36 
Protozoa in Trichoptera 
Of these, the first occurs in the hypodermis of DapJmia macdma, and is 
described as having “ oval ” spores. Unfortunately, measurements were 
not taken*. (?./mncoifef, found in the cells of the intestinal epithelium 
of Ptychoptera contaminata, is a good species with very characteristic 
crescent-shaped spores. 
I see at present no reason for separating the Ourleya of trichoptera 
from Gurleya Ugeri, found in a similar position in Ephemerella 
contaminata, and agreeing with it in all essential points. I regard this 
as still another instance of the infection by common parasites, to which 
similar animals on the same feeding-grounds are subject. 
From what I have already shown, I think it is clear that tricho- 
pterous larvae offer an unusually rich field to the seeker after protist 
parasites. The following is a list of the parasites hitherto mentioned 
or described by various authors: with the probable exception of Ourleya 
Ugeri, they do not seem to be harmful to the host“. 
Class Bacteria. 
Bacillus sp.* 
Streptothrix sp.* 
Class Proflagellata, Doflein. 
Spirochaeta sp.* 
Class Flagellata. 
Crithidia campanulata, Leger*. 
Embadomonas agilis, nov. gen. et nov. sp.* 
Trichomastix trichopterorum, Mackinnon*. 
Class Rhizopoda. 
Entamoeba sp.* 
Class Sporozoa. 
Sub-Class Telosporidia. 
Ancyrophora uncinata, Leger*. 
Asterophora elegans, Leger. 
* It would appear to be difficult to distinguish G. tetraspora from G. Ugeri on morpho¬ 
logical grounds. 
- Those marked with an asterisk have been recorded by me. 
3 It is interesting to notice that Leger also found this gregarine in the intestine of the 
aquatic larvae of Dytiscus sp. and Colynibetes sp. 
