ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
339 
of the BuxbaumiaceaB with the genus Diphyscium (1 sp.). The pleuro- 
carpie mosses arc now entered on with the families, — Fontinalacete : — 
Fontinalis (11 sp.), Dickelyma (2 sp.) ; Cryphaeacese : — Cryphsea (1 sp.), 
Leucodon (1 sp.), Antitrichia (2 sp.) ; Neckeraceae : — Leptodon (L sp.), 
NecJcera (9 sp.), Homalia (2 sp.) ; Pterygophyllaceae : — Pterygopliyllum 
(1 sp.), Cyclodictyon (1 sp.), Daltonia (1 sp. ); Fabroniaceae : — Fabronia 
(3 sp.), Anacamptodon (1 sp.), Habrodon (1 sp.), Clasmatodon (1 sp.), 
Myrinia (1 sp.) ; and the commencement of the Leskeaceae : — Myurella 
(3 sp.), Leslcea (4 sp.), with the beginning of Anomodon (8 sp.). 
Algae. 
New Genera and Species of Algae.* — The most recent instalment 
of Prof. J. G. Agardh’s ‘ Analecta Algologica ’ is largely devoted to a 
monograph of the genus Ceramium , the species of which, 63 in number, 
are described in detail and rearranged from characters derived from the 
structure of the frond and the arrangement of the sphaerospores. In 
addition to remarks on other genera, the following new genera are 
described : — 
Herpophyllum (Delesseriaceae). Frons una pagina inferiore adfixa 
superiore convexiu>cula, quasi ex tereti complanata, enervis cellulis 
subinordinatis pleiostromaticis contexta, interioribus majoribus cylin- 
draceo-oblongis per plures series dense juxtapositis, stratum interius for- 
mantibus, exterioribus multo minoribus subrotundatis aut secus superfi- 
ciem paulo longioribus, laxius juxtapositis, stratum exterius formantibus. 
Cystocarpia in superiore pagina sessilia, marginibus vicina, intra 
pericarpium hemisphsericum submonostromaticum nucleum simplicem 
foventia; placenta basilis, nodo oblongo constituta, sursum fila 
gemmidiifera plurima emittens ; fila articulata parce dichotoma fastigiata, 
superne invicem sublibera, in articulis terminalibus clavato-obovatis 
gemmidia conformia subsingula foventia. 
Padiyglossum (Delesseriaceie). Frons plana crassius membranacea, 
linearis, prolificationibus intra marginem ortis, saepe ex eodem loco 
pluribus, quasi in rosulas sparsas conjunctis uberius ramosa, facie 
tota conformiter cellulosa subavenia, cellularum seriebus inter paginas 
numerosis radiatim superpositis contexta, cellulis intimis unicam seriern 
inter margines formantibus suboblongis, exterioribus subcubicis. Sori 
in jugis linearibus intra margines utrinque elevatis evoluti, nema- 
theciosi, inter fila elongata articulata sterilia sphserosporas paucas 
rotundatas triangule divisas infra superficiem sitas generantes. 
Dasydonium (allied to Polyzonia). Frons teretiuscula polysiphonea, 
pinnatim ramosa ramulisque fere ad quodque geniculum quoquoversum 
egredientibus dense vestita, subspongiosa ; ramulis ambitu subdefinitis 
patentissimis, a rachide sua recurvata, deorsum nuda sursum ramellos 
alternantes longe acuminatos et subdivergentes emittentibus. Stichidia 
a rachide ramulorum transmutata leguminiformia fere in gyrum recurvata, 
apicibus obtusis oblonga, ramellis persistentibus a lateribus et sursum 
armata, sph^rosporas magnas, unica serie curvata dispositas, foventia. 
* Acta Univ. Lund, xxx. (1893, ’94) 99 pp. and 1 pi. Cf. this Journal, 1894, 
p. 598. 
