MOXOGRAni OF THE LABOULBK\IACE.E. 247 
r 
matter that I am wliolly unable to explain. It is certainly not connected in any way 
with matters of nutrition, and although it may be in part explained a? resulting from 
the fact that the spores are transferred while the sexes arc in coita, and the points of in- 
fection are determined by definitely recurring motions of the legs or otherwise, this docs 
not seem sufficient to explain the constancy of the phenomenon. Peyritsch (1S70), 
calls attention to the fact that Sligmatomjccs Bacri invariably occurs on the under 
surface of the male and on the upper surface of the female host. Such a fict, if it 
were true, would readily be explained in this way. My own observation.'^', however, 
do not agree with those of Peyritsch in this respect, though this relative position may 
perhaps be the more common. 
That certain types of form are associated with certain typos of hosts seems to be 
a fact illustrated in a limited number of instances, — a well-marked case being nfTonled 
by the species of Laboulbenia which are found on Clivina and its near allies, and 
those which occur on Galerita nnd related forms. The species of Laboull)enia which 
beetles also f 
Parasites of Lahoidh 
y large amount of material I 
been struck by the general absence of parasites attacking these fungi. A very 
small number of such parasites do, however, occur, the most striking of which belong 
to two forms of an apparently new geniis of the Chytridineos, which grow externally 
on species of Ceratomyces, possessing well-developed fdaments and large append icu- 
The only other parasite which seems at all peculiar to the ordei 
erhaps a yeast, that often completely envelopes the append 
especially of species of Laboulbenia, assuming a eh 
The 
n 
ay into the interior of the peri theci urn, fill 
and destroying its contents. 
Parasites associated with the Laboulbeniacoa3, and, like them, attached to living 
sets, are more or less abundant ; and while the majority are animal in nature (bell 
nalcules, rotifers, etc.), there is one genus of fungi (?), unknown to me, which, 
quite colorless, resembles some of the more simpl 
It 
d sometimes by accident to specimens of the Laboulbeniaccic) 
by a slightly blackened base, and consists of 
superposed cells, the 
of which produces a small number of apparently non-motile spores cndogcuously, that 
escape through a terminal opening. 
The ffcnus described as Devoca,^ which is evidently not in any way " related to 
» Lockwood, S. Fungi affecting fislies. Jour. N. Y. Microscop. Soc. Vol. TI., p. 67 (1S90). 
