MONOGRAPH OF THE LABOULBENIACE^. 275 
the sub-basal cell of the receptacle. Whether the aiithcridium as a whole is truly terminal, and 
developed from the smaller of the two primary spore seguieuts, is uncertain. When mature, it 
is a somewhat complicated organ ; but in a general way corresponds to that of Dimorphomvces, 
except in the number and arrangement of its antlieridial cells. The latter appear to bo i-laccd in 
probably two, possibly three, vertical rows, eacli cell extending obliquely inwai'd and upward 
towards a general lateral and partly central cavity into which they discharge, and whicli is usu- 
ally well filled with irregularly squarish or roundish antherozoids. I have been unable to make 
out to my own satisfaction whether all the smaller cells of the aniheridium arc spermatic, and 
what their exact disposition is. The figures given (Sand G) represent only in a general way the 
relations of the cells to the cavity for the reception of antherozoids ; the view in the one case 
being sectional in a plane which does not show the openings through which the antheridial cells 
'/' 
(fig. C) 
produced in very krge liiimbers, and no 
form that I have seen is so well adapted to illustrate their discharge, which almost invariably 
occurs when the specimen is placed in water. This is perhaps connected with the fact (hat the 
trichogyne is very rudimentary, consisting of a small vesicular prominence, ^vith one or two 
short projections, and is not in close proximity to the antheridium, so that the prodticlion of a 
lai-ge number of male bodies is necessary to Insure fertilization. The carpogenic cell is very 
large, and the trichophoric cell bears the trichogyne laterally and anteriorly, the latter subtended 
by a peculiar and well-marked prominence. This prominence, at the left in tig. 4, constitutes 
the basal portion of the trichogyne, the receptive portion of which is seen in the angle between 
it and the projecting apex of the trichophoric cell. The latter is separated from the base 
of the trichogyne by a septum which was accidentally omitted from the figure. The cavity of 
this basal portion, which becomes indurated and persists as a slight projection on the mature 
perithccium (fig. 2), is not, as represented, continuous with that of the trie 
ascogenic cells are two in number, and the asci do not seem strictly biseriate. 
The 
Camptomyces melanopus Thaxter. Plate YI, figs. 1-6. 
I'roc. Am. Acad. Arts aud Sci. Vol. XXIX, p. 101. 
Perithecium tinged with brownish, slightly inflated towards the base, its distal half narrow, 
tapering gradually to the rounded attenuated apex, below which on one side is a rounded pro- 
jection ; borne on a large sub-triangular stalk-cell, surmounted by three smaller basal cells. 
Receptacle narrowly funnel-shaped, tapering to a pointed base, and consisting of a large basal 
cell, slightly translucent near its lower extremity, but otherwise becoming wholly opaque, 
followed by a flattened sub-basal cell, from which the mature perithecium with its stalk project 
nearly at right angles to the long axis of the receptacle, while distally it bears the appendage. 
Appendage consisting of a single squarish cell, followed by a flattened cell which bears terminally 
the sub-conical, slightly asymmetrical antheridium. Spores about 30x3.5//. Perithecium, 
130-150x30-33^. Total length to tip of antheridium, 110-125 /t. Greatest width, 25 /x. 
Antheridium, 25 X 16 ^. 
On Sunius proUxus Er., Waverly, Mass., and York, Maine. On *S', longiusculus Maun., 
Kittery Point, Maine. 
