642 
Endzellen,n/cA/ Gliederzelleo ». Through lack of material Schmitz was 
unable to examine thè antheridia of Pterocladia and Hi/pnea, in 
thè light of Guignard's observations. Of thè chains of spermatangia, 
as described in Meloòesm deformans, Solms. by Solras Laubach and 
in Melobesia Lamx. by Guignard, Sohmitz says:«Ich 
selbst habe leider Melobesia-?LXìX\iev\à\Qii rait unzweifelhaften Sper- 
matangien-Ketten aneli jetzt noch nicht zu Gesicht bekommen». 
Schmitz. however, does not deny thè existence of such chains * *), 
for he finds them himself in a small unnamed Floridean, parasitic 
on Gelidium corneum, frora Tangiers. In this plant he does not find 
thè spermatangia-chains to be formed by repeated bipartition (i. e. 
in an intercalary manner) and suggests it may turn out that they are 
formed by thè successive basipetal abstriction of terminal superficial 
spermatangia which bave remained attached in a chain for a long 
time. This mode of consideration would, if correct and generally appli- 
cable, briug plants possessing spermatangia-chains, into harmony with 
his mie. It must, however, be remembered that Schmitz thus brings 
thè anoraalous antheridia of Melobesia under his generai mie, not 
by a direct explanation of thè condition in Melobesia itself, but 
by suggestion of a coraparison with another case, of which thè ex- 
planation is admittedly hypothetical. It is iraportant to bear in mind 
these apparent exceptions to Schmitz's generai mie because of their 
hearing on thè significance to be attached to thè structure and mode 
of formation of thè antheridia in thè Bangiacece. In this group thè 
spermatium is formed from its mother-cell, thè spermatangium, in 
essentially thè same way as in thè Eu-Floridece . In Erythrolri- 
Ghia only is thè spermatangium superficiale being cut off as a 
small celi, from an ordinary thallus celi, on its outer side. In Ban- 
già and Porphyra thè spermatangia are formed by thè repeated 
segmentation in all directions of space, of an ordinary superficial, 
vegetative celi. This forra of antheridiurn is, it must be acknowled- 
ged, different from thè ordinary forra of antheridiurn in thè Eu- 
Floridece, and Schmitz is entitled to attach all thè importance pos- 
sible, to it. 
2. Female organSe or Carpogonia. 
In thè Eu-Floridece thè end celi of a specially formed cell-fila- 
ment, thè carpogenous filaraent or branch, is thè female sexual or- 
Solms Laubach: Die Corallinaceen, ISSI, S. 3. 
* I bave seen them myself in thè antheridia of Lilhophyllum liclienoides. 
