ESCHAROIDES ROSACEA. 337 



lobes, and more or less curved or contorted; white or 

 of a delicate rose-colour. Zooecia ovate, slightly convex, 

 walls thick and dense, surface granulated ; primary 

 orifice simple, semielliptical, on a level with the sur- 

 face of the zoarium ; secondary aperture arched above, 

 with a rather deep and narrow sinus on the lower 

 margin, immersed ; an avicularium on one side of the 

 sinus, with a semicircular mandible. Ooscia hemi- 

 spherical, granulated. 

 Height from ^ to | inch. 



Habitat. On stones and shells &c., from moderate 

 depths to deep water. 



Localities. Loch Fyne, on Pecten opercularis (A. M. 

 N.) : Orkney (Busk) : off Shetland, 80-100 fathoms (J. 

 Gwyn Jeffreys, fide Peach) . 



Geographical Distribution. Finmark, on Balanus, 

 Rhynchonella, Ptilota plumosa (Loven) : Spitzbergen, 20 

 fathoms (Malmgren) : Norway (M'Andrew) : St. George^s 

 Bank, lat. 42° 56'-5 N., long. 64° 51'-3 W. (Smith and 

 Harger) . 



E. rosacea is generally of small size, not much exceed- 

 ing half an inch in height, and possesses a very characte- 

 ristic habit. A short stem rises from a small incrusting 

 mass of cells ; and this divides irregularly into a number 

 of foliaceous, flattened, rather thicK branches, variously 

 curved and twisted, and terminating above in short lobes, 

 which expand towards their extremity. Young specimens 

 consist of a simple expansion cleft above into two lobes, 

 and are very delicately tinted. Possibly the colour may 

 be dependent on age. Smitt describes his Norwegian 

 specimens as glossy white. 



The cells are very slightly convex ; and the boundaries 

 between them are almost obliterated in the older portions 

 of the colony by the great overgrowth of calcareous 



z 



