REVISED LIST OF MARINE ALG.E. 107 



of bead-like cells. From several ofthese filaments there arise 

 the female organs, each consisting of a carpogenous cell, 

 a unicellular trichophore and a long delicate trichogyne 

 which passes outwards and appears on the surface of the 

 ramulus as a short hair. After fertilization the carpogenous 

 cell produces a mulberry-like mass of carpospores which 

 gradually increase in size and deepen in colour. Pollinoids 

 may be seen in the act of fusing with the apex of the 

 trichogyne. The carpogenous cells nearest the placental 

 cell most frequently develop carpospores, though rudimen- 

 tary cystocarps are common nearer the periphery. The 

 conclusion come to by Schmitz* is that Catenetta belongs 

 to the Cystoclonium group of the Rhodophyceae, although 

 the great number of carpogenic systems, it seems to me, 

 does not point to a very close relationship with that genus. 

 I have represented some of the more important features 

 on Plate II. (see explanation of Plates). 



Tribe II. — Bhodophyllideae. 

 Rhodophyllis bifida, Kiitz. 



Puffin I.!, I. of Man. 



Cohort IV.— EHODYMENIN.E. 

 Order I. — Speleroccace^. 

 Tribe I. — Sphserocceas. 

 Sphcetococcus coronopifolius, Grev. 

 I. of Man. 



Tribe II. — Gracilariea?. 

 Graci/aria confervoides , Grev. 



I. of Man, Coast of Wales, Hilbre I. ! 

 Calliblepharis ciliata, Kiitz. 



I. of Man, Anglesea !, Puffin I. !, Hilbre I. ! 

 G. jubata, Kiitz. 



I. of Man. 



*System. fiber d. Florideen, Flora, 1889, 



