Gutwiiiski. Ein Beitrag zur Kenntniss der fossilen Diatomaceen Bosniens. 
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7. N. limosa Kiitz. var. genuina Grün., Naviculaceae, tal). (3) V, tig. 8 b. Long. = 44 g-, 
lat. = 132 g. 
8. N. gibberula Kiitz. (= N. limosa Kiitz. var. gibberula Grün.) V. Heurck, 1. c., 
tab. XII, tig. 19. Long. = 62 g- lat. — 13 - 2 g. 
9. N. Bacillum Ehrenb. V. Heurck, Synop., tab. XIII, tig. 8. Long. — 48'4 g) lat. 
= 13 2 g. 
*10. N. bacilliformis Grün, in Cleve et Grün., Arct. Diatom. 1880, p. 44, tab. II, tig. 51. 
V. Heurck, Synop., tab. XIII, tig. 11. Long. = 33 g- lat. = 9 g. 
*11. N. Pupula Kiitz. V. Heurck, tab. XIII, tig. 15. Long. = 24‘2 g ; lat. = 8’8 g. 
12. (?) N. Atomus (Kiitz.) Grün. V. Heurck, Synop., tab. XIV, tig. 24 (? !). 
Huc fortasse adnumeranda sit Navicula valvis ellipticis 18 g longis et 
0 g latis, margine duplici linea circumdato, nodulis apicalibus minutis puncti- 
formibus, nodulo mediano submagno propter strias medianas paullo abbreviatas 
transverse lineari , striis distinctissimis radiantibus, lineam medianam simplicem 
subattingentibus, non punctatis, circa 16 in tota cellula i. e. 8'8 in 10 g. 
Unam tantum cellulam observavi! 
Genus: Frustulia Ag. [1824], 
13. F. rhomboides (Ehrenb.) De-Toni, Sylloge algarum, Vol. II, Sect. 1, pag. 277. 
var. saxonica (Rabenh.) De-Toni, 1. c. (= Vanheurckia crassinervia Breb.) V. 
Heurck, Synop., tab. XVII, tig. 4. Long. — 51 p, lat. = 15'4 g- striae 16 
in 10 g. 
Familie: Cyiiibellaceae (Kütz.) Grün. [1860], 
Genus: Cymbella Ag. [1830]. 
*14. C. cuspidata Kiitz. V. Heurck, Synop., tab. II, tig. 3. Long. = 95 g\\-, lat. = 33 g\ 
striae 8T in 10 g media in parte, 10 in 10 g ad apices. 
Praeter typum numerosissime formas observavi, quae plus minus cum 
figura 50 et 58 in A. Schmidt, Atlas der Diatomaceenkunde, Taf. IX congruae 
sunt, nonnunquam autem marginem dorsiudem media in parte lenissime gibbo- 
sum habent, semperque minores sunt. Longitudo enim earum 80'8 — 35-2 g, 
latitudo autem 13 — 14‘3 g est. Striae transversae 11‘3 in 10 g. 
15. C. obtusa Greg. V. Heurck, Synop., tab. III, tig. 1 a. Long. — 25 g m , lat. = 7'7 g. 
*16. C. subaequalis Grün, in V. Heurck, Synop., tab. III, tig. 2. Long. = 29 g- lat. = 9 g. 
*17. C. obtusiuscula Kütz., A. Schmidt, Atlas, tab. IX, tig. 49 (non C. leptoceras [Ehrenb.] 
Rabenh.!) Long. = 29^; lat. — 12 g ; striae 7’2 in 10 g. 
18. C. lanceolata (Ehrenb.) Kirchn. V. Heurck, 1. c., tab. II, tig. 7. Long. = 121 g- 
lat. == 26‘4 g ; striae 7’2 in 10 g. 
19. C. cymbiformis (Kütz.) Breb. V. Heurck, 1. c., tab. II, tig. 11. Long. = 57 - 2 g- 
lat. = 13'2 g- lat. apic. = 4'4 g ; striae 10'9 in 10 g. 
20. C. Cistula (Hempr.) Kirchn. V. Heurck, 1. c., tab. II, tig. 12 et 13. Long. — 66 g- 
lat. = 20 p) striae 9 in 10 g. 
var. maculata (Kiitz.) Grün. V. Heurck, Synop., tab. II, tig. 16. 
*21. C. americana A. Schm. var. acuta , A. Schmidt, Atlas, tab. LXXI, tig. 77 — 78. 
Huic speciei, quae tantum ex icone nota est et diagnosi caret (Ct’r. De- 
Toni, Sylloge algarum, vol. II, sect. 1, p. 369, Nr. 1475) formas a me obser- 
vatas adnumerandas ad interim esse volo; hoc loco etiam eas describo, postero 
autem tempore diagnosim specialem atque iconem dabo. 
