176 NEMATOPHYCES. 
Wittr. Mon, Cidog. p. 48. Kirch. Alg. Schles. p. 61. 
Rabh. Alg. Eur. iii., p. 357. Quart. Journ. Mier. Sci., 1866, 
p. 276, 
Britain, Ireland. 
Plate LXVIII. fig. 4. Bulbochete gigantea, with oogonium and 
dwarf male x 400. 
Szction 2. Oogonia ellipsoid or subellipsoid. 
Sus-Secrion 1. Species monecious. 
Bulbochete mirabilis, Wittr. Disp. @dog. 187, t. 1, f. 8, 9. 
Oogonia ellipsoid, or rather oblong-ellipsoid, patent, or rarely 
erect, seated beneath terminal sete or vegetative cells ; spermo- 
gonia 2-4 celled, erect (rarely patent), subepigynous, or 
scattered. 
Size. Cells :016--02 mm. 1}-13 times as long ; oogonia 
027-035 x-046--056 mm. ; sperm. cell -01--012 x -007--009 
mm. 
Wittr. Mon. Cidog. p. 50. 
Britain, Ireland. 
Plate LXVITI. fig. 2. Bulbochete mirabilis, with oogonia and 
androsporangia x 400. 
Sus-Srection 2. Species diccious. 
Bulbochete pygmea. Wittr. Disp. Edog. p.141. 
Oogonia ellipsoid, patent, seated beneath terminal seta, or 
vegetative cells, in longitudinal sectidén rather quadrangular ; 
androsporangia scattered, dwarf males seated about the oogonia. 
(Filament at first short, and curved.) 
Size. Cells :012-:015 mm. x a third part shorter or equal; 
oogonia °023-°025 x ‘034-04 mm.; stem of dwarf males 
011-012 x -:015--018 mm.; sperm cell ‘007-0075 x 
°007--0075 mm. 
Wittr. Mon. Gidog. p. 52: Quart. Journ. Micr. Sci. 1870, 
. 89. 
s Bulbocheete pygmea, (3. minor, Prings. Beitr. p. 74, t. 6, f. 
10. 
Treland, Britain. 
Plate LXVIII. fig. 5. Plant of Bulbochete pygmea, with oogoniam 
and (a) section of oospore x 400. 
Bulbochete insignis. Prings. Beitr. 72, t. 6, f. 7. 
Oogonia ellipsoid, patent or erect, seated beneath andro- 
sporangia or terminal set ; epispore delicately transversely 
striate ; androsporangia epigynous, or rarely scattered; dwarf 
males seated about or upon the oogonia. 
