S02 feacillariese, Nitzschiaceae, Nitzschla. 



in Bahusia (Lagerstedt) et Oceano australi (Witt). — Var. mi- 

 nor Grun. 1. c, V. H. Syn. t. 58, f. 4: valvis 13-48^13-17, plica 

 longitudinali breviori; striis transversis 18-20 in 10 a., ceterum va- 

 rietati prsecedenti sirailis. Haud rara cum typo. — Var. delicatula 

 Grun. 1. c. t. 5, f. 92, V. H. Syn. t. 58, f. 5: valvis parvis angu- 

 stisque, apicibus cuneatis, medio subangustatis, punctatis, plica lon- 

 gitudinali raodice latiori punctata. In Fiuraarchia et Spetsbergia, 

 haud raro (Cleve, Grunow). — Var, continua Grun. 1. c, V. H. 

 Syn. tab. 58, f. 6: valvis 16-27:^7-10, plica longitudinali leni et 

 ut superficie valva3 punctata,- striis transversis 20-21 in 10 u.; 

 punctis carinalibus circiter 10 in 10 pt. In raari adriatico et rae- 

 diterraneo, ad Antillas, ins. uSeychellen » etc (Grunow). 



19. Nltzschia Loczyi Pant. Foss. Bacill. Ung. II, p. 73, t. 10, f. 117. 201?, 

 — Valvis elongatis, panduriformibus, 63-126 ^.. longis, ad con- 

 strictionera 18-22 ^. latis. ad polos 20-31 ix. latos obtusis, plica 

 longitudinali donatis; punctis*carinalibus, OVo-^Y^ in 10 u..; striis 

 trausversis punctatis, 16^2-18 in 10 a. 



Hab. fossilis ad «Bory, Bremia» Hungariae. — An Nitzschke 

 panduriformis Greg. varietas? 



B. Puncta carinalla indistincta. 



20. Nitzschia constricta (Greg.) Grun. in Cl. et Gr. Arct. Diat. 1880, 2014 

 p. 71 (var. genuina), Brun Diat. AIp. Jur. p. 106, t. 5, f. 16, V. 



H, Syn. p. 172, t. 58, f. 8, Trijblionella constriota Greg. in Micr. 

 Journ. III, p. 40, t. 1, fig. 13, Rabenh. Fl. Eur. Algar. I, p. 152, 

 non Synedra constricta Kuetz. — Habitu Nitzschice pandurifor- 

 mis, rainus profunde sulcata, punctis carinalibus indistinctis ut in 

 ejusdera varietate continua Grun.; valvis circiter usque ad 50 //. 

 longis; striis transversis punctatis, subtilibus, 16-20 in 10 p.. 



Hab. ad oras et in aquis subraarinis Anglife (Gregory), Italiae 

 (Lanzi), in Helvetia (?Brun), intra Salpani pr. Messanam Sicilise 

 lectara (Castracane), ad Caput Bonae Spei Africae australis (Exped. 

 Novara), ad Caput «Horn» Americee australis (Petit), ad insulara 

 Ceylonam (Leuduger-Fortmorel). — Var. subconstricta Grun. 

 1. c, V. H. Syn. t. 58, f. 7: subraajor, medio paullo angustata; val- 

 vis 60=; 13; striis transversis 12 in 10 a. In mari adriatico (Gru- 

 NOw). — Var. bomblformis Grun. 1. c, V. H. Syn. t. 58, f. 9: major, 

 valvis raedio profunde constrictis, apicibus obtuse porrectis, 67 =; 26, 

 constrictione 15 a. lata; striis transversis 11 in 10 fx. Ad Antillas, 

 pr. uYokohania» Japoniaj (Grunow). — Var. simllls Grun. 1. c: 



