Bacillariese, Fragilariacea}, Rhaphoneis. 705 



}{ab. iii strato tertiario pr. «Mors» in Dania (A. Grunow). 

 20. Rhaphoneis Lancettula Grun. in Pant. Foss. Bacill. Ungarns I, 2839 

 p. 35, t. XXVII, f. 271, Fragilaria amphiceros Ehrenb. Mikro- 

 geol. t. XVIII, f. lll.t— Valvis anguste-lanceolatis, 53-83 ^ 7,3- 

 10, polis subproductis, linea media vix conspicua,- punctis in lineas 

 parallelas transversales b-o^f^ in 10 a. et longitudinales dispositis. 

 Hab. in stratis tertiariis prope «Richmond et Petersburgh» 

 Amer. bor. nec non «Naparima» in ins. Trinitatis Antillarum (A. 

 Grunow). — Var. jutlandica Grun. I. c. p. 35, t. XXX, f. 321 : 

 valvis angustioribus, 38-50 =; 4,5-5, polis ante apices subcapitatos 

 parum constrictis; striis transversis paucipunctatis, 7-9 in 10 p.. 

 In stratis tertiariis pr. «Mors» Jutlandiae (A. Grunow). 



30. Rhaphoneis? superba (Jan.) Grun. in Wien. Verhandl. 1862, 2840 

 p. 382, Cocconeis superba Jan. Guan. p. 2, t. II, f. 8 (valva su- 

 perior). — Valvis late ovato-ellipticis, granulatis, granulis in series 

 arcuatas, circa pseudonodulos terminales semicirculariter incurvas 

 dispositis, rotundatis, aBquimagnis. 



Hab. fossilis in Guino «Angamos» (Janisch); viva ad Macro- 

 cystiden piriferam ox oris Peruviae (Grunow). — An novi 

 generis typus? 



31. Rhaphoneis? oregonica Ehr. Mikrogeol. t. 37, II, f. 15, Felsbild. 284i 

 Baciil. in California 1870, p. 59. — Valvis lanceolatis, ventrico- 



sis, ad 40 ::; 16, apicibus obtusis, area mediana lineari latiuscula 

 levi, marginibus striis validis insignibus. 



Hab. fossilis e stratis oregonicis ad «Fallriver» (Ehrenberg). 



32. Rhaphoneis foliacea Ehr. in Ber. Berl. Akad. 1849, p. 85, Fels- 2842 

 bild. Bacill. in California 1870, p. 59 (nomen). 



Hab. fossilis e stratis oregonicis ad «Fallriver» (Ehrenberg). 



33. Rhaphoneis petropolitana Grun. in Pant. Foss. Bacill. Ung. I, 2843 

 p. 36, t. XXVII, f. 268. — Valvis lanceolatis, 29 ::; 10, polis parum 

 productis, obtusis; area levi medio latiore; striis minute punctatis, 

 raarginalibus, brevibus, subradiantibus, 7-8 in 10 y.. 



Hab. in deposito tertiario pr. «Petersburgh» Americae borea- 

 lis (A. Grunow). 



34. Rhaphoneis? biserlata Grun. Foss. Bacill. Ungarns I, pag. 35, 2844 

 t. XXVII, f. 263. — Valvis linearibus, 46-80 ^ 7-8, polis rotun- 

 datis, seriebus duabus punctorum magnorura raarginalium 4^2-5 



in 10 w. ornatis, polis minute punctatis. 



Hab. in deposito tertiario Richmondiano «Shokoe Bill» in Amer. 

 boreali. — Forte novum genus sistit. 



