Dr. W. H. Harvey on new genera and species of Alga. 333 



headed cotton-grass {Eriophorum pohjcephalum) ; whence the 

 trivial name. The genus itself is inscribed to the memory of the 

 late lamented Lieut. Bellot of the French Navy, who so nobly 

 volunteered his services for the search after Sir John Franklin, 

 and whose untimely death will not soon be forgotten. 



2. CuRDiEA, Harv. 



(but not of Harv. MS. in Herb. T. C. D. 1852). 



Frons plana, coriaceo-membranacea, laciniata, e margine ssepe 

 pinnatim foliolosa, duplici strato constituta ; cellulis interioribus 

 rotundato-angulatis majoribus peripheriam versus sensim mi- 

 noribus, periphericis minimis verticaliter subseriatis. Coccidia 

 marginalia, globosa, sessilia, sporas minutas in filis ex placenta 

 carnosa centrali radiantibus evolutas, intra pericarpium cras- 

 sissimum cellulosum carpostomio apertum foveutia. Tefrasporce 

 in nematheciis intramarginalibus oblongis evolutse, cruciatim 

 divisse. — Algce rubro-sanguinese, siccitate rigidse. 



Curdiea laciniata, Harv. 



Hab. Cast ashore at Port Faiiy, Port Phillip Heads, and 

 Western Port. Not uncommon. 



Frond 1 to 2 feet long, very variable in ramification ; the 

 lacinia from i inch to an inch broad, cuneate at base, linear- 

 oblong, variously cleft, the lesser segments narrow, obtuse. 

 Sometimes the margin is winged with leaflets. Substance when 

 dry rigid, seldom adhering to paper. Coccidia marginal, gland- 

 like, generally very numerous on fertile plants. Nemathecia 

 oblong or linear, within the margin, elevated, composed of ver- 

 tical, articulated filaments, among which the tetraspores are 

 found. 



In habit this plant resembles a large coarse-growing specimen 

 of CaUophyllis laciniata, but the structure and fruit are very dif- 

 ferent. Curdiea belongs to SpJuErococcoidece, and stands next to 

 the section Podeum of Gracilai-ia , from which and from every 

 other allied genus the position of the tetraspores separates it. 

 The name is bestowed in honour of Dr. Uaniel Curdie of Tan- 

 darook, near Geelong, an early observer of the Algse of Australia, 

 and to whom I am indebted for an interesting collection of Algse 

 collected at the mouth of the Glenelg River, near Cape North- 

 umberland. I originally selected a genus of Chcetangiece to bear 

 Dr. Curdie's name, and have distributed specimens to some 

 friends under the name C. australis, Harv. MSS., but since my 

 visit to Australia I have ascertained that the plant so named is 

 identical with Acrotylus australis, J. Ag., with whose cystocarp 

 Prof. Agardh was unacquainted when he classed it among Cry- 



