28 
ON SOME MORE PROTOZOAN PARASITES 
FROM TRICHOPTERA. 
By DORIS L. MACKINNON, B.Sc. 
{Assistant in Zoology^ University College, Dundee.') 
(Plate III and 8 Text-Figures.) 
Introduction. 
In a recent paper {Journal of Parasitology, 1910, ill. pp. 245—54) 
I described a new trichomonad {Trickomastix trichopteroruniY and a 
spirochaete from the hind-gut of certain trichopterous larvae. I also 
mentioned the occurrence along with these parasites of another peculiar 
flagellate, which, at the time, I was disposed to consider as closely 
related to Macrostoma caulleryi, Alexeieff. 
The present paper deals chiefly with this flagellate, which seems to 
be an entirely new form, and for which, after more careful study, I am 
reluctantly obliged to erect a new genus, Embadomonas. 
It is extremely interesting to find that the caddis-fly larvae also 
sometimes harbour the flagellate, Grithidia campamdata, Leger, and 
a microsporidian which I regard as Gurley a legeri, Hesse. The first 
of these has previously been recorded from the larvae of Chironomus 
(Leger, 1902) and Ptychoptera (Leger and Duboscq, 1909), and the 
second from Ephemerella (Hesse, 1903), all of which are insect larvae 
living alongside caddis-worms, and probably feeding very similarly. 
The likelihood of mutual infection with common parasites is, in such 
cases, very great. I thus feel strengthened in the view, expressed in 
my last paper, that the spirochaete of trichopterids is identical with 
those found in Chironomus (Leger, 1902) and in Ptychoptera contaminata 
1 Through an oversight I gave the specific name of this trichomonad as “trichoptcrae,” 
I take this opportunity of correcting it to “ trichopterorum.” 
