THE MARINE BOTANIST. 149 



algge between tide-marks. Southern shores of 

 England and Ireland. Jersey. Differs from the 

 foregoing in the shape of the articulations of the 

 principal branches, which are compressed, with their 

 upper angles sharp and prominent. The colour is u 

 pale red. 



MELOBESIA. 



Named from one of the sea-nymphs of Hesiod. 

 Frond attached or free, either flattened, orbicular, 

 pinnated or irregularly lobed, or cyhndrical and 

 branched (never articulated), coated with a calca- 

 reous deposit. Fructification, conical, sessile; 

 ceramidiay scattered over the surface of the frond. 



MESOGLOIA POLYMORPHA. 



Frond attached to rocks, stones, shells, (fee, be- 

 tween tide-marks; thick, stony, encrusting, or 

 rising into short clumsy branches, which are seldom 

 much divided, and often merely rudimentary. Pe- 

 rennial. Common. 



