CHROOCOCCACEJI. 207 



(rarely 6-8) in families, tegument narrow, lamellose, achromatic, 

 rounded or oblong ; cell-contents verdigris green, homogenous, 

 or delicately granulated. 



SIZE. Cells -0032--0045 mm. ; with envelope -007--011 mm. 

 Families -011--022 mm. 



Rabh. Alg. Eur. ii., 37. Kirch. Alg. Schles. 257. 



Coccochloris quaternata, Breb. MSS. 



On rocks or moist ground (Scotland). 

 Plate LXXXIII. fig. 8. Cells magnified 400 diam. 



Gleeocapsa arenaria. (Hass.) EaWi. Alg. Eur. I., 39. 



Thallus mucous, coherent, somewhat olive-coloured ; cells 

 large sphserical, tegument thick oblong or almost sphaerical, 

 colourless, lamellose ; lamellae diffluent, cell-contents verdigris 

 green then brownish, distinctly granulated. 



SIZE. Cells -0033--005 mm., with envelope '006--014 mm. 

 Families '04 mm. 



Rabh. Alg. Eur. ii., 39. 



Hcematococcus arenarius, Hass. Alg. 330, t. 76, f. 10. 



In springs and thermal waters. 

 Plate LXXXIV. fig. 1. Cells magnified 400 diam. 



Glaeocapsa aeruginosa. (Carm.) Kutz. Tab. I., t. 21, /. 2. 



Thallus crustaceous, grumous, or cartilaginous, glaucous 

 green ; cells small sphserical, tegument thick colourless, indis- 

 tinctly lamellose, externally not rarely angular, cell-contents 

 verdigris green, homogenous. 



SIZE. Cells -0022--003 mm. with envelope '0044--0088 mm. 

 Families -016-'05 mm. 



Rabh. Alg Eur. ii., 39. Kirch. Alg. Schles. 258. 



Palmella ceruginosa, Carm. MSS. 



Hcematococcus centgi?iosus, Hass. Alg. 333, t. 82, f. 3. 



On limestone and other rocks. 

 Plate LXXXIV. fig. 2. Cells and families magnified 400 diam. 



Glaeocapsa magma. {Breb.) Kutz. Tab. I., t. 22, f. 1. 



Thallus grumous, rather crustaceous, purple brown, blackish 

 when dry ; cells for the most part spha?rical, tegument lamel- 

 lose intense purple or coppery- brown, usually not pellucid, 

 external stratum very broad, globose, paler or colourless, soon 

 diffluent ; cell-contents verdigris green, granulose, often becom- 

 ing brownish. 



SIZE. Cells -0045--007 mm., with envelope -006--012 mm. 



2 o 



