1 
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MONOGRAPH OF THE LABOULBEXIACE^. 215 
F 
de in two rows, below a common cavity into which they empty. Iii 
myccs and Eucantharoniyce 
in character. In Caniptoni^ 
cly united to the receptacle. In Campt 
tlie aj)pend;ige and is somcwliat diffcTC] 
Hal cells arc placed around and beside 
general cavity, and are arranged in .several neaily vertical row,'', emptying upward 
through short necks into 
y escape through the terminal po 
of a short secondary neck (Plate VI, ligs. 5 and G). In Eucantharomvces the 
id 
o 
d in nearly 
more numerous 
than in the last mentioned genus. Tiiey empty into a general cavity, which is cen- 
tral and terminal, and are discharged through a well-developed, though somewhat 
irregular, secondary neck (Plate VII, fig. 27). In both these genera the material has 
been so limited in amount, and the antheridia arc so dilTicult to observe by focussing 
through the asymmetjical arrangement of their numerous anthcrldial cells, tlmt 1 have 
r 
been unable to obtain a figure that would show satisfactorily the exact details of 
structure and arrangement presented by the latter. The gross structure is, however, 
made out without diJTiculty, and the general cavity is usually filled -vvith very 
numerous antherozoids, which here and there may be seen in process of formation 
from the antheridial cells in a fashion exactly resembling that which occurs in the 
instances previously described. 
A single type of compound antheridium remains to be mentioned, which occurs in 
Haplomyces and in Cantharomyces, and in this instance also, owing to the lack of 
sufficient material and to the complicated structure of the organ, much remains to 
be learned concerning its exact structure. The type is distinguished from those 
already mentioned from the fact that the secondary neck opens, as far as can be ascer- 
tained from the material available, through a lateral pore, and consists of a central 
cavity almost completely surrounded by the very numerous antheridial cells which 
open into it. This general structure may be made out by focussing through the 
organ; but no further details have been visible in the specimens examined. The an- 
theridium (Plate VII, figs. 3, 9, and 22) is identical in the two genera mentioned, 
except that in Haplomyces it is terminated by a thorn-like cell, while in Cantharo- 
myces it is placed below a well-developed sterile branching portion. With the 
exception of Cantharomyces pnsilhis, ■which may possibly prove to represent a new 
generic type, none of the species of these genera have been seen in a fresh ccndition, 
and they are the only ones possessing compound antheridia in which the discharge of 
the antherozoids has not been observed. The antheridium in these forms is the most 
highly developed that has thus far been noticed, and further observations upon it 
are greatly to be desired. 
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