164 NEMATOPHYCER. 
Size. Cells -015--023 mm., 24 to 4 times as long; oogonia 
043-05 x -055-072 mm.; oospore :04-"046 x ‘047-057 mm. ; 
androsp. cell -018-:02 x -016-'02 mm.; sperm. cell 008-01 x 
*01--011 mm. 
Wittr. Mon. Gidog. p. 27. Kirch. Alg. Schles. p. 56. 
Rabh. Alg. Eur. iii., 347. 
Vesiculifera ciliata, Hass. F. W. Alge 202, t. 52, f. 2. 
CGdogonium piliferum, Auers. Rab. Alg. Sachs. No. 474. 
Britain, Ireland. 
Plate LXTI. fig. 3. Cdogonium ciliatum, with oogonia and dwarf 
males; a, androsporangia; 6, small plant (after Pringsheim) ; ¢, andro- 
spore x 400. 
b. Membrane of oospore echinulate. Oospores globose. 
Gidogonium Cleveanum. Wittr. Disp. Edog. p. 129. 
Gynandrosporous. Oogonia single, subglobose, opening by a 
pore below the middle; oospores almost filling the oogonium, 
globose, spinulose, spines conical spirally disposed; andro- 
sporangia 4-6 celled, dwarf males a little curved, seated on the 
_ Supporting cell ; spermogonia unicellular, 
Size. Cells -018-026 mm., 3-7 times as long ; oogonia 
*052-:06 x ‘059-063 mm.; oospores :049--057 x -051--059 
mm.; spines ‘004 mm. long; androsp. cell :018--022- x 009- 
018 mm.; sperm. cell -008--0085 x -014--016 mm. 
Wittr. Mon. Gidog. p. 28. Kirch Alg. Schles. p. 56. 
Gdogonium echinospermum, Pringsh. Beitr. 70, t. 5, f. 7. 
Rabh. Alg. Eur. iii., 849, in part. 
Treland. 
Plate DXII. fig. 1. Cdogonium Cleveanum with oogonia, and 
echinulate oospores ; a, androsporangia x 400. 
Gidogonium echinospermum. Br. in Kutz. Sp. Alg. 366. 
Gynandrosporous, or idiandrosporous. Oogonia single, 
ellipsoid-globose, or nearly globose, opening by a pore at the 
middle; oospore almost filling the oogonia, globose, echinulate ; 
spines awl-shaped ; androsporangia 2-5 celled, dwarf males a 
little curved, seated on the supporting cells; spermogonia 
unicellular. 
Size. Cells :018-03 mm., 21-43 times as long; oogonia 
°04--05 x 042-057 mm.; oospore 038-047 x -038--049 mm. ; 
spines 003 mm. long; androsp. cell -021--025 x -009-:015 
mm. ; sperm. cell -01--012 x 012-015 mm. 
Archer in Quart. Journ. Micr. Sci. 1866, p. 69, 1867, pp. 
80. Kutz. Tab. Phye. it., t. 36, f.2. DBary Cidog. t. 8, f. 
13-22. Wittr. Mon, Gidog. p. 29. Kirch. Alg. Schles. p. 56. 
Rabh. Alg. Eur. iii., 349. 
