Sij)/ionea.'] bryopsis. 309 



and lovely mollusk, discovered by Colonel Montagu on the 

 coast of Devonshire, and described by him in the Transac- 

 tions of the Linnean Society. It was ActcBon viridis, the 

 Green Actseon. This is not the place to describe it, but I 

 have attempted to do so elsewhere."^ See instructive figures 

 in Alg. Brit., PL xix., and Phyc. Brit., PL xciii. 



Genus LXXXYIII. BEYOPSIS, Zamour. 



Gen. Char. Prond membranaceous, fihform, tubular, cylindri- 

 cal, ghstening, branched, the branches imbricated or distichous, 

 and pinnated, filled with a fine green minute granuhferous fluid. 

 — The name is from two Greek words signifying the appearance 

 of a moss, — Greville. 



1. Bryopsis plumosa, Lam. (Plate XYI. fig. 64, frond, 

 natural size, and a portion magnified.) 

 * Hab. In the sea on stones and rocks, and in rock-pools. 

 Annual. Summer. Scotland, England, and Ireland. Not 

 very common in Scotland. I first procured it at the Black 

 rocks, Troon, in Ayrshire. I afterwards found at Saltcoats 

 the largest and richest specimens I have ever met with. 

 Gathered by the Eev. G. Laing and by Mr. E. M. Stark at 

 Joppa, near Edinburgh, and by Mrs. Stark, at Dunbar. 



Excursions to Arran/ by the Author. 



* c 



