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



Var. baldjiJciana Grun. (1888). — L. 0,05 5; B. 0,04 mm. Upper V. with narroAv axial area. 

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

 The striifi and at the margin in triangulär, finely punctate spaces. Lower V. with 7 finely punc- 

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

 V. H. T. N:o 546 C. MorrisH W. Sm. Q. J. M. S. V p. 8 (1857)? C. Haradace Pant. III Pl. XXIV 

 f. 3(J8 (1893)? C. Pethöi Pant. Ill Pl. XXXVI f. 504 (1893). C. baldjiJciana A. S. Atl. CXC 

 f. 7 to 10. 



Marine: Baltjik, foss. ! 



Var. Baeana Pant. (1889). — L. 0,o4 8; B. 0,036. Upper V. with somewhat broader axial 

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

 II p. 59 Pl. XXIV f. 354. 



Marine: Hungary, fossil! 



Var.? dubia Grdn. (1884). — L. 0,oi8 to 0,03; B. 0,oi2 to 0,023 mm. Strife, 8 to 11 in 0,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 Siiimpe* (Grun.). 



Var. californica Geun. (1878). - L. 0,o2 to 0,027; B. 0,oi5 to 0,oi6 mm. Upper V. with 

 narrow axial area. Puncta 33 in 0, 01 mm., arranged in equidistant longitndinal and transverse 

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

 Strise 11 in 0, 01 mm. finely punctate, radiate. — C. ainbigita var. calif. Grun. in Cl. 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,o4 to 0,o8; B. 0,u4 to 0,059 mm. Upper V. with narrow 

 axial area. Puncta arranged in somewhat undulating longitndinal rows and transverse striae, 7 

 (at the margin) or 12 (at the area) in 0, 01 mm., ending in elongated triangulär, 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 0,0,^55 mm. Upper V. with more 

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

 and transverse rows, the latter aboixt 6 in 0, 01 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 

 striEe. LoAver V. thin, with a loculiferous rim (loculi 3 in 0,oi mm.). StricC about 11 in 0,oi 

 mm. finely punctate. — Masioyloia maxima Grun. Verh. 1863 Pl. IV f. 1 (lower valve). G. Scut. 

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

 f. 28 to 34. 



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



Cocconeis ScuteÅlum is extremely variable and comprises a number of very difPerent forms, 

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

 or figured species of Cocconeis and lihaphoncis are probably mere varieties of G. Scutellum, as 

 G. Porfii 0'Meara (T. M. J. VII Pl. VII f. 7; 1867), G. Grantiana Grev. (T. M. 8. N. S. IX p. 72 

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

 Pl. XXV f. 364; 1889), Ehaphoneis Jonesii 0'Meara (M. J. N. S. Vol. VII Pl. VII f. 10), RJiapho- 

 neis Moorii 0'Meara (M. J. N". S. Vol. VII f. 11). Navicula Ällmaniana Greg. (D. of Clyde p. 488 

 Pl. IX f. 21) and G. crebrestriata {Gkev . ■ M. J. V. p. 9 Pl. III f. 2; 1857) (both perhaps Orthoneis 

 fimbriata), G. boryana Pant. III Pl. II f. 33 (1893) and G. californica var. hungarica Pant. III 

 Pl. X f. 164 (1893). Cocconeis {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. C. ambigua Grun. (Novara 

 p. 14 Pl. I f. 9, 22) is doubtful. The fig. 22 appears to represent the upper valve of G. 2)dlucida. 



