no. 9 



ALGAE TAYLOR 



II 



meshes are more easily detached in relatively large pieces, and show 

 the dichotomous filamentous structure hetter (pi. I, jigs, 2, 3). The 

 latter type appears in text figure 13, and a transition zone between 

 small and larger meshes in figure 14. Occasionally in crowded areas 

 a three-dimensional sponge is formed, but this is restricted. As origi- 

 nally described, 71/. solmsiana Falkenberg (1901, p. 109) was intended 



Figs. 13, 14. — Fosliella fariiwsa var. chalicodictya, views of portions of 

 two nets, X 300. 



The net shown in fig. 13 is one with a rather small mesh. The small corticating 

 cells show at the ends of the cells making up the constituent filaments, and one 

 young hair-bearing cell appears in the upper right-hand quarter of the drawing. 

 The net shown in fig. 14 illustrates the transition between a coarser mesh above 

 and a smaller one below. 



to apply to a plant with irregular, lacunose growth of the filaments, 

 so that a continuous plate was not formed ; there is nothing about the 

 figures of Solms-Laubach (1881, p. 11, pi. 1, fig. ij) to indicate that 

 he had met a plant forming a regular net of the type observed in this 

 material from Old Providence Island. 



Fosliella farinosa var. solmsiana (Falkenberg), n. comb. 



On Valonia ventricosa, from shallow water, probably on reefs, Old 

 Providence Island, Colombia (Schmitt 32), August 6, 1938. 



