270 RECORDS OF THE BOTANICAL SURVEY OF INDIA. 
DIATOMACEAE, 
Genus Diatoma D.C. 
Hab. On the wet Mountain of Tonglu at 9,500 ft. (24918) 5 in shady pool 
at Matiana at 8,500 ft. (28684). 
FRAGILLARIACEAE. 
Genus Fragillaria Lyngbya. 
~ 
> 
. F. capucina Desm. Van. Heurck Synops. +t. 45, £. 2. 
Var. mesolepta (Rabenh.) Van Heurck Synops. t. 45, f. 3. 
Hab. In the River Dihang, between Puak and its tributary the Side 
River (37689). : 
. F. Ungeriana Grun. in Schmitz Atlas ¢. 298, £. 1-8. 
Hab. In various streams near Kakarhatti (28842) ; in stream about to 
_ dry up, Asirgarh Hill (31090) ; in running stream near base of the 
rhill, Chandni (31099) ; in the Sipna stream (31268); in water under 
rocks, Sembadew, in the Sipna Valley (31345). 
The isolated frustules of this Diatom bear a strong resemblance to 
Synedra Ulna, but the striations are much coarser. Very abundant as ribbon- 
like colonies. 
_ 
-] 
Genus Synedra Ehrenb. 
17. S. Ulna (Nitzsch) Ehr. Inf. 1838, p. 211, t. 17, f.1; Rabenh. Flor. Eur, 
Alg. 1, 1864, p. 133, 
FHab. Alsundi in the State of Suket, 7,000 ft. (27047) ; damp rocks at 
fthe summit of the Dawna Hills at 3,000 ft. (30346) ; in the Sipna stream 
((31268) ; in the Dihang River, between Puak and its tributary the 
|Side River (37689). 
Var. longissima (W. Sm.) Van Heurck Synops. t. 38, f. 3. 
_ Hab. Near Nataran (27976) ; with the typical form (37869). 
18. 8. aeus (Kiitz.) Grun. in Abh. d. k. k. zool. botan. Gesellsch. Wien 
1862, p. 398, 
Hab. With the preceding species (31268, 37689). 
