484 WILLIAM NICOLL. 
in Tocotrema. This fact removes an important point of 
distinction between the genera Cryptocotyle and Toco- 
trema, but sufficient differences remain to keep them 
generically separate. 
In my previous note on Looss’s sub-family Ccoeno- 
gonimine (Heterophyine), I arrived at practically the 
same conclusion as Jiigerskidld did in a paper! which I had 
not at that time seen. Jigerskidld separates the sub-family 
Tocotremine from the Coenogonimine, including in the 
former the same genera, with the exception of Crypto- 
cotyle, as I did later. He also ventures the supposition 
that the Microphalline are more or less nearly related to 
the Tocotremine-Ccenogonimine group, and this seems 
not at all unreasonable. Their relation to the Brachy- 
cceliine is undoubtedly much more remote, and my sugges- 
tion of a natural family to include all these forms was certainly 
premature if not erroneous. 
Sub-family Gymnophalline Odhn., 1904. 
Genus Gymnophallus Odhn., 1900. 
Gymnophallus dapsilis Mihi (PI. 10, fig. 24). 
An explanation of the curious condition of the ova in this 
species is suggested in a note by Looss,? who has met with an 
analogous condition in several other species, and ascribes it 
to an imperfect functioning of the ootype. he malformed 
ova may therefore in a sense be regarded as abortive. I 
have since noted the condition in one or two other species, 
but only in isolated individuals, and never with the same 
remarkable frequency as in Gymnophalius dapsilis. 
Sub-family Maritremine provis. 
Genus Maritrema Mihi, 1907. 
I have at present nothing further to add to the descriptions 
'“Scaphanocephalus expansus (Crepl.), ete.,” in ‘ Results of 
Swedish Zool. Exped. to Egypt,’ 1901, No. 23. 
> “Trematoden sus Seeschildkréten,” in ‘Zool. Jahrb. Syst.,’ xvi,p. 475. 
