F. Børgesen : Rhodophyceæ of the Danish W. Indies. 



61 



thin, nearly colourless cells. The whole length of the branchlet 

 is about 80— 100 /y. The hair-hke prolongations have a length of 

 about 50 fx and are about 1—2 fi thick in the summit. 



Upon the lowest cells of these branchlets we find a single or 

 mostly two or three serially disposed sporangia (Figs. 63, 64). 

 The lowermost sporangia are often pedicellate, the others sessile. 

 Rarely sporangia are found terminally upon short two- or three- 

 celled branchlets. 



The sporangia are ovate-oblong, 8 — 10 fi long and 5— 6/i 



broad. 



This species was gathered in a sheltered locality behind Long Reef at 

 Lt. Princess, St. Croix. 



Subfam. 2. Nemalieæ. 



Nemalion Targioni Tozzetti. 



1. Nemalion Schramm! (Grn.) Borgs, 



Borgesen, F., Some new or little known West Indian Florideæ, I 

 (Botanisk Tidsskrift, vol. 30, 1909, p. 4, pi. 1). 



Helininthocladia Schvammi Crn. (nomen nudum) in Maze et Schramm, 

 Algues de la Guadeloupe, 2e Edit., Basse-Terre 1870-7, p. 177. 



On the south side of St. Croix I have found some few but 

 large and well developed specimens of a Nemalion which I in 

 my above mentioned paper have referred to Helminthocladia 

 Schrammt Crn. 



For details I refer to the above mentioned paper and shall 

 here only give a description of the plant. 



The specimens when living had a very gelatinous surface 

 so that they slipped out of one's hand like an eel; on the other 

 hand the consistency was rather tough. The colour was a dark 

 redbrown. The thicker main branches which reach a thickness 

 of about l^/g cm were somewhat compressed, the thinner nearly 

 terete. The surface was smooth in places, being somewhat curled 

 or crisp especially in the thicker branches. 



On drying they adhere strongly to the paper and gradually 

 take on a dirty, yellow-brown colour. 



The plant was fastened to stones and shells on the bottom 

 by means of a small roundish disc at the base. 



The specimens are irregularly ramified on all sides, often too 

 with numerous proliferations at the apices (cfr. 1. c. plate 1). 



