108 CLASS II.— ORDER I. 



nished, as well as the branches, with small, scattered, 

 and rather numerous filaments ; colour orange. 

 Mediterranean. 



FARINACEOUS. 



5. LiAGORA farinom. Stem very branching, ap- 

 pearing as if thorny; branches dispersed; smaller 

 branches long and filiform, sometimes dichotomous, 

 and covered with a whitish powder which gives this 

 Polypidom a farinaceous aspect ; colour, a deep 

 olive green ; height, from one to two decimetres. 



Red sea. 



WHITE. 



6. LiAGORA albicans. Stem branching; branches 

 dispersed ; colour, a uniform greyish white ; height 

 fifteen centimetres. Plate 7. fig. 7. 



East Indies. 



EXPANDED. 



7. LiAGORA distenta. Stem cylindrical, filiform, 

 and very branching ; principal and smaller branches 

 spread out, and forked at the summit. 



Bay of Cadiz. 



NEOMERIS. 



Simple Polypidom, incrusted ; incrustation cellular 

 in the upper part, embossed in the middle, and scaly 

 in the lower part. 



