Bacillarieae, Naviculaceae, Amphipleura. 227 



1. Amphipleura pellucida (Ehr.?) Kuetz. Bacill. p. 103, t, 3, f. 52, Sp. 985 

 p. 88, Rabenh. Bacill. n. 66, Alg. u. 723 et sub n. 1488, Micr. Journ. 

 VIII, p. 208, W. Sm. Br. Diat. I, p. 45, f. 127, Pritch. Inf. p. 783, 



t. IV, f. 30, t. IX, f. 140 et t. XIII, f. 1, Hendry in Micr. Journ. 

 1861, p. 87, Rabenh. Fl. Eur. Algar. I, p. 143, Borzsc. Bacill. t. B, 

 f. 12, V. H. Syn. p. 113, t. 17, f. 14-15 et A, Brun Diat. Alp. 

 Jura p. 95, t. 4, f. 30, Truan Diat. Astur. p. 47, t. 2, f. 33, Na- 

 vicula? pellucida Ehrenb. Inf. pag. 176, tab. XIII, flg. III, Fru- 

 stulia pellucida Kuetz. in Linn;ea, Synops. Diat. 1833, pag. 15, 

 Alg. Dec. 1834, n. 83, (una cum attenuata), Aulacocystis pellu- 

 cida Hass. Brit. Alg. pag. 437, t. 102, f. 8, Amphipleura inter- 

 media Grun. in M. M. J. 1879, p. 179? — Valvis gracilibus, 80- 

 140 fA. longis, rectis, lineari-lanceolatis, apicibus acutis; rhaphe (?) 

 in media valvse parte non interrupta; nodulo centrali obsoleto,- no- 

 dulis terminalibus valde elongatis; striis transversis aegre conspi- 

 ciendis, circ. 37 in 10 u., longitudinalibus non confertioribus. 



Hab. in aquis dulcibus, in paludibus, fossis, aquariis passim 

 imprimis in Anglia (W. Smith, Hassall, Hendry), Gallia (Brebis- 

 son), Helvetia (Brun), Germania et Austria (Rabenhorst, Gru- 

 now, Kuetzing), Galicia (Gutwinski), mont. Tatricis (Schumann), 

 Polonia (Sypniewski), Bosnia (Schaarschmidt), Rossia (Borzscow), 

 Italia (De-Toni, Castracane), Belgio (Van Heurck), Hungaria 

 (Juratzka), Tyrolia (Heufler, Haussmann), Hispania (Truan), 

 Japonia (Cleve). — Van Heurck (anno 1884) methodo photogra- 

 phico strias transversas hujus diatomeae granulatas seu margaritatas 

 esse demonstravit. 



2. Amphipleura Lindheimeri Grun. in Wien. Verhandl. 1862, p. 469, 986 

 t. XI, f. 11, Rabenh. Fl. Eur. Algar. I, p. 144, Sm. Sp. T. n. 17, 



M. M. J. 1877, t. 195, f. 13, V. H. T. n. 166. — Major, valvis 

 longe rhomboideo-lanceolatis, 1 50- 1 70 - 25, apicibus obtusiusculis, 

 carina media nodulis terminalibus longis, linearibus, canaliculo tenui 

 percursis instructa; striis longitudinalibus subtilissimis, transversa- 

 libus inconspicuis. 



Jlab. in aquis torrentibus ad «Comale Creek» Americae bo- 

 realis, sociis Diadesmide levi, Cerataulo thermali, Syn- 

 edra acuta etc. (Lindheimer) ; ad «Majscowa» Galicia? (Gut- 

 winski). — Ex Grunow io Hedwigia 1867, p. 37 verisimiliter Am- 

 phipleurce pellucidce statum sporangialem sistit. « An huc Amphi- 

 pleura Sullivantii (auct.?) in Habirsh. — ■ Chase Cat. p. 26?». — 

 Var. Truanii V. H. in Truan Diat. Astur. p. 48, t. 2, f. 34-35, Amphi' 



