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BIBLIOGRAPHY. 
excellent account (Proc. American Acad, of Arts and Sciences, 
Yol. xxvi.) of the tetraspores and cystocarps, completes our 
knowledge of the reproductive organs of this interesting parasite. 
The male plants of Harveyella mirabilis, Schmitz et Rke., the 
next plant mentioned, may be distinguished by their uniform 
brown colour, and by being surrounded by a semi-translucent 
yellowish border. A short distance below the surface of the lobes 
numerous smaller cells appear, and from these arise tubes about 
10 /x wide, and the pollinoids are arranged in these in single or 
double rows of four to six, and as they are discharged fresh 
pollinoids appear to be formed from the brown cells at the base 
of the tubes. 
The antheridia of Phyllophora rubens , Grer., are subspherical, 
stalked, white bodies visible to the naked eye. The globular 
bodies contain several cavities, from the sides of which spring 
minute filaments bearing pollinoids at their extremities. 
In Cystoclonium purpurascens , Kiitz., according to the author, 
the antheridia are formed from cells just below the ordinary cortical 
cells, which divide vertically to form the cells containing the 
pollinoids. 
In Sphcerococcus coronopifolius, Stackh., small clear spots rather 
larger than the ordinary cortical cells were noticed, a section show- 
ing “ the usual structure of a simple antheridium, in which a basal 
cell produces four smaller cells above it, and these may, either at 
once or by again dividing vertically, produce the elongated bodies 
that actually put forth the pollinoids.” 
The author then proceeds to describe the antheridia of Gracilarta 
confervoides , Grev., and Rhodymenia palmata, Grev., both of which 
have been figured and described by Bornet and Thuret. With 
regard to the antheridia of R. palmata , however, the author states 
that he considers they have “ no fecundating corpuscles, and they 
may, indeed, be a case of degradation from progenitors possessing 
the necessary capacities.” 
In Nitophyllum Gmelini , Grev., Mr. Buffham found groups of 
antheridia of the ordinary type, not only in elongated patches near 
the margin of the plant, but also in minute narrow processes 
springing from the margin. 
In j Delesseria alata , Lamour., antheridia very similar to those of 
Nitophyllum are found in “ minute leaflets, arising from the apices 
of the plant, and especially in groups from the axils.” 
In D. ruscifolia , Lamour., the antheridia occur on all the leaflets 
in groups lying on each side of the midrib. 
In Hydrolap athum sanguineum , Stackh., the antheridia are 
found on minute leaflets arising from the denuded midribs of the 
“ leaves.” 
In Odonthalia dentata , Lyngb., antheridia are found on tufts of 
paler-coloured leaflets arising from near the axils of the fronds. 
The antheridia of Laurencia obtusa , Lamour., are formed in a 
cup-like hollow at the apex of each branchlet. The hollow con- 
