290 RECORDS OF THE BOTANICAL SURVEY OF INDIA. 
Long. 70u ; lat. 50u ; lat. isthm. 42u. 
Hab. In shallow still water, Haflong (32700). 
151. €. quadratum Ralfs Brit. “ange 1848, p. 92, 6.15, £. 1a; W. & G.S. 
West Brit: Desm. 1908, p. 5 
Forma Willei W. & G. 8. “a Brit. Desm. 1908, p. 59. 
Hab. On the Mountain of Tonglu at 10,000 ft. (27737). 
152. €. Sinostegos Schaarschm. Magyar — 1882, p. 266, t.1, £.12; W. 
& G.S. West, Brit. Desm. 1908, p. 7 
Var. obtusius Gutw. W. & G. S. Wale. Baik, Desm. 1908, p. 79, t. 71, 
Hab. ‘With the preceding species (27737). 
153. ©. angulosum Bréb. 
Var. concinnum (Rab.) W. & G. 8. West, Brit. Desm. 1908, p. 94. 
Hab. Calcutta (28184). 
154. €. Portianum Arch. W. & G. S. West, Brit. Desm. 1908, p. 165. ’ 
Hab. In stream, Raxaul on the Nepal border (29361). 
155. ©. maculatum W. B. Turner, Alg. E. India 1893, p. 49, t. 7, £ 31, t. 8, 
f. 68; W. &. G.S. West, Alg. Ceylon, 1902, p. 163. © 
Hab. In pool at 8,500 ft. above Matiana (28064). 
156. ©. laticeps Grun. in Rabenh. Flor. Eur. Alg. 1868, P. 168 ; Nordst. Alg. 
New Zealand 1888, p. 57, t. 6, £. 10. 
Hab. On the Mountain of Tonglu at 10,000 ft. (27737). 
157. €. subauriculatum W. & G. 8. West, Alg. Mad. 1895, p. 55, t. 6, £ 31; 
Alg. Tangan, 1907, p. 115. 
Hab. In shallow still water Haflong (32700) ; in ditch at edge of rice — 
field near Sadiya (32683). 
This Desmid is now known to occur in Madagascar, Central Africa, Siam, — 
North-Eastern India, and Central China. 
158. €. distichum Nordst.-Freshw. Alg. N. Zealand. Coss p. 51, t. 5, £. 16; 
W. & G. S. West, Brit. Desm. 1908, p. 215 
Forma paullo minor, zygosporis magnis biorit mamillis numerosis — 
praeditis, mamillis aculeis parvis singulis instructis. 
PLM, figs. 5, 6. 
Long. 28 uw; lat. 25 »; lat. isthm. 6 uw; crass. 17 uw; diam. zyg. sine 
acul. 34u ; cum acul. 38 
Hab. In ditch at edge of ride field near Sadiya (32683). 
159. €. binum Nordst. in Wittr. & Nordst. Ale. exe. 1880, a 383, fasc. 21, 
1889, p. 39; W. & G. S. West, Brit. Desm. 1908, p. 
Hab. In ditch at edge of rice field near Sadiya abe in the River 
Dihang between Puak and its Tributary the Side River (37689). 
160.- C. speciosum Lund. Desm. Suec. 1871, p. 34, t.3, £5; W.&G.8. West, 
Brit. Desm. 1908, p, 247 
