500 Bacillariese, Nitzschiaee8e, Nitzsciiia. 



12. Nitzschia Baiatonis Grun. in Ci. et Gr. Arct. Diat. 1880, p. 70, 20o«5 

 V. H. Syn. t. 57, f. 28. — Parva, valvis lineari-oblongis, apici- 

 bus conoideo-acutatis, 22::; 8,5; striis transversis punctatis, 16 



in 10 u. I 



Hab. in lacu aBalaton» dicto in Hungaria, raro (Grunow). 



13. Nitzschia limicola Grun. in Cl. et Gr. Arct. Diat. 1880, p. 70, 2007 

 M. M. J. 1880, p. 395, t. 13, f. 10. — Minutissima, valvis 16:= 



8,5, late ovalibus, modice longitudinaliter pHcatis, striis transver- 

 sis levibus, 16 in 10 ■j.. 



Hab. in oryzetis, Savanna (Grunow). 



14. Nitzschia perversa Grun. in Cl. et Moell. Diat. n. 213, Niiz- 200S 

 schia inversa Cl. et Gr. Arct. Diat. 1880, pag. 70, M. M. J. 1880, 



p. 395, t, 12, f. 6. — Valvis late ovatis, apicibus paullo cooicis, 

 42-46 « 22-26, delicate irregulariterque punctatis, plica longitudi- 

 naii lata leni medio 7-8 a., transverse striata, striis nitidis, 11- 

 12 in 10 a. 



Hab. in Brasilia; ad ostium fluvii « Rochelle, Sierra Leone » 

 (Grunow). 



15. Nitzschia angustata (W. Sm.) Grun. in Cl. et Gr. Arct. Diat. 2009 

 1880, p. 70, V. H. Syn. p. 172, t. 57, f. 22-24, Tryblionella an- 

 gustala W. Sm. Brit. Diat. 1, p. 36, t. XXX, f. 262, Rabenh. Alg. 



n. 1541, Fl. Eur. Algar. I. p. 148, Heib. Consp. p. 116. — Valvis 

 exacte angusteque linearibus vel medio leniter constrictis, utro- 

 que fine cuneato-acutatis, 80-90 := 10, striis transversis robustis, per- 

 viis, haud interruptis, circ. 8-13 in 10 u. 



Hab. in aquis dulcibus, ad ripas fluminum per Germaniam, Au- 

 striam, in Helvetia, Pederaontio, Gallia, Anglia, Dania, Belgio et 

 Suecia passim; in lacu Lario (Castracane). — Var. acilta Grun. 

 loc. cit., Tryblionella antiqua Schum.?: minor, angustior, valvis 

 longius acutatis; striis transversis 16-18 in 10 [j.. — Var. curta 

 V. H. Syn. p. 172, t. 57, f. 25, T. n. 376: valvis multo brevio- 

 ribus, apicibus subrostratis. In aquis dulcibus ad u Bruxelles )) Bel- 

 gii (Delogne). 



16. Nitzschia marina Grun. in Cl. et Gr. Arct. Diat. 1880, pag. 70, jo'0 

 V. H. Syn. t. 57, f. 26-27, Nitzschia angusta var. marina Grun. 



in Cl. et Moell. Diat. n. 154, 155. — Valvis linearibus, apicibus 

 rotundatis vel sensim attenuatis, 95-165:^8-9; striis transversis 

 12 Iq 10 ij.., e punctis subtilibus (circiter 19 in 10 y..) et 2 sy- 

 stemata linearum sub angulo acuto intersectarum efficientibus com- 

 positis. 



