256 FLORA OP NEW ZEALAND. [Alga. 



1 inch broad at the truncate base, gradually widening upwards to two inches, then forking ; the segments being 

 about f of an inch wide. Every part is densely beset with filiform or cuneato-multifid leaflets, less than an inch 

 in length, and the margin is fringed with similar processes. Substance delicately gelatinoso-membranaceous ; when 

 fresh, " covered with viscid matter " (D. L.). Structure as in the genus ; the medullary stratum rather lax. 



Tribe XII. SPTRIBIACEJE. 

 Gen. LXXXVII. SPYBIDIA. 

 (Harv. in Hook. Br. El. ii. 336 ; Man. 300. Phyc. Brit. t. 46. J. Ag. Sp. Alg. ii. 338. Kiitz. Sp. Alg. p. 665.) 

 1. Spyridia opposita, Harv.; frcmde filiformi decomposite ramosissima, ramis ramulisque ramellis oppo- 

 sitis densissime obsitis, ramellis crebris imbricatis incurvis subdecussatim oppositis vix distichis nee basi 

 angustatis apice acutis simplicibus, articulis ramellorum diametro Eequalibus.— Harv. in Herb. T. C. B. 

 Hab. Chalky Bay, West Coast, Lyall. (Native of South Australia, Mrs. Eddington.) 

 Stems 3-4 inches high, filiform, much branched and bushy, branches and their divisions mostly alternate, the 

 lesser branches virgate. All the younger parts are densely clothed with robust, dark red ramelli, opposite each other 

 in insertion, but not strictly distichous and yet scarcely tetrastichous. Ramelli a line long, incurved, tapering to 

 the acute, simple apex, but not constricted at the base. Fruit unknown.— The first specimens we received of thi?. 

 species were collected in South Australia, near Cape Northumberland, by Mrs. Eddington. 



Tiube XIII. CBBAMIACEM 



Gen. LXXXVIII. CEEAMIUM, Both. 

 (J. Ag. Sp. Alg. ii. 113. Homoceras, Gongroceras, Trichoceras, Celeceras, EcMnoceras, AcanMoceras, Ceramium 



et Pteroceras, Kiitz.) 



1. Ceramium cancellatum, Ag., Sp. Alg. v. 2. p. 145. HooJc.fil. et Harv. Lond. J. Bot. v. 4*.p. 550. 

 El. Ant. v. 1. p. 191. J. Ag. Sp. Alg. v. 2. p. 136. Pteroceras cancellatum, Kiitz. Sp. Alg. p. 690. 



Hab. On various parts of the coast, common, Lyall, Colenso, Bavies, Chapman, etc. (Native of Cape 

 of Good Hope.) 



We have many varieties from various localities. 



2. Ceramium virgatum, Hook. fil. et*Harv., Bond. J. Bot. v.l.p. 445. /. Ag. Sp. Alg. v. 2. p. 137. 

 Hab. Parasitical on Carpophyllum, East Coast, Colenso. 



3. Ceramium vestitum, Harv. ; fronde setacea obsoletissime articulata vel continua, ramis ramulis capil- 

 laribus quaquaversis dichotomo-multiridis densissime vestitis, articulis ramulorum dense corticatis (vix con- 

 spicuis v. omnino obscuris) diametro Eequalibus, axillis patentibus, apicibus patentibus rectis. 



Hab. Port Adventure, Southern Island, Lyall. 



It is not without much hesitation that we propose this species, founded on a solitary specimen. The stature 

 is that of C. rubrum, to whose variety proliferum it may be compared ; but here the ramuli are much more slender 

 in proportion to the maiu branches, much more densely corticated, scarcely obviously articulate, and the apices are 

 straighter. It seems to us to be at least as good a species as C. obsoletum, Ag. 



4. Ceramium rubrum, Ag., Syn. p. 60. J. Ag. Sp. Alg. v. 2. p. 127. Kiitz. Sp. Alg. p. 685. Harv. 

 Phyc. Brit. t. 181. Conferva rubra, E. Bot. t. 1166. Billw. Conf. t. 34. 



Hab. On all the coasts, many varieties, common. (Generally diffused.) 



5. Ceramium diaphanum, Both. J. Ag. Sp. Alg. v. 2. p. 125. Harv. Phyc. Brit. t. 193. Conferva 

 diaphana, Billw. Conf. t. 38. M. Bot. t. 1742. Homoceras pulchellum, Kiitz. 



