Ser. CuLonosPpERME&®. Fam. Osci//atoriee. 
PiatEe CCCV. 
CALOTHRIX CASPITULA, Harv. 
Gen. Cuar. Filaments destitute of a mucous layer, erect, tufted or ag- 
gregated, fixed at the base, somewhat rigid, not oscillating. Tube 
continuous ; endochrome green, densely annulated, at length dissolved 
into lenticular sporidia. Ca orurtx (4y.),—from kados, beautiful, 
and 6pi€, a hair. 
CaLorurix cespitula; filaments forming close, convex, blackish-green 
tufts, densely packed, flexuous, flaccid, obtuse, not attenuated, here 
and there spuriously branched: border of the filaments narrow. 
CaLorarix cespitula, Harv. in Hook. Br. Fl. vol.ii. p. 369. Harv. in Mack. 
Fl. Hib. part 3. p. 237. Harv. Man. ed. 2. p. 225. 
LEIBLBINIA cespitula, Ky. Sp. Aly. p. 278. 
Haz. Marine rocks, near high-water mark. Annual? Summer. Miltown 
Malbay, 1831. (W.H.Z.) 
Geroer. Distr.——? Adriatic (Kvitzing). 
Descr. Tufts very convex, from a quarter inch to an inch and a half in diameter, 
hemispherical or irregular in outline, deep blackish-green, flaccid, yielding 
io the touch, growing either on the naked rock or on corallines, shells, Xe. 
Filaments densely packed together, often twisted round each other in small 
bundles, either simple or appositionally branched, obtuse, cylindrical, not 
tapering to either end; branches erect. Hnxdochrome dense, filling the tube ; 
the strize dense and strongly marked; border narrow. 
I 
Pw 
I can say but little respecting this species, although I ain re- 
sponsible for having originally given it a name. ‘lhe speciimens 
gathered by me in 1831,—from one of which, assisted by a 
sketch made at the time from the fresh plant, the plate now 
given has been prepared,—were collected in rock pools of salt 
water into which the sea only flows at spring tides, situated at 
the extremity of “Spanish Pomt,” Miltown Malbay. I have 
repeatedly sought for the plant on subsequent visits to the west 
coast, but never successfully, nor have I received specimens 
from any correspondent. The only continental author who has 
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