LEPRALIA. 307 



Sana Island, off whicli this and several very interesting 

 mollusks and zoophytes have been dredged, is near the 

 coast of Cantire, in Argyleshire. This coast, from Macri- 

 hanish Bay to the Mull and Southend, is rich in algse and 

 zoophytes ; but in visiting it some time ago, not having a 

 boat, I had to rest satisfied with the rejectamenta on the 

 strand ; and there are few portions of the Scottish shores 

 better fitted to gratify a naturalist. My friend, Mr. Hynd- 

 man, of BeKast, to whom this curious Lejpralia has been 

 dedicated by Dr. Johnston, has every encouragement to 

 cross again to Sana. Ireland is scarcely more than twenty 

 miles from Cantire, in the county of Argyle. 



The cells of Mr. Hyndman's Lepralia are described by 

 Dr. Johnston as " distinct, but contiguous, of a medium 

 size, sub-globular, narrowed and somewhat raised anteriorly, 

 the back smooth and thickish, but the base of the cells, or 

 the space between them, is occasionally perforated with a 

 series of punctures. The aperture has a neat and deep 

 sinus on the proximal side, and the^ distal margin is plain 

 and rounded. The stout, short, tubular process on the 

 posterior side of the cell is always very obvious ; and there 

 issues from it a long slender bristle, which, however, is often 

 broken away. Ovarian capsules proportionably small.''^ 



