J 
374 MONOGRAPH OF THE LABOULBENIACE^. 
pressure of the spore mass, and there are indications that they are absorbed even before this 
pressure is exerted. 
The procarpe, as we hare seen, is identical with that of other genera, and the fnrther 
development of the carpogenic cell, although it has not been traced out in detail, seems to corre- 
sr)ond in all respects to that which has been previously described. In species in which it has 
been possible to determine the number of ascogenic cells with definiteness, four have been seen 
in every case ; but a certain irregularity in the position of the asci in relation to them is often 
observable, the ordinary bi seriate arrangement being at least obscured. 
Tlie young individuals of species of this genus bear a close resemblance to those of Zodio- 
myces, and the slender acicular spores, as in the last named genus, arc septate nearer to (he base 
than to the apex except in G. terrestris. A further peculiarity of the spores is observable in C. 
furcatus and C. conto7ius, m both of which the septum that divides the spore involves its gela- 
tinous envelope also, which is prominently constricted in this region (Plate XXV, figs. 4 
and 10). 
Tlie trichogyne is always filamentous, usually not very long, and sinij)le or sparingly 
branched. The antherozoids are clearly differentiated only in C rosti-atiis (Plate XXIY, figs. 21 
and 24) and C. terrestris (Plate XXV, fig. 23), in both of which they arc long, rod-shaped 
bodies that fall from their attachment soon after they are formed. In other species ihcy api^oar 
to result from the segmentation of slender branches into rod-like pieces like those of the two 
forms mentioned. It is difficult to obtain trichogynes in a receptive condition, and in only a 
single instance have I found one to which three or four of the long antherozoids w^rc firmly 
attached. 
The species are in a way divisible into sub-groups corresponding to the genera of the hosts 
which they inhabit. The three species on Berosus as well as the four on Tropistcrnus have a 
distinct family resemblance in either case; while 0. rostratus is a]mr)st sufliciently distinct to be 
placed in a genus by itself; its chief peculiarity being connrded with the j)roduction of adven- 
titious branches from about the base of tbe appcndnge and pcrithccium, and the definite and 
successive production of its antherozoids. It may be mentioned that it is approached in both 
these respects by tbe singular little terrestrial form C. terrestris. ^Vhat the near afTinities of 
. this peculiar and comparatively imperfectly known genus are, it is difficult to sny, although its 
exogenous antherozoids and the form of its young conditions indicate a nearer relationship with 
Zodiomyces than with any other known forms. 
taphylinid 
(llydrophilidse) 
Ceratomyces mirabilis Thaxter. Plate XXIV, figs. 1-10. 
Proc. Am. Acad. Arts and Scl. Yol. XXYII, p. .34 ; 1. c. Vol. XXX, p. 4S0. 
At first pale, becoming more or less deeply suffused with amber-brown. Pcritliccium si might 
externally, more or less inflated internally, the cell-rows composed of from twenty to thirty cells, 
he anterior row ending below the apex in an appendage often equalling the perithecium in 
long h and tapering to a blunt point, or when broken sometimes producing a fow slender termi- 
from 
