KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 27. N:0 3. 171 



Var. haldjiMana G-run. (1888). — L. 0,055; B. 0,04 mm. Upper V. with narrow axial area. 

 Puncta (about 6 in 0,oi mm.) arranged in slightly radiate striee and curved longitudinal rows. 

 The striae end at the margin in triangular, finely punctate spaces. Lower V. with 7 iinely punc- 

 tate striae in 0,oi mm., becoming fainter towards the median line. — Bot. Centrb. 1888 p. 324. 

 V. H. T. N:o 546 C. Morrisii W. Sm. Q. J. M. S. V p. 8 (1857)? G. Haradaw Pant. Ill PI. XXIV 

 f. 368 (1893)? C. Pethoi Pant. Ill PI. XXXVI f. 504 (1893). C. baldjilciana A. S. Atl. CXC 

 f. 7 to 10. 



Marine: Baltjik, foss.! 



Var. BaSana Pant. (1889). — L. 0,o48; B. 0,036. Upper V. with somewhat broader axial 

 area and larger marginal alveoli than in Var. baldjikiana, otherwise similar. — C. Baeana Pant. 

 n p. 59 PL XXIV f. 354. 



Marine: Hungary, fossil! 



Var.? dubia Gkun. (1884). — L. 0,oi8 to 0,03; B. 0,012 to 0,023 mm. Stria; 8 to 11 inO.oi 

 mm. Puncta in the lower V. 14, in the upper 10 in 0,oi mm. Lower V. without marginal rim. 

 ^ Franz Josefs Land D. p. 55. 



Marine: »Tafel Suimpe» (Glrun.). 



Var. calif ornica Grun. (1878). - L. 0,02 to 0,027; B. 0,oi5 to 0,oi6 mm. Upper V. with 

 narrow axial area. Puncta 13 in 0,oi mm., arranged in equidistant longitudinal and transverse 

 rows, the latter interrupted by a broad, marginal area. Lower V. with distinct marginal line. 

 Striae 11 in 0,oi mm. finely punctate, radiate. — G. anibigua var. calif. G-RUN. in CI. M. D. N:o 70. 

 V. H. Syn. PL XXX f. 8, 9. A. S. Atl. CXCI, 40 to 43. 



Marine: California! 



Var. doljensis Pant. (1886). — L. 0,04 to 0,08; B. 0,04 to 0,o59 mm. Upper V. with narrow 

 axial area. Puncta arranged in somewhat undulating longitudinal rows and transverse striat;, 7 

 (at the margin) or 12 (at the area) in 0,oi mm., ending in elongated triangular, finely punctate 

 alveoli. — Pant. I p. 32 PL XVIII f. 161. 



Marine: Hungary, fossil (Pant.). 



Var. maxima Grun. (1863). — L. 0,o4 to 0,09; B. 0,033 to 0,o55 mm. Upper V. with more 

 or less broad, linear axial area. Puncta coarse, arranged in more or less undulating longitudinal 

 and transverse rows, the latter about 6 in 0,oi mm., composed of 3 to 5 puncta and ending in 

 punctate alveoli, which form a broad marginal band, frequently separated by a furrow from the 

 striae. Lower V. thin, with a loculiferous rim (loculi 3 in 0,oi mm.). Striae about 11 in 0,oi 

 mm. finely punctate. — Mastogloia maxima Grun. Verb. 1863 PL IV f. 1 (lower valve). G. Scut, 

 var. fossilis Pant. II p. 59 PL XXIV f. 353; 1890 (upper valve). G. Loremiana A. S. Atl. CXCI 

 f. 28 to 34. 



Marine: Black Sea! Adriatic! Galapagos Islands! Hungary, fossil (Pant.). 



Cocconeis Scutellum is extremely variable and comprises a number of very difi'erent forms, 

 which I, however, am not inclined to separate as distinct species. Many insufficiently described 

 or figured species of Gocconeis and Bhaphoneis are probably mere varieties of G. Scutellum, as 

 G. Porta O'Mbara (T. M! J. VII PL VII f. 7; 1867), G. Grantiana Grev. (T. M. S. N. S. IX p. 72 

 PL VIII f. 18), C. ornata Greg. (D. of Clyde p. 491 PL IX f. 24), G. Grunowii Pant.. (II p. 58 

 PL XXV f. 364; 1889), Bhaphoneis Jonesii O'Mbara (M. J. N. S. Vol. VII PL VII f. 10), Bhapho- 

 neis Moorii. O'Mbara (M. J. N. S. Vol. VII f. 11). Navicula Allmaniana Greg. (D. of Clyde p. 488 

 PL IX f. 21) and G. crebrestriata (Grev. M. J. V p. 9 PL III f. 2 ; 1857) (both perhaps Orthoneis 

 fimbriata), G. boryana Pant. Ill PL II f. 33 (1893) and G. californica var. htmgarica Pant. Ill 

 PL X f. 164 (1893). Gocconeis {ambigua var.?) californica Grun. appears certainly to be a form 

 of G. Scutellum, but G. californica var. melinitica Pant. (II p. 58 PL IV f. 71 PL VII f. 123) repre- 

 sents upper valves, which are much too finely punctate for that species. G. ambigua Grun. (Novara 

 p. 14 PL I f. 9, 22) is doubtful. The fig. 22 appears to represent the upper valve of G. pellucida. 



