Cundinamarca : n° 23 . 
Tliis characterislic Œdogonium was mixed vvilh lhe preceding specics. The végé- 
tative cells are rather long and lhecell-walls are very thick and strong. The apical cell is 
bluntly rounded; the basal cell is elongate, slighlly tumid, and wilh a strongly developed 
dise of attachaient. 
Knovvn previonsly only from Brazil. 
3 o 4 - Bulbochæte intermedia Ds Bary forma americana Hirn. — Cundinamarca : n° 23 . 
Other stérile spec’es of Œdogonium vvere noticed from Antioquia : n os 5 , 6, 7 and 8 ; 
Cundinamarca: nos r 5 , 16, r8, 19, 22 and 24. 
Division IV. HETEROKONTÆ 
Tamily Bohyococcaceæ. 
3 o 5 . Botryococcus Braunii Iyütz. — Cundinamarca: n os i 4 and 23 . 
Tamily Ophiocytiaceæ . 
3 0 6 . Ophiocytium parvulum (Perty) A. Br. — Cundinamarca : n os i 4 , 18 and 23 . 
307. Ophiocytium majus Næg. — Antioquia: n° 6 . Cundinamarca: n os 16, 17 
and 19. 
3 0 8 . Ophiocytium graciliceps A. Br. — Cundinamarca : no 18. 
Long. cell. usque 35 o y; long. slip. 8-1 1 p.. 
Tliis Alga occurred in great quanlily. The stalk of attachaient was rather shorter 
than usual, but possessed a well-marked basal dise. 
309. Centritractus belanophorus (Schmidle) Lemm. — Cundinamarca : n° 23 . 
Long. cell. sine spin. i(i, 5 -i 8 y., cum spin. 72-76 a ; lat. cell. 9 y.. 
Tamily Tribonemaceæ 
310. Tribonema bombyeina (Ag.) Derb. and Sol. forma minor (Wille) G. S. West. 
— Antioquia : n° 8. Cundinamarca : no 22. 
3 1 1 . Tribonema affine (Kütz. ) G. S. West. — Cundinamarca : n os i 4 and 22. 
I 32 
