“> a's 
PLUMULARIA. 145 
(Hilis.) It is sometimes a foot in height. The largest I 
have were got by Major Martin in Lough Swilly. Some 
years ago I gathered great abundance on the shore betwixt 
Leith and Portobello, with vesicles which Dr. Johnston 
speaks of as rather rare. In May, 1851, I had the pleasure 
of gathering, at Exmouth, in company with Mrs. Gulson, 
specimens in fine fructification, and of receiving about the 
same time, from Mrs. Griffiths and Miss Cutler, other spe- 
cimens loaded with vesicles. Sir J. G. Dalyell states that 
the specimens are either yellow or white, but that on the 
same specimen there is not a mixture, for all are yellow or 
all are white. He has observed that both, when mature, 
sent forth planule, little living creatures; but we have not 
“space for his observations; and, for the same reason, we 
must refer to Dr. Johnston’s excellent work, page 91, for 
very interesting and instructive observations by Professor 
Grant. 
2. Prumuaria cristata, Podded Coralline, His. (Plate 
VIII. fig. 23.) 
Hab. On Fuci, especially Halidrys siliquosa. ‘“ Some- 
times on mussels and other shells.” Mrs. Griffiths, Miss Cut- 
ler, Mrs. Alexander, Devonshire; around the coast of Ire- 
land, Mr. W. Thompson; coast of Ayrshire, D. L.; Dublin 
L 
97S 
Se te Fe 
