OF NORTHUMBERLAND AND DURHAM. 309 



On rocks and Algee in tidal pools. Very common. Most 

 abundant above half-tide level. — N. D. 



3. C. FLExuosA, Dillw. Hai'v. Man., p. 202. 



Conf. flexuosa. E. Bot., t. 1944. 

 " In Jarrow Slake and Southwick Marsh." — Winch. I have 

 not gathered this plant, and do not knovv how far Jarrow and 

 Southwick specimens may agree with the C. flexuosa of Mrs. 

 Griffiths, to which Dr. Harvey has restricted his description in the 

 *' Phycologia ;" but in all probability this is quite a different 

 species. — D. 



4. C. GRACILIS, Griff. Harv. Man.,p. 202. Phyc. Brit., t. 18. 



Atlas, PL LXV., fig. 302. Johnst. and Or., t. 

 192. 

 On Alg£e, corallines, &c., at extreme low- water mark. Near 

 Hartley.— a .S'. B.—^. 



5. C. LANOSA, Kutz. Harv. Man., p. 204. Phyc. Brit., t. 6. 



Atlas, PL LXYL, fig. 308. Johnst. and Cr., t. 

 195. 

 Conf. kmosa. E. Bot., t. 2099. 

 On the larger Alg£e in tidal pools. Common. — N. D. 



6. 0. UNCiALis, Hai^v, Harv. Man., p. 204. Phyc. Brit., t. 



207. Atlas, PL LXYL, fig. 309. Johnst. and 

 Cr., vol. iv., p. 55. 

 Near Berwick. — Dr. Johnston. Near Whitley. — G. S. B. — N. 



7. C. ARCTA, Kutz. Harv. Man., p. 204. Phyc. Brit., t. 135. 



Atlas, PL LXVL, fig. 310. Johnst. and Cr., t. 

 196 



Conf. arcta. E. Bot., t. 2098. 

 On rocks and stones from beyond low-water mark to above 

 half-tide level. Not uncommon. — N. D. 



VOL. IV., PART IV. 2 p 



