356 Howe: ALGAE OF BERMUDA AND THE BAHAMAS 
0.1-0.8 mm. thick, up to 5 mm, thick by overlapping (or falsely 
through corrugations), bullate, rugose, lacunose, or vesiculose, 
commonly sispees hollow and bistratose, sometimes explanate 
or concave and more or less saucer-shaped, often with irregular 
ascending nae or superficial lobes; colonies, in vegetative 
condition, mostly 25-80 u. in diameter, more or less polyhedral 
and forming a coherent pseudoparenchymatous thallus 2-10 
colonies thick, or at the ae subglobose or ellipsoidal 
and rarely becoming ace se common wall 12-40 w thick, 
cartilaginous, homogeneo veryo acatrery and finely lamellate, 
the cells 2-64, bright hie ari to yellowish green, mostly ovoid 
or elitpeoid; 3-8 u long, 3-5 wu broad, irregularly disposed or 
somewhat cubic Re or quetrengtlar: -prismatic in arrangement, 
somewhat closely aggregated in a central space 20-40 uv in long 
diameter, the walls of subsidiary colonies and of the individual 
cells rather obscurely defined; colonies, in reproductive condi- 
tion, subglobose, ovoid, or quadrangular-ellipsoid, 0.5—1.8 mm 
in diameter, including numerous daughter-colonies of 64, 128, 
or quadrangular-prismatic fashion, but sometimes irregularly 
disposed, the mother colony becoming more or less hollow and 
thus giving rise a similar condition in the succeeding pseudo- 
parenchymatous small-colonied vegetative state. 
Moss Hill Ponds, Long Cay, Bahamas, Dec. 15, 1905, L 
J. K. Brace 4235,—apparently forming a crust on the margin of 
a brackish or salt-water pond. 
Chindrocystis Bracei has points of contact with the genus 
Placoma, and in the often cubical arrangement of its cells in 
the ‘‘reproductive’’ stage or stage of most active division, it 
is suggestive of the genus Eucapsis of Clements and Schantz, 
described* from fresh-water plankton of Colorado. From 
Placoma vesiculesa Schousb., the type species of the genus 
Placoma, the plant apparently differs in the solidly coherent 
pseudoparenchymatous thallus formed by the colonies in their 
ordinary vegetative condition, in the absence of any radial, 
filamentous, or Entophysaloid arrangement of the colonies, and 
perhaps in the more excentric, unilateral or irregular develop- 
ment of the gelatinous or cartilaginous sheaths. In these 
characters it seems to resemble Chondrocystis Schauinslandii,{ 
the mid-Pacific Ocean type of Lemmermann’s genus, Chon- 
drocystis, from which species it evidently differs in its foliaceous 
* Minnesota Bot. Stud. 4: 134. ei 20. 1909. 
j Abh. Nat. Ver. Bremen 16: 353. 1900. 
