1027 
tenuissima excepl for lheir slightly grealer diameter and lhe presence of only one pyre- 
noid in lhe chloroplast. The filaments were equal in diameter to ihose of many forms 
of U. zonata, but in olher respects were quite unlike (fiat species. 
130. Uronema confervicolum Lagerh. — Antioquia : n° 6 . 
'Family Microsporaceæ . 
1 3 1 . Microspora amœna (Kütz.) Rabenh. — Antioquia : n os i and 2 . Cundina- 
marca: n° 24. 
1 3 2 . Microspora pachyderma (Wille) Lagerh. — Cundinamarca : n° 18 
1 33 . Microspora tumidula Hazen. — Cundinamarca: n° 
Family Microthamniaceæ. 
1 34 • Microthamnion Kützingianum Næg. — Cundinamarca: n° 22 . 
Family Aphanochaetaceæ . 
1 35. Aphanochæte repens A. Br. — Cundinamarca : n° 14 . 
Family Coleochaetaceæ . 
1 36. Coleochæte scutata Bréb. — Cundinamarca : n° 23 ; abundant on varions aqualic 
macrophytes. Many of the specimens with spermocarps. 
r 3y. Coleochæte Nitellarum Jost. — Cundinamarca: n° 23; very abundant on 
Nitella sp., and mostly with spermocarps. 
1 38. Coleochæte pulvinata A. Br. — Cundinamarca: n° 23; abundant on varions 
aqualic macrophytes and also around lhe tips of the leaf-segments of Nitella sp. Many 
specimens with spermocarps. 
Division IL AKONTÆ 
Family Zygnemaceæ. 
i3g. Mougeotia sp. (stérile). Lat. cell. 26-28 y. ; diametro 5-6 plo longioribus. — 
Cundinamarca : n° 16. 
i4o. Mougeotia recurva (Hass.) De Toni. — Antioquia: n° 1. Lat. cell. veget. 
1 3- 1 4 \ J - ; diam. spor. 33 y.. 
1 4 1 Mougeotia (Gonatonema) Mayori sp. nov. 
M. (G.) cellulis vegelativis valde elongatis, diametro circiler 18-21-plo longioribus, 
chromatophora cum pyrenoidibus 1 r - 1 4 in sérié subirregulare ; aplanosporis oblique 
