Gutwiriski. Ein Beitrag zur Kenntniss der fossilen Diatomaceen Bosniens. 
683 
Familie: Fragilariaceae (Kütz. 1844), De-Toni [1S90 ein.]. 
Genus: Synedra Ehrenb. [1830]. 
32. S. Vaucheriae Kütz. V. Heurck, Synop., tab. XL, fig. 19. 
33. S. Ulna (Nitzsch) Ehrenb. V. Heurck, 1. c., tab. XXXVIII, fig. 7. Long. = 95p; 
lat. = 4 4 p; Striae .9*9 in 10 p. 
*34. S. Sceptrum Gutw., Materyaly do flory glonöw Galicyi, Pars II, 1890, p. 34, tab. 1, 
fig. 29. 
var. mesolepta Gutw., Materyaly do flory glonow Galicyi, Pars III, 1892, p. 56. 
Forma fossilis nov. for. 
Forma typo strictior ; valvis media in parte (maryine haud angulatim 
prominente) paullulo inßatis, sensim sensimque apices versus attenuatis, ante 
polos minus tumidis, demum magis usque ad x / 2 partem latitudinis inflationis 
ultimae in apices rostratos productis. 
Long. = 136 4 p; lat. med. = 5'5 — 6 p; lat. ante pol. tumid. = 3’85 — 4 - 9 p; 
lat. pol. tumid. = 4'4 p; lat. apic. protract. — 2 - 2 p; striae 10 in 10 p. 
*35. S. Acus Kütz. var. delicatissima (W. Sm.) Grün. for. mesoleja (Grün.) V. Heurck, 
Synop., tab. XXXIX, fig. 6 (S. delicatissima W. Sm. var. mesoleja Grün.). Long. 
= 2244 p!; lat. = 5 p; striae 11 — 12 in 10 p. 
Genus: Fragilaria Lyngb. [1819]. 
36. F. virescens Ralfs var. exigua Grün. V. Heurck, Synop., tab. XL1V, fig. 3. Long. 
= 15 4 p; lat. = 4 4 p. 
37. F. construens (Ehrenb.) Grün. De-Toni, Sylloge, vol. II, sect. 2, p. 688. 
var. binodis (Ehrenb.) Grün. V. Heurck, 1. c., tab. XLV, Fig. 25. Long. = 15 - 4 p; 
lat. = 4‘4 p; lat. apic. = 2‘2 p. 
*var. Venter Grün, in V. Heurck, 1. c., fig. 26. Long. 13*2 p; lat. med. — 6’6 p; 
lat. apic. = 2 - 2 p. 
Familie: Euiiotisiceac Kütz. [1844], 
Genus: Cystopleura Breb. 1 1849]. 
38. C. turgida (Ehrenb.) Kunze. De Toni, Sylloge, vol. II, sect. 2, p. 777. Grün., Oest. 
Diatom. 1862, tab. (6) III, fig. 2. 
In Bruchstücken. 
*var. Westermannii (Ehrenb.) Grün., 1. c., fig. 8 b. V. Heurck, Synop., tab. XXXI, 
fig. 8. Long. = 22 p; lat. = 9 p; lat. apic. = 2'2 p; striae 15‘9 in 10 p. 
*39. C. Sorex (Kütz.) Kunze. V. Heurck, Synop., tab. XXXII, fig. 7. 
*40. C. Argus (Ehrenb.) Kunze, var. alpestris (W. Sm.) Grün., 1. c. V. Heurck, 1. c., 
tab. XXXI, fig. 19 sub nomine C. Argus var. amphicephala Grün. 
41. C. Zebra (Ehrenb.) Kunze. De-Toni, Sylloge, vol. II, sect. 2, p. 784. 
*var. saxonica (Kütz.) Grün., Oest. Diatom., 1862, tab. (6) III, fig. 6. Long. — 33p; 
lat. = 9 p; costae 2'7 in 10 p. 
*var. Porcellus (Kütz.) Grün., 1. c., fig. 3 a. Long. = 59’4 p (tantum!); lat. = 9 p; 
costae 3’6 in 10 p. 
42. C. gibberula (Ehrenb.) Kunze. De-Toni, 1. c., p. 786. 
*var. producta Grün., 1. c., fig. 9. Long. = 22 p; lat. — 6'6 p. 
