210 CYSTIPHORE. 
golden brown, the outer permanent, yellowish or becoming pale ; 
cell-contents verdigris green, granulose. 
Size. Cells 006-009 mm. with envelope. Families 
‘015-075 mm. 
Rabh. Alg. Eur. ii, 47. Kirch. Alg. Schles. p. 260. 
On rocks. 
Plate LXXXIP. fig. 5. Cells and families magnified 400 diam, 
Genus 88. APHANOCAPSA, Wig. (1849.) 
Cells spherical, with a thick, soft, colourless tegument, con- 
fluent in a homogenous mucous stratum. Cell division as in 
Glewocapsa.—Rabh, Alg. Eur. u1., 48. 
Aphanocapsa virescens. (Hass.) Rabh. Alg. Eur. 11, 248. 
Thallus gelatinous, more or less expanded, dirty green, or 
olive, becoming brownish, cells of medium size, pale bluish- 
green, solitary or in pairs, tegument scarcely visible. Cell 
contents homogenous, sometimes with a central vacuole. 
Sizz. Cells about 0055 mm. diam. 
Sorosporium virescens, Hass. Alg. 310, t. 78, f. 8 a. 
Aphanocapsa parietina, Nag. Hinz. Alg. t. 10, f. 1. 
On stones, rocks, &c. 
Plate DXXXVI. fig.1. Cells magnified 400 diam. 
Aphanocapsa rivularis. (Carm.) Rabh. Alg. Eur, 11., 49. 
Thallus hemispherical, gelatinous, tuberculose, often confluent, 
sruginous-green, becoming brownish when dry ; cells spherical, 
scattered, single or in pairs, tegument very thick, not lamellose, 
colourless, soon diffluent. Cell-contents bluish-green, delicately 
granular. 
Sizz. Cells about :005-:006 mm. diam. 
Palmella rivularis, Carm. MSS. Harv. in Hook. Eng. Fi. 
v., p. 897. Harv. Man. 177. 
Coccochloris rivularis, Hass. Alg. 317, t. 78, f. 6a, b. 
On rocks and stones inundated, in mountain streams. 
«Fronds one-fourth or half an inch in diameter, hemispherical, tuber- 
cular, firmly adhering, sometimes cohering into a broad crust. Colour 
vivid green.”—Carmichael. 
Plate LXXXVI. fig. 2. Cells of A, rivuluris, X *400. 
Aphanocapsa Grevillei. (Hass.) Rabh. Alg. Eur. 11., 50. 
Thallus gelatinous, globose, densely aggregated, more or less 
confluent, dirty green, from olive to brownish when dry ; cells 
