PLUMULARIA. Tou 
from the joint, which has two or three rings. ‘The upper 
part of the vesicles is prolonged into a short tube, affording 
an additional distinctive character betwixt it and Pd. pin- 
nata, which it so closely resembles.” (Hassalt.) 
6. Prumutarta Caruarina, Dr. Johnston. (Plate IX. 
fig. 27.) 
Hab. On old shells, corallimes, and Asczdza ; deep water. 
Frequent in Berwick Bay, Dr. Johnston ; Scarborough, rare, 
Mr. Bean; Frith of Forth, Mr. Coldstream; Isle of Man, 
Prof. Ed. Forbes; Howth and Lambay, Mr. Hassall; Corn- 
wall, Mr. Couch and Mr. Peach; Aberdeen, Mr. J. Mac- - 
gillivray ; near the Mull of Cantyre, Mr. Hyndman; Lam- 
lash Bay, D. L. 
Dr. Johnston says, “This equals P/. pinnata in size and 
delicacy, but it differs from it very obviously in having 
opposite pinnee, which, instead of beg arched, bend in- 
wards, so as to render the general form of the coralline con- 
cave, on a front view; an appearance produced by the 
pinnee originating, not from the sides, but from the anterior 
face of the stem.” 
To be convinced of the great beauty of this elegant 
coralline, we must see itself, or see in Dr. Johnston’s 
work the graceful figure of it furnished by his accomplished 
