Notes on Marine Algoe. By E. A. L. Batters. Ill 



able quantity, but very irregular in its appearance. 



13. LoMENTABiA ROSEA, (Thur.) {Chrysymenia rosea, Harv.) — 

 Very rare indeed. My specimen of the species is small, and 

 appears to be the variety called by Harvey, Ghrysymenia rosea var. 

 Oreadensis. I found it growing on an old stem of Laminaria 

 digitata to which it was attached by long fibres, with rootlets here 

 and there. It is a very beautiful little alga. 



14. Hapalidiitm phtllactiditjm, {Kut%.') — Parasitical on the 

 preceding. I have only found one specimen of this species, but 

 still I have no doubt that it is not uncommon at Berwick, as it 

 ought to occur on the fronds of Chrysymenia clavellosa. 



15. Delesseria HYPOGLossuM, (^^^.^ — Very rare indeed. Cast 

 up during the summer from deep water. I have always found 

 this species in company with Bonnemaisonia asparagoides although 

 it is rather rarer than that plant. 



16. Delesseria ruscifolia., {Lamour.) — Eare, but not so rare 

 as the preceding. I have never found this plant growing. It is 

 sometimes cast ashore at the "■ Greenses." 



17. NiTOPHYLLUM PUNOTATUM, (Grev.) — Not uncommon. Al- 

 ways found floating, though not unfrequently attached to some 

 other alga. This is a very variable species; sometimes the 

 fronds are almost entire and more than an inch across, at other 

 times much and irregularly laciniated, the segments only a few 

 lines broad ; the margins too are sometimes strongly curled, but 

 the thin substance, bright, light pink colour, glossiness when dry, 

 and entire absence of veiny lines, render it easy of recognition. 



18. NiTOPHYLLTJMBoNisrEMAisoNi, (G^ye^;). — Eathcrraro. This, 

 like the preceding species, is always found floating. Holy Island 

 specimens are much finer than those found at Berwick, although 

 it is often thrown ashore in considerable quantity at the latter 

 place. The veins which rise from the base of the frond, and 

 spread faintly upwards, are a great aid in distinguishing this 

 species from iV. punctatum, which otherwise it somewhat resem- 

 bles. 



19. Catenella Opuntia, (Grev.) — Eare, although found in 

 considerable quantity when it does occur. This species loves the 

 shade, and is to be found growing on the sides of some of the 

 caves at Dodds' Well and elsewhere. It is a small plant often 

 not half an inch high, and unless carefully looked for is likely to 

 escape observation. 



20. CERAMTcrii flabelligerum, (J. Ag.) — ^Eather rare. Paras- 



