OF NORTHUMBERLAND AND DURHAM. 303 



3. 0. Deslongchampsii, Chauv. — Harv. Man., p. 162. Phyc. 



Brit., t. 219. Atlas, PI. LIT., fig. 236. Johnst. 

 and Cr., t. 101. 

 On rocks and Algsa, between tide marks. Not uncommon. — 

 N. D. 



4. C. diaphanum, Ag. Harv. Man., p. 163. Pliyc. Brit., t. 



193. Atlas, PI. LIL, fig. 237. Johnst. and 

 Cr., t. 102. 

 Conf. diapJiana. E. Bot., t. 1742. 

 On the smaller Algre in tidal pools. Not rare.— N. D. 



5. 0. FLABELLiGERUM, t7. J.r/. Harv. Man., p. 165. Phyc. Brit., 



t. 144. Atlas, PI. LIL, fig. 238. Johnst. and 

 Cr., vol. ii.,p. 109. 

 On the smaller Alga3. Very rare. Near Whitley. — G. S. B. 



— N. 



6. C. ACANTHONOTUM, Ccirm, Harv. Man., p. 165. Phyc. 



Brit., t. 140. Atlas, PI. LIL, fig. 240. Johnst. 



and Cr., t. 107. 

 Of frequent occurrence on rocks which are left dry at ebb- 

 tide, either near low-water mark, or at the extreme limit of 

 high water on perpendicular walls and roclvs ; often amongst 

 mussel shells. — N. D. 



7. C. ciLiATUM, Ducluz. Harv. Man., p. 166. Phyc. Brit., t. 



139. Atlas, PL LIL, fig. 241. Johnst. and 

 Cr., t. 108. 

 Conf. ciliata. E. Bot., t. 2428. 

 " On rocks and stones on the coast. Rare." — Winch. Near 

 Berwick. — Dr. Johnston. 



This species has never occurred to me on our coast ; it is not 

 improbable that the plant referred to by Mr. Winch is really 

 G. acanthonotum, which is unnoticed in the " Flora." Some 

 doubt attaches also to Dr. Johnston's reference. 



