Bacillarie.T, Fragilariacese^ Fragilaria. 685 



10. Fragilaria oceanica Cleve Arct. Diat. 1873, p. 22, t. 4, f. 25, 27ig 

 Grun. Diat. Fr. Jos. Laiid p. 55, t. 2, f. 14 a-h. — Frustulis aii- 

 guste linearibus, 24 ::; 4,5-5, in filanaenta longa conjunctis; valvis 

 elliptico-linearibus, apicibus rotundatis; striis marginalibus, distiu- 

 ctis, circiter 11 in 10 y.. 



Ilah. ad superficiem maris arctici, sociis Chcetocerotis et Rhi- 

 zosolenice speciebus. — Var. complicata Grun. 1. c. : striis 22-23 

 in 10 a. An Fragilarice arcticce varietas?. 



11. Fragilarla exilis Grun. in Wien. Verliandl. 1863, p. 144, t. 13, 2717 

 f. 21. — Frustulis (e facie connectivali visis) latiusculis, in fascias 

 brevissimas conjunctis, 5-11;= 5-7,- valvis lineari-oblongis, 2,5 [j.. 

 latis, obtusis; striis transversis pseudorhaphe interruptis, tenuissi- 

 mis, 18-20 in 10 u. 



Hah. ad Chae to mo r p h as ex insulis Antillis. 



12. Fragilaria capensis Grun. in Wien. Verhandl. 1863, p. 143, t. 14, 2718 

 f. 5 a-Cj Alg. Novara p. 2. — Minor, frustulis in fascias brevissi- 

 raas conjunctis, latiusculis, 15-25 =«^ 4,5-9; valvis late lanceolatis,- 

 striis transversis tenuibus, 13yo-15 in 10 u.., pseudorhaphe inter- 

 ruptis. 



Hah. in arenosis ad Caput Bonce Spei Africse australis (Frauen- 



FELD). 



13. Fragilarla tenuicollis Heib. Consp. p. 62, t. 5, f. Xlll, Rabeoh. 2719 

 Fl. Eur. Algar. I, pag. 119. — Valvis lanceolatis, 25-45 u.. lon- 



gis, sub polis valde constrictis, apicibus dilatatis rotundatis, ca- 

 pitato-porrectis; striis transversis remotis, crasse punctatis, raedio 

 pseudorhaphe interruptis, circiter 10 in 10 [j..; frustulis e facie con- 

 nectivali visis rectangularibus, costis tenuiter inflatis, subparalle- 

 lis, suturis undulatis. 



Hah. in aquis dulcibus Daniae (Heiberg). 



14. Fragllaria bituminosa Pant. Foss. Bacill. Ung. II, p. 65. — Fru- 2720 

 stuiis concatenatis, lateribus planis, ad marginem grosse punctatis, 



ad polos obtusis; valvis oblongis, longitudine variabilibus, apicibus 

 rotundatis, margine serie puuctorum oblongorum ornatis. 



Hah. fossilis in Hungaria (PantocSEk). — Discernendae sunt 

 varietates sequentes in Hungaria fossiles. — Var. curta Pant. loc. 

 cit. t. 13, f. 228: frustulis subtetragoniis, 7,5 a. altis, 6,5 y.. la- 

 tis, punctis 10 in 10 a. — Var. elongata Pant. 1. c. t. 13, f. 231, 

 233, 236: frustulis elongatis, apicibus obtusis, 20-35^:4.5-7,5, pun- 

 ctis marginalibus 6%-7Y2 in 10 a. — Var. minor Pant. loc. cit. 

 t. 7, f. 129: frustulis 20=^5,5, punctis marginalibus l^/o-S^/^u^ 10 



