(I.e., p. 613) writes: "This carpogonic branch is composed usually 

 of three cells; since, however, the number varies from two, in the 

 simplest noted . to as many as five, it cannot be considered as in 

 any way significant". A well developed nucleus was found in 

 each of the cells of the carpogonic branch (Fig. 3 J5); on the other 

 hand the chromatophore was not very conspicuous even if it was 

 not quite absent as Janczewski describes it. The cells of the 

 carpogonic branch are roundish-subquadrangular and usually a 

 little shorter and thicker than the vegetative cells in the lowest 

 part of the cell-thread. By means of this they are also most often 

 easily to be recognized though I must confess that it may sometimes 

 be difficult to decide where the carpogonic branch begins and the 

 vegetative cells end, as Wolfe has also pointed out in this way 

 concerning the carpogonic branch of Nemalion muUifidum (1. c. 

 p. 613): "The lowest cell of the series partakes to some extent 

 of the characters of both , and thus lessens the abruptness of the 

 transition between the two types". 



The carpogonium bears a rather short and often somewhat 

 bent trichogyne which is swollen towards its apex. In spite of 

 much search I have not succeeded in finding antheridia ; a few 

 times some decayed fragments of what perhaps might be remains 

 of antheridia were found at the tips of the filaments but it seems to 

 me very doubtful what they really were. Most probably the specimens 

 are dioecious in accordance with what Rosenvinge (1. c. p. 146) 

 has stated to be commonly the case with Nemalion muUifidum in 

 the Danish waters. Also I have never seen spermatia in contact 

 with the trichogyne. 



All the material at hand was found in this stage of development. 

 Only in the youngest tips of the plant no carpogonic branches 

 were yet developed. After much search and by taking samples 

 in different parts of the dried material I have however found a 

 few cystocarps of which fig. 3 D illustrates one. If these are nor- 

 mally constructed the sporogenous filaments seem to be more 

 loosely connected than those in Nemalion muUifidum. The carpo- 

 spores are about 11^ broad. 



This species was found in shallow water fixed to stones and 

 shells near the shore. The locality was rather sheltered ; but never- 

 theless small waves occur by which the plant was moved to and fro. 



Only collected once in the month of February on the south 

 coast of St. Croix: at Long Point. 



