474 Bacillariese, Achnanthace;p, Achnanthes. 



valvis oblongis, raedio coustrictis, apicibus subconoideis, sursum ob- 

 tusis rotundatisve. Ad «Monterey»; in Bengalia. — Var. tumidula 

 Grun. 1. c. p. 19: valvis elongatis, rnedio tumidulis, apicibus rotun- 

 datis. Ad oras Bengalenses. — Var. enervis Petit Diat. Nimrod- 

 Sound p. 5, t. 3, f. 2 (nomen): valva superiori sine rhaphe, striis 

 moniliformibus, valva inferiori rhaphen genuinam medioque stau- 

 rum prjebente. In ostreis ad « Nimrod Sound» Sinarum (Fauvel). 



Varietas ha?c a typo differt valvis apicibus multo latius rotun- 



datis; dimens. 46-68*11-13. 



9. Achnanthes Loczyi Pant. Foss. Bacill. Ung. II, p. 57, t. 12, f. 217. m 

 — Valvis angustis, elongatis, 45-133*3,5-8, polis rotuudatis; striis 

 transversis 8-11 in 10 u.., grosse punctatis. 



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

 Pantocsek, Achnanthidis subsessilis varietas?. 



10. Achnanthes parvula Kuetz. Bacill. p. 76, t. 21, f. V, West. Nouv. 1921 

 Not. crypt. Belg. n. 188, Herb. n. 795, Rabenh. Fl. Eur. Algar. 



I, p. 109, Grun. Arct. Diat. p. 19, V. H. Syn. p. 129, t. 26, f. 25- 

 28. — Parva, 12-20 * 7,5-15, A. pachypode Mont. angustior et si- 

 milis; valvis elliptico-oblongis, versus polos leniter attenuatis, api- 

 cibus obtuse rotundatis, facie connectivali tabellata obtusangula vix 

 curvata; striis delicatissimis, in valva superiori 11-13, in valva 

 inferiori 14-16 in 10 u.., stipite crassiusculo frustulum longitudine 

 jequante vel plus duplo superante. 



Hab. ad E n te rom o rpham compressam aliasque affines 

 algas in aquis subrnarinis maris germanici (Koch) et oras galli- 

 cas boreales (Brebisson) et Belgicas (Westendorp) ; ad « Banter 

 Kirchhof» (Grunow). — Individua 3-12 conjuncta passim oc- 

 currunt. 



11. Achnanthes seriata Ag. in Bot. Zeit. 1827, Consp. Diat. p. 60, 1928 

 Grun. in Cl. et Grun. Arct. Diat. pag. 19, Cymbosira Agardhii 

 Kuelz. Bacill. p. 77, t. 20, f. 3, Sp. p. 57, Rabenh. Fl. Eur. Al- 

 gar. I, pag. 113, Cymbosira minutula Grun. in Wien. Verhandl. 

 1863, p. 146, t. 13, f. 17, Rabenh. 1. c? — Frustulis e facie con- 

 nectivali visis linearibus, leviter arcuatis, subtiliter striatis, apice 

 rotundatis; valvis oblongo-linearibus, medio parum dilatatis, api- 

 cibus rotundato-obtusis, structur^ Achnan/h. subsessilis sed lon- 

 gioribus angustioribusque. 



Hab. ad Ceramieas et Polysip h on i as in mari adriatico 

 pr. Venetias (Agardh); ad litora Leucadiae (Grunow); in mari 

 jonico (Grunow) ; ad oras Americse australis prope « Cayenna » 





