22(> ALG.E CHLOROSPERME^:. [Conferva. 



slender, much curled and twisted, forming broad, closely entan- 

 gled strata; articulations 2 — 3 times longer than broad. Dilhv. 

 t. 46. Harv. in Hook. Br. Fl. v. ii. p. 352. 



On marine rocks, abundant. 



14. C. implexa, Dilhv. Interwoven Conferva. Filaments 

 very slender, capillary, rather flaccid, forming extensive, much 

 entangled, bright-green strata; articulations rather longer than 

 broad. Dillw. Sup. t. B. Harv. in Hook. Br. Fl. v. ii. p. 352. 

 Bangia Joknstoni, Grev. in Johnst. Berw. Fl. v. ii. p. 260. 



On marine rocks. Bantry ; Miss Hutchins, Filaments half the 

 diameter of C. tortuosa, with shorter joints. 



15. C. ulothrix, Lyngb. Short-jointed curled Conferva. 

 Filaments slender, flexuose, entangled, somewhat rigid ; articu- 

 lations rather shorter than broad. Harv. in Hook. Br. FL v. ii. 

 p. 353. 



In rocky pools, attached to small Algae. Bantry : Miss Hutchins, 

 whose specimen is mixed with C. implexa, from which this species i9 

 solely distinguished by its shorter joints. 



16. C. perreptans, Carm. Creeping Conferva. Filaments 

 slender, crisped, entangled into dull-green strata, bent at acute 

 angles, and at the genuflexion sending out attenuated creeping 

 radicles ; articulations about twice as long as broad. Zygnema 

 littoreum, Lyngb. Hydr. Dan. t. 59. — C. perreptans, Harv. in 

 Hook. Br. Fl. v. ii. p. 353. 



On rocks, near the verge of high-water mark. Miltown Malbay. 

 This may, perhaps, be only a variety of C. tortuosa. It has lately 

 been discovered on the Coast of Devonshire by Mrs. Griffiths. 



17. C. arenosa, Carm. Strand Conferva. Filaments slender, 

 rigid, interwoven into broad strata ; articulations 3 — 5 times 

 longer than broad. Harv. in Hook. Br. Fl. v. ii. p. 353. 



On the flat shore, about half-tide level. Bantry bay ; Mr. R. Ball. 

 Filaments very long and slender, forming wide strata. 



d. Filaments tufted, with a scutate root, straight, green. Inhabit 



the sea. 



18. C. Melagonium, Web. et Mohr., Ag. Wiry Conferva. 

 Filaments elongate, scattered, straight, thick, erect, stiff and 

 wiry, dark-green ; articulations twice as long as broad. Dillw. 

 Suppl. t. B. Harv. in Hook. Br. Fl. v. ii. p. 353. 



On rocky shores, rare. Miltown Malbay, &c. Portrush ; Mr. D. 



Moore. 



19. C. area, Dilhv. Harsh verdigris Conferva. Filaments 

 elongated, tufted, straight, harsh, brittle, yellow-green ; articu- 

 lations as long as broad. Dillw. t. 80. E. Bot. t. 1929. Harv. 

 in Hook. Br. Fl. v. ii. p. 354. 



