4 



MEMOIKS OF THE XEW YORK BOTANICAL GARDEN 



Growing in a pool about four kilometers north of Mayagiiez, 

 no. 1310 a, type. 



This species of Merismopedia is to be distinguished from 

 others by the combination of relatively large colonies containing 

 relatively large cells. 



Aphanocapsa intertexta sp. nov. 



Plate 1, figure 7 



Cells spherical, 2.4-2.6 \x diam., forming spherical colonies 

 when young, more or less irregular in form and later coalescing 

 to a considerable extent, not forming a definite stratum alone; 

 X)ale aeruginous ; entangled within the meshes of other small fila- 

 mentous jNh'xophyceae or forming a thin stratum on large fila- 

 mentous M^'xophyceae. 



Growing in association with several other sj)ecies of Myxo- 

 phyceae, especially filamentous forms, on rocks in Arroyo de los 

 Corchos, no. 1718, type; on the filaments of Stigonema scytone- 

 matoides on red-colored earth by a road north of Maricao, no. 

 1250 a; west of Hmnacao, no. 573 h. 



Aphanocapsa Richteriana major var. nov. 

 Plate 1, figure 9 



Cells 3.6-4.5 p diam., aggregated into very irregular, but defi- 

 nite colonies 2-3 mm. diam., elongating previous to division, 

 pale aeruginous to greenish gray ; tegument firm, honey-colored, 

 more nearly hyaline on the interior, the tegument persisting on 

 the surface of the colony around single cells or groups of 2-A, 

 but not showing on the interior of the colony. 



Growing on soil in the jDrimeval forest by Hacienda Catalina, 

 Palmer, no. 754 a, type. 



On the surface of the colonies of this species of Aphanocapsa 

 the teguments persist and are plainly visible through two to 

 three generations of cells before merging into the community 

 tegument. That part of the colony resembles the genus Gloeo- 

 thece, but on the interior of the colony there is no trace of the 

 individual tegument. 



The cells are rarely, if ever, two times as long as broad, but 

 are longer on the surface of the colony than in its interior, where 

 they are sphericaL 



