil. pag. 8) Length 0,o75, breadth 0,oo8 mm. Striae 30 

 in 0,01 mm. 



G. undulata var. gibba Grun. (Van Heurck Syn. XHI B, 

 fig. 17). 



Striatella interrupta Ehb. (Van Heurck Syn. PI. LIV, fig. 8). 



Rhabdonema adriaticum Kiitz. 



Climacosphenia elongata Bail (Smith's Contr. VII, fig. 10 — 11) 

 Striae 21 in 0,oi mm. 



Hantzschia amphioxys var. borneensis CI. Length 0,i mm. 

 Stria 9 in 0,oi mm., composed of distinct puncta; carinal 

 puncta 3 in 0,oi mm. 



H. virgata Roper. (Van Heurck Syn. PI. LVI, fig. 12). 



Nitzschia (punctata var.?) diluviana CI. (Schr. der phys. 

 Oek. Ges. zu Konigsb. Bd XXII, pag. 139) Lanceolate (of the 

 same outline as Nitz. lanceola Grun.) one half of the valve 

 not on the same plane as the other. Striae, composed of dis- 

 tinct and separate puncta, 11 in 0,oi mm. carinal puncta in- 

 distinct. Length 0,o35 mm. Breadth 0,oo8 mm. PI. HI, fig. 67. 



I found this form first in diluvial clay from East Prussia. 



N. panduriformis Greg. (Grun. Arct. Diat. pag. 71). Length 

 0,075 mm. Breadth 0,o2 mm. Striae 17 in 0,oi mm. 



N. Jelineckii Grun. (Arct. Diat. pag. 74). 



N. marginulata Grun. (Arct. Diat. pag. 72). Puncta 10 — 13 

 in 0,01 mm. Striae 20 — 25 in 0,oi mm. Length 0,066 mm. 

 Breadth 0,oi6 mm. Sides of the valve almost parallel. 



N. (vivax var.?) fluminensis Grun. (Arct. Diat. pag. 86. 

 Van Heurck Syn. PL LXII, fig. 3). 



N. (sigma var.?) valida CI. & Grun. (Van Heurck Syn. PI. 

 LXV, fig. 5). 



N. labuensis CI. N. Sp. — Valve elongate; keel eccentric 

 with large and distant puncta, 4 — 5 in 0,oi mm., of which the 



