Bacillarieae, Fragilariaceje, Rhaphoneis, TOt 



levi, elongato-lanceolata,- striis 4-6 V4 in 10 u.., puiictatis. Fossilis 

 ad « Felso-Esztergaly, Kekko, Szakal et Szent-Peter» in Hunga- 

 ria. — Var. parce-punctata Pant. et Grun. 1. c. p. 34, t. XVIII, 

 f. 163, t. XXVII, fig. 270: var. eleganti maxirae similis et formis 

 intermediis cum illa arcte conjuncta, differt area levi multo latiore 

 et striis 5-9 in 10 y.., tri-bi- vel saepe unipunctatis marginalibus, 

 valvis 38-90 » 13-16. Fossilis ad «Szent-Peter » in Hungaria. — 

 — Var. Fmoravica Grun. in Pant. 1. c. p. 34, t. XXX, fig. 322: 

 valvis lanceolatis, 47 » K), polis parum productis,- area levi, latis- 

 sima, punctis 4'/o in 10 y.., utrinque in seriem unicam marginalem 

 dispositis. Fossilis ad «Szakal» Hungarite et pr. «Briinn» Moravise 

 (Grunow). — Var. biharensis Pant. Foss. Bacill. Ung. II, p. 63, 

 t. 17, f. 281: valvis late lanceolatis, 42 ==' 27-28, polis parum pro- 

 ductis, obtusis; striis transversis subarcuatis, l^f.^ in 10 y., grosse 

 punctatis, punctis ^Vg-BYo in 10 a., area mediana levi elongata, 

 lineari. Fossilis ad «Bremia» Huogarise. — Var. subtilior Pant. 

 I. c. t. 22, f. 337 : valvis elongato-lanceolatis, polis obtusis cras- 

 sis; striis 9 in 10 u.., transverse punctatis, punctis 9 in 10 u.., in 

 lineas rectas longitudinales ordinatis; area mediana levi angustis- 

 sime lineari. Fossilis ad «Bremia» Huugarise. 



Species ulterius inquirendse. 



40. Riiaplioneis pretiosa Ehr. in Ber. Berl. Akad. 1844, pag. 87. — ^850 

 Ampla ; valvis late lanceolatis, rhomboideis, ad 55 u.. longis, ut plu- 

 rimum bis longioribus quam latioribus, apicibus sensim in rostrum 

 attenuatis; striis granulatis validis, margaritarum serierum instar, 4 



in 10 u.. 



Hab. in Marylandia AmericEe borealis (Ehrenberg). — Teste 

 Rabenhorst, eadera species ac Rkaphoneis amphiceros Ehr. 



41. Rliaphoneis SCalaris Ehrenb. in Ber. Berl. Akad, 1844, p. 271. 2851 

 — Exilis, lanceolata, ad 25 u. longa, utrinque acuta, striarura et 

 fenestrarum (spatiorum crystallinorum) serie duplici ornata, str. 

 3V2 in 10 y.. 



Hab. ad insulas Bermudense^? (Ehrenberg). 



42. Rhaphoneis indica Ehreub. in Ber. Berl. Akad. 1844, p. 365. — 5352 

 Elliptico-lanceolata, valvis ad 52 u.. longis, apicibus obtusis; striis 

 5-5V.> in 10 y.., area media longitudinali lineari-lanceolata levi. 



Hab. in mari indico et japonico (Ehrenberg). 



43. Rhaphoneis Leptoceros Ehrenb. in Ber. Berl. Akad. 1844, p. 87, 2853 

 CocGoneis Leptoceros Ehr. -\m. p. 123, Kuetz. Bacill. p. 74. — 



