22 



MEMOIRS OF THE NEW YOEK BOTANICAL GARDEN 



Anacystis microsphaeria sp. nov. 



Plate 4, figure 39 



Colonies spherical to slightly irregular in outline, some speci- 

 mens being cubical with rounded corners, free, 20-35 m diam. ; 

 cells spherical to decidedly angular after division, or remaining 

 angular to maturity, 3-3.5 n diam., pale aeruginous, closely ag- 

 gregated; resting spores angular, fitting close together in the 

 colony, with a tliin, firm, membranaceous, smooth, brown wall, 

 5.8 |j diam. ; tegument firm on the margin, more or less lainellose, 

 yellowish to dark brown. 



Growing among other Myxophyceae on a wall at Coamo 

 Si^rings, no. 299 a, type. 



The above is a small species distinguished by its relatively 

 large, brown, smooth-walled resting spores combined with its 

 tough, close-fitting, lamellose, colonial tegument. 



Anacystis amplivesiculata sp. nov. 



Plate 4, figure 40 



Colonies 50-80 p (up to 150 m) diam., spherical to irregular 

 in form, free; cells spherical to irregular in outline, not closely 

 congested, 5.2-6 \x diam., bright aeruginous, homogeneous ; rest- 

 ing spores "with a distinct hyaline, finely papillate Avail, 8-9 m 

 diam. ; tegument opalescent, firm, smooth on the surface, homo- 

 geneous throughout the colony, 6-10 n thick outside of the cells. 



Growing on bark by the road to Monte Montoro, Maricao, no. 

 1087 a, type, and no. 1088 a ; on a church wall at Sabana Grande, 

 no. 962 c. 



Anacystis amplivesiculata is a very distinct and beautiful 

 species, with the spherical, bright bluish-green cells set in a 

 clear, opalescent matrix, and with resting spores surrounded by 

 a distinct, hyaline, papillate wall. Frequently the cells of an 

 entire colonj^ divide simultaneously just before spore formation 

 and the sjjore wall begins to form at the beginning of division. 



Anacystis gloeocapsoides sp. nov 



Plate 4, figure 41 



Colonies spherical, more or less associated into groups ad- 

 hering by their sticky walls or floating free, 15-30 n diam. ; cells 

 not densely crowded in the colony, each secreting a tegument dif- 



