122 W. B. TUKNER, FRESH-WATEU ALGyE OF EAST INDIA. 



Long. 24, lat. 30 (c. proc), lat. isth. 7, long. proc. 7- — 8 [*. T. XVI, f. 27. 



76. S. Zelleri, n. sp. S. submediocre, fere tam longum quain latum, semicellulis a fronte 

 globosis, processubus 5 — G lateralibns horizontalibus laevibus rectis apice furcatis mu- 

 nitis, et a3que numero processuutn dorsaliuin consimilium vertiralibus, et supna infer- 

 riores dispositis, instructis; membrana glabra; sinu brevi, rotundato. A vertice visum 

 5 — 6-gonum, stellatum; angulis introrsnm rotnndatis; processubus snperioribns a infe- 

 rioribus subtentis. 



Long. 28— 30, lat, 29—83, lat. isth. 7—9, long. proc C— 7 ju. T. XVI, t'. 28. 

 I have given this specific name in yemembranee of Dr. G. Zeller, who, in 1878, 

 wrote upon Indian Fresb-water Alga?. 



77. S. Renardii Reinscii (Sp. Alg. fung. p. 127, t. XXIII A, 1". 1, 1866; Dulymidiiun 

 (Staurastrum) Renardii, Reinsch Alg. Frank. p. 168, t. VII, 1*. 9, 18(57; Stan. tvun- 

 catulum Reinscii Contrib., p. 91, t. IX, f. 3, 1875). 



Long. 25, lat. 22 (c. proc), lat. isth. 7, long. proc 3—4 fi. T. XVII, f. 3; a 

 is shewn slightly oblique. 



This seeius not uncommon in Bengal. Refering to the last synonym, the change 

 of name by its own autlior without apparent cause is hardly connnendable. Nord- 

 stedt (Alg. N. Z. p. 36, t. I\ T , f. 2) verv properly retains the old name. 



78. S. pseudofurci^eruin Heixscii (Alg. Frank. p. 1 (19, t. XI, 1. 2, 18<57 ; Sp. Alg. fung. 

 p. 128, t, XXIII, Cf, 1, 186(5; Wolle, Desm. U. S. A. p. 147, t. LII, f. 27, 28, 1884; 

 Cooke Br. Desm. p. 147, t. LXI, f. 4, 1887 ; S.tau. furcatuni c pseudofiircigwum, Rabh. 

 Fl. Eur. Alg. III, p. 218, 18(58; non Lundell (Desm. Suee. p. 71, nec Cooke J. Q, 

 Club, p. 208, t. 14, f. 1—3, 1880). Forma. 



Lat. 36, proc apic. longit, 6 ju. T. XVII. f. 5. 



I overlooked this form when making my sketch No. (5(57, so onlv drew it in 

 vert. view, but think I am correct in thus referring it, The s])ecies of Ehhh. St. 

 eustephanum has frequently been mistaken for this species, though IJeinscii (in mem. 

 cit. pp. 169 and 128) says distinctly »membrana glabra>. The principal processes, at 

 the angles, are shorter than in furcatum and senarium, 



79. 8. sältans, Joshua Burm. Desm. p. 641, t, 23, f. 21, 1886). 



Long. 43—47, lat. (55—80, lat. isth. 10 — 12, long. proc. 17-24 u. T. XIV, i. 

 8, (b corpore in eapsulå incluso). 



At b a curious state is depicted (after Wallicu Mser. No. 2.6.1, f. 4); Dr. W. 

 says, »The arms appeared protruding from a distinct membi-anous elliplical cell — the 

 upper spines being . . . reflected upwards, so as to nieet each other at the inner side 

 of the top of the cell , . ., t hese spines are not completelv developed». The form is 

 2-angled, and near to S. grallatorium fi forcipigermn Lagekh. (Amoi-. Desmfl. p. 249, 

 t, 27, f. 27), and to the type-form X grallatorium Nokdnt., q. v. No. 83. 



80. S. galeatum, n. s|>. S. medioci-e; 1 1 / 2 — l 3 ,-|>lo latins quam longum; semicellnlaM-ii- 

 neatae, dorso clevato-rotundata' spinnlis singnlis qrassis capitato-acntis boriaontalibus 

 utroque latere ornato (spinnlis rionnullis aliter cuneato-acutis), ut -galeam» ferentes; 

 ventre panllo inflatse; angulis 3, longe prodnctis, processubus convei-gentibus, margine 

 serrato-dentatis apice ina^qualiter furcatis, quoque angulo ad mai-ginem superiorem hasis 



