150 HISTOllY OF BRITISH ZOOPHYTES. 



not he very unwell some time ago ? You would be sorry 

 for him theu, I am sure/^ — " Ou, ay, he was sairly pained 

 wi' rheumaticks ; but Fm aye unco' thankful when trouble 

 keeps atf my ain body." 



5. Plumularia setacea. Sea Bristles, Ullis. (Plate 

 IX. fig. 26.) 



Hab. On seaweeds and on shells. 



This coralline is more common on the Ayrshire coast than 

 PL pi?i?tafa, being at times found in considerable abundance 

 intertwined with the branches of Ilalidri/s drifted ashore. 

 We have occasionally observed it on shells and also on crabs. 

 It sometimes attains the height of six inches, and then it 

 almost rivals the preceding in beauty, but with us it is 

 seldom the half of that height. The finest specimen I have 

 seen was dredged in good company, in Loch Fine, with 

 Professor John Fleming, of Edinburgh, and Mr. Smith, of 

 Jordanhill, aboard his yacht, the 'Raven.'' It was not 

 above three inches in height, but the vesicles were tliickly 

 clustered along the stem on each side, of a fine red colour, 

 whereas they are generally said to be yellow. Dr. Johnston 

 gives good distinguishing marks betwixt it and PL pi?i?iala. 

 In the latter there are three pinnse on each internode ; 

 in PL detacea there is only one, and it springs immediately 



