452 Bacillariese, Cocconeidace;e, Cocconeis. 



mediis 6, ad apices circ. 8 in 10 u.., area media irreguiariter et 

 subtiliter punctata, late lanceolata. 



Hab. in sabulosis ad « Martinsica » in fundo maris adriatici 

 (D. Lorenz); in mari nordico (A. Schmidt); ad oras Groenlandue, 

 Spetsbergise et Finmarchiae (Cleve), Bahusise (Lagerstedt). — Sec. 

 Lagerstedt fortasse huc pertinet Pinnularia Allmaniana (Greg.). 



C. Valva superior longitrorsum striata, striis delicatis. 



42. Cocconeis Pediculus Ehrenb. Infus. p. 194, t. 21, f. 11, Mikrogeol. ix-n 

 t. 34, XII, b, f. 1, Kuetz. Bacill. pag. 71, t. 5, f. IX, 1, Rabenh. 

 Siissw. Diat. p. 27, t. 3, f. 1, Alg. n. 867, Fi. Eur. Algar. I, p. 98, 

 W. Sm. Br. Diat. I, p. 21, t. 3, f. 31, Pfitz. Bac. p. 87, t. 6, f. 8, 

 Borzsc. Bac. t. 1, f. 13, t. II, f. 5-6, V. H. Syn. pag. 133, t. 30, 

 f. 28-30, Sm. Sp. T. n. 76, Eul. Diat. n. 22, Petit List. t. 187, 

 f. 1, Brun Diat. Alp. p. 31, t. 3, f. 22, Cocconeis communis Heib. 

 Consp. Diat. Dan. pag. 98 p.p., Fruslulia Lens Breb., Cocconeis 

 Kuetzingii Breb., Cocconeis patavina Menegh. mscr. in Kuetz. 

 Sp. p. 50 (ut synonyma). — Valvis ex eliiptico subrhoinboideis, 15-30 

 u.. longis, valde arcuatis, valva inferiori subradiatira striato-pun- 

 ctata, coronula punctorum vel costarum maxime abbreviatarum in- 

 tramarginali plus minusve evoluta, hinc inde inconspicua, rhaphe 

 recta, nodulo centrali rotundato, valva superiori longitudinaliter 

 lineata, lineis e punctis minutis irregularibus compositis. 



Ilab. imprimis in aquis dulcibus, frequenter. — Var. genuina 

 Grun. Alg. Novara pag. 15, Cocconeis Pedicuhis Ehr. in Kuetz. 

 et W. Sm. 1. c. Cfr. supra: latiuscula, subrhombea, plerumque 

 valde flexuosa. In aquis dulcibus (raro marinis) fere totius orbis; 

 in Europa frequenter ; ad Pithophoram Roetteleri pr. « Rio 

 Janeiro » BrasilicG; ad Cladophoram Eckloni e Capite Bonae Spei 

 (Exp. Novara) ; in Mongolia (Przewalski sec. Schaarschmidt). - 

 Ad hauc speciem Grunow duxit ut varietatem Cocconeidem Placen- 

 /w/ttm Ehr., quam vero, suadente Van Heurck, distinctam teneo. Coo- 

 coneis Pediculus differt quod valva superior zonam hyalinam medio 

 angustatam pr»bet, dum Cocconeidis PiacenhUce Ehr. valvasuperior 

 zonam hyalinam in medio valvse ampliatam pnebet; strias transversa; 

 in hujus valva inferiore circ. 22, in illius circ. 16-17 in 10 u.. — 

 Var. salinarum Pant. Foss. Bacill. Ung. II, pag. 58, t. 27, f. 393: 

 Valvis 21-22-12-13, subtilius striatis, striis 25 in 10 />t. Fossilis 

 ad c. Abauj-Szanto » Hungaria3. 



43. Cocconeis salina (Kuetz.) Rabenh. Fl. Eur. Algar. I, p. 99, Brun 1842 



