Marine Algce of Berwick-on-Tweed. 361 



ADDENDA. 



To follow Dermocarpa Schousboei, p. 231. 



Dermocarpa violacea, Cm. 



Ann. Sc. Nat. 4th Ser. vol. ix., pi. 3, fig. 2a-d. 

 Descr. et Fig. Dermocarpa violacea, Cm., I.e. ; Cm., Fl. Finisfc., p. 147 ; 

 pi. 18, gen. 121 ; Hauck, Meeresalg., p. 517 ; Bomet et Thuret, 

 Notes Algol, n., p. 77. 

 Sab. On Fucus vesiculosus near low-water mark. Jan. — Mar. Rare. 



Berwick Bay. 

 A rare and interesting species forming roundish or irregular 

 spots from 3 — 5 mm. in diameter on Fucus vesiculosus, near low- 

 water mark. The patches, which are visible to the naked eye, 

 are larger than those of any of the other species of Dermocarpa, 

 except D. rosea, found with us. The cellules are pear-shaped, and 

 of a pinkish- violet colour. 



Dermocarpa rosea (Eeinsch.) 



Sphsenosiphon roseus, Eeinsch, Contrib. ad Algol, et Fungol., 

 vol. i., p. 18, t. 26, fig. 4a-b et c. 

 Hab. On the stems of Laminaria hyperborea. Autumn and Winter. 



Rare. Berwick Bay. 

 Perhaps only a variety of Dermocarpa violacea, but the oval 

 cellules are of a clear rose-pink colour, and form indefinitely 

 expanded patches, often one or two inches in diameter, and not 

 small round spots. 



To follow MYRIONEMA, p. 289. 



ASOOOYCLITS, Eke. 



Ascocyclus reptans (Orn.) Rice. 



Algenflora der westlichen Ostsee, p. 44. — Ectocarpus reptans, 

 Cm., Fl. du Finist., p. 161, pi. 24, no. 158, figs. 3 et 4. 

 Descr. Ectocarpus reptans, Cm., I.e. (non Kjellm.) 

 Fig. Ascocyclus reptans, RJce., Atlas deutscher Meeresalgen, t. 15. 

 Hab. On Chondrus crispus, JHalidrys, etc., between tide-marks. 

 Autumn. Bare. Berwick Bay. 

 1 u 



