1023 
Chlorophyceæ. 
Division I. ISOKONTÆ. 
Family 'V’olvocaceæ . 
g 3 . Chlamydomonas Debaryana Gorosch. — Anlioquia n° i 3 . 
Long. cell. 18-20 p.; 1 a t . cell. i 4 , 5 -i 6 y. 
94. Eudorina elegans Ehrenb. — Cundinamarca : n° i 4 . 
96. Volvox aureus Ehrenb. — Cundinamarca : n os 16 and 23 . 
Family Palmellaceæ. 
96. Palmodactylon varium Næg. — Cundinamarca : n° 24. 
97. Apiocystis Brauniana Næg. — Cundinamarca : n° il\. 
The colonies were very large, (lie pyriform gelalinous envelope attaining a length 
of 290 y; diam. cell. 8-12 y. 
98. Glœocystis gigas (Kütz.) Lagerii. — Anlioquia: n° 6. Cundinamarca: n os r 4 , 
19 and 23 . 
Family Protococcacæ. 
99. Protococcus fuscatus sp. nov. 
P. parvis et aquaticis, epiphyticis ad algas filamentosas majores; cellulis angulari- 
globosis, plerumque 2, 4, 8, 16, 32 vel 04 in familiis consociatis, ad membranam algœ 
filamentosœ arcte adhœrente ; chromatophora singula parielali, magna et lobala, sine 
pyrenoide ; membrana ce/lularum firma et fuscata. Multiplicatio cellularum vegetati- 
varum divisione in duas direcliones alternante. 
Diam. cell. 7-1 4 y; diam. fam. parv. (4 cell.) 16-22 y. (PI. XXI, fig. i 3 ). 
Cundinamarca : Atlached (o Œdogonium sp., Laguna de la Savane de Bogota, 
Eastern Andes; altit. 2680-2600 m., n° i 4 - Atlached to Œdogonium fabu/osum var. 
columbianum and Œ. taphrosporum , Laguna de Ubaque, Eastern Andes; altit. 2066 m. 
n° 23 . 
The epiphytic habit of Protococcus fuscatus is truly remarkable. In ail cases the 
host was a species of Œdogonium and the larger families of 32 or 64 cells formed a 
compact stratum of one layer in thickness. The attachment lo (lie wall of the Œdogo- 
nium is so firm that it must be due to some definite secreted substance. The most 
