. FRESHWATER ALGAE FROM INDIA. 285 
147.-P: tessellatum (Josh.) Lagerh. Kritische Bemerk. 1887, p. 541 (Doei- 
dium tessellatum Josh. Burm. Desm. 1889, Pp. 650). 
Long. 400 p.; lat. 40 pw; lat. apic. 25 p. 
Hab. With the preceding species (32683). 
: The question has been raised whether P. tessellatum (Josh.) Lagerh. is 
i a with P. trochiscum W. & G. S. West (some N. Amer. Desm. 1896, 
cis ze _~ a 1907, p. 195). In view of the fact that the present speci- 
ET y similar to the Alga described by Joshua, this seems very 
oe . —_— from Sadiya had no basal ‘nflation at all, and, as in 
‘GY igure, the semicells were gradually attenuated 
a. cristatum (Turn.) Borge, Trop. u. subtrop. Siissw. 
oo cristatum Turn. Freshw. Alg- E. India 1893, p. 32, *- 4, 
Eeoras orientalis (Turn.) W. & G. 8. West. Alg. Burma 1907, Pp. 195, 
~ ee orientale Tum. Freshw. Alg. India 1898, p. 31, t- 4, £1. 
“ ab. With the preceding species. (32683). 
. P. maculatum (Turn.) mihi. (Docidium macu 
E. India 1893, p. 31, +. 4, £ 
Zygosporis magnis globosis, 
mento globoso gelatinoso crasso 
latwm Turn. Freshw. Alg. 
sa Pl. 1, fig. 25- 
diametro 150 p, membrana laevi, tegu- 
3 involuta vestitis ; diam. teg. 320- 
Ue. 
Long. ca 620 p.; lat. bas. 60 p; lat. apic. 53 pw; diam. zyg. 150 re 
cum teg gel. ca 360 wu. 
The specimens agreed very well with 
punctae of the cell-wall were more distant. 
a uw apart, but according to his figure, 
: ie present specimens agreed with his figure hi 
respect. The cells are also found adhering togethe filam 
3 or 4 individuals long. Zygospores were not infrequent in No. 32683, The 
conjugating cells often had one very young semic 
Hab. In ditches of still water, neat Sadiya 
of rice field (32683). 
120. P. firmum W. & G. S. West, Alg. Mad: 1895, 
Var. cylindrieum Var. nov. 
Var. cellulis gracilioribus, diametro circiter 9- 
brana punctis distantioribus praedi 
ita. 
Long. 550-780p ; lat. 50-61p ; lat. ad apic. 38-40p. 
i ies (32683, 32658) ; in washings of Lemna 
er are 
they are at least 4-5 p distant. 
ell. 
(32658) ; in ditch at edge 
p. 45, t. 5, £ 41. 
13-plo longioribus, mem 
and Wolfia from R. Kundil near Sadiya (32672). 
Genus Euastrum Ehrenb. 
121. E. ansatum Ralfs Brit. Desm. 1848, P- 85, t. 14, £2. 
Hab. In ditch at edge of rice field neat Sadiya (32683). 
