= 
_ the cellsis relatively narrower, and is of rather different form. 
992 RECORDS OF THE BOTANICAL SURVEY OF INDIA. 
'. Long. sine acul. 36u ; eum. acul. Bau ; ; lat. sine acul. 384 ; cum acul. 
48y ; lat. isthm. 9u ; crass. 18u. 4 
Hab. With the preceding species (32683). q 
This variety differs from the typical form in its simple and longer spines, 
which are’surmounted on the distinctly prolonged angles. In the end view 
It should be compared with X. calearato-aculeatum Hier. _(Schmidle in 
and X. antilopaewm (Bréb.)*Kiitz., var. incertum Schmidle (ibid. xxxii, p. 71,4 
t. 2, £. 5), from which it differs in its simpler spines with the prolonged hollow 
bases. 4 
170. X. hastiferum Turn. New Rare Desm. 1885, p. 938, t. 15, f. 20. (X. 
antilopaeum Kiitz. var. angulatwm Josh. in Journ. Linn. Soc. Bot. 
1886, p. 643, t. 24, £. 16.) 
Var. javanicum Turn. Freshw. Alg. E. India 1893, p. 100 (X. antilo~ 
paeum f. javanica Nordst. De Alg. et Char. 1880). 
Long. sine sp. 394; cum sp. 60-70u; lat. sine sp. 392 ; cum sp. neue 
lat. isthm. 9p; erass. 17p. 
Hab. With the preceding species (32683). 
171. X. Raciborskii Gutw. Alg. Java 1902, p. 589, +. 37, f 28. Pl. 1, 
figs. 12-14. 
Long. 50u ; lat. 48 ; lat. isthm, 22y ; crass. 29u. 
Hab. Shallow still water, Haflong (32700). 
The specimens were somewhat varinele, sometimes almost passing into 
forma protracta Gutw. loc. cit. t. 38, £, 29. 
172. X,lepidam W. & G. S. West, Alg. Ceylon 1902, p. 159, t. 20, f. 22, 23. 
Long. 39 ; lat. 27y ; lat. isthm. 8p ; earss. 19u. 
Hab. In ditch at edge of rice field near Sadiya (32683). 
Genus Arthrodesmus Ehrenb. 
173. A. convergens Ehr. Inf. 1858, p. 152, t. 10, f. 18; W. &G.S. West, | 
Brit. Desm. A911, p. 106 ; 
Cum zygosporis. 
Hab. In ditch - edge of rice field near Sadiya (32683). 
174. A. eurvatus Turn. Freshw. Alg. E. India, 1893, p. 135, t. 11, f. 31 
33, t. 12, £2, 7713, 15. 
Long. 43. ; lat. sine sp. 45y ; cum Bp. 85y. ; mt. isthm. 14u. 
Hab. With the preceding species (32683). 
175. A. fusiformis W. & G. 8. West, Alg. Burma 1907, : ct +. 15, £4: 
Hab. In ditch at edge of rice field near Eee (32683, 
