MARINE ALG, 
: CYANOPHYCEZ, 
COCCOGONEA, Thur. CHROOCOCCACEX, Rab, 
MERISMOPEDIA, Meyen. 
M. revolutiva, E. Aske. (n. sp.) Prof. Askenasy first describes 
this new species in Latin as follows :—“ Differt a Merismopedia 
_ tonvoluta, Bréb, cellulis minoribus, diametro 3-4 », tegumentis 
gelatinosis. Particule sepe gelatina communi, in thallum _com- 
positum juncte.” (Differs from Merismopedia convoluta, Bréb., in the 
pe. 
re then says :—‘This Merismopedia occurs in the collected 
material in the form of larger and smaller pieces. The larger attain a 
2 ic 
bodies, turned up at the margin on both sides anadromously. Some- 
times algo they are turned up singly in the shape of a paper cornet. 
p never comprises more than turn acco 
with the breaking up of the pieces into smaller fragments which 
*ontinuously ensues as growth advances, T appens because at 
Pansion, but in a different direction. At these places the portions 
i : i direction, 
S the hei frequent repetitions of the same process are then originated 
ef 
‘ lel rows in two directi i th 
; irections perpendicular to each other. — 
4 of the revolution ig dotigtnres t siadler to one of the directions of the 
The cell-walls 
the 
ri the shape of a wedge, the last ones the more s0 acco: 
. prrature of the expansion is greater. 
