623 
monospore in the fertile cells, as presumed by Batters, has been confirmed, and it 
seems that all the cells of the fertile cell-rows are capable of producing a monospore. 
The formation of monospores is in good accordance with the reproduction of 
the Bangiales, but the presence of pit-connections between the cells shows that 
Conchocelis cannot be referred to this group, as such connections have never been 
observed within the Bangiales. The plant must therefore be referred to the Floridee, 
but its relationship within this group is very doubtful. 
several Nemalionales, but they are there always 
produced in particular monosporangia different 
from the other cells. Monospores have other- 
wise been found in female plants of Nitophyllum 
punctatum' where they arise in cells scarcely 
different from the vegetative cells, situated in 
groups near the procarps. This occurrence seems, 
however, to have no bearing on the consideration 
ofthe relationship of Conchocelis. Further researches 
are needed for the elucidation of this question. 
Conchocelis rosea has been met with in nearly 
all the Danish waters except the Baltic, growing 
in the calcareous shells of the Serpulids Spirorbis 
and Pomatocerus triquetrus and of various mol- 
luses (Buccinum undatum, Lütorina littorea, Mytilus, 
Cyprina islandica, Astarte? a. o.). According to Dr. 
JonHs. SCHMIDT it has also been met with in a 
Monospores are known in 
Fig. 619. 
calcareous stone. It has been gathered at depths 
from 1 to 32 metres. Fertile cell-rows have been 
met with in the months April to October (it has not 
been gathered in the winter months). 
Localities. Ns: eP, off Lodbjerg light-house, 24 m, 
in Buceinum undatum. — Lf: Nykøbing, in Bucc. und. (Teil- 
mann Friis). — Kn: fG, Tonneberg Banke, 15 m; off Aalbæk, 
22 m, in Bucc. und.; at Hirsholmene and in numerous places 
near Frederikshavn, most frequently in Spirorbis and Pomato- 
cerus. — Ke: Groves Flak. 23m and 32 m, in Cyprina isl. 
Conchocelis rosea. From shell of Spirorbis 
from Deget near Frederikshavn, treated with 
Carnoy’s fluid, and stained with hematoxylin. 
A, long cell showing chromatophores. B, in- 
flated cells. C, spindle-shaped cells; a fertile 
cell-row is given off from one of them. The 
nuclei are distinct, the chromatophores only 
feebly stained. D, end-cell of a broad cell- 
row, a pit-connection is seen in the trans- 
verse wall. E, Four globular monospores are 
formed in a fertile cell-row. A, B, D 630 :1. 
C 510:1. 
(F. Borgesen,!); Søborg Hoved Grund, in Littorina lit. Gilleleje, in Spirorbis. — Km: East of Læsø 
Rende, in Spir.; — Sa: 1'/2 miles N.E. by N. of Sejerø, in Mytilus; Lille Grund, in Spir. — Sb: Hov 
Sand, in Spir.; Lohals, in Spir. Spodsbjerg Mole, in Spir.; off Holmegaard, in Spir. — Su: Skodsborg, 
in a calcareous stone (determ. Johs. Schmidt). 
Halosaccion ramentaceum (L.) J. Agardh. 
About 50 years ago Mr. O. SmitH sent me some Algæ cast ashore at Lerchen- 
borg, Store Belt. Among these Algæ a specimen of Halosaccion ramentaceum is found, 
1 N. SvEDELIUs, Über Sporen an Geschlechtspflanzen von Nitophyllum punctatum. Ber deut. bot. 
Ges. 32, 1914, p. 106. 
