210 CYSTIPHOR^E. 



golden brown, the outer permanent, yellowish or becoming pale ; 

 cell-contents verdigris green, granulose. 



SIZE. Cells '006-'C09 mm. with envelope. Families 

 015--075 mm. 



Kabh. Alg. Eur. ii., 47. Kirch. Alg. Schles. p. 260. 



On rocks. 

 Plate LXXXIV. fig. 5. Cells and families magnified 400 diam. 



GENUS 83. APHANOCAPSA, Nag. (1849.) 



Cells spherical, with a thick, soft, colourless tegument, con- 

 fluent in a homogenous mucous stratum. Cell division as in 

 Gleceocapsa. RaWi. Alg. Eur. n., 48. 



Aphanocapsa virescens. (Hass.} Rdbli. Alg. Eur. n., 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. 



SIZE. Cells about -0055 mm. diam. 



Sorosporium virescens, Hass. Alg. 310, t. 78, f. 8 a. 



Aphanocapsa parietina, Nag. Einz. Alg. t. Ib, f. 1. 



On stones, rocks, &c. 



Plate LXXXVI. Jig. 1. Cells magnified 400 diam. 



Aphanocapsa rivularis. (Carm.~) Rabli. Alg. Eur. n., 49. 



Thallus hemispherical, gelatinous, tuberculose, often confluent, 

 asruginous-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. 



SIZE. Cells about '005--006 mm. diam. 



Palmella rivularis, Carm. MSS. Harv. in Hook. Eng. Fl. 

 v., p. 397. Harv. Man. 177. 



Coccochloris rivularis, Hass. Alg. 317, t. 78, f. 6 a, 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 LXXXFL fig. 2. Cells of A. rivularis, X '400. 



Aphanocapsa Grevillei. (Hass.) RabJi. Alg. Eur. n., 50. 



Thallus gelatinous, globose, densely aggregated, more or less 

 confluent, dirty green, from olive to brownish when dry ; cells 



