ous in the other two. We have found a single example of 

 a trypanosome belonging to the same species in one out of 

 four specimens of A. reinhardtii, caught in Prospect 

 Reservoir, near Sydney, in April, 1910. Recently (Septem- 

 ber, 1910) we have received from Dr. Bancroft, films from 

 another eel, A. mauribana, Bennett, from the Burnett 

 River, Queensland, in which the same species of parasite 

 has been met with. 



All the specimens examined reseni bled each other closely. 

 The body was long and narrow, gradually attenuated 

 towards each end. The trophonucleus was seen as a faintly 

 staining structure (using Giemsa) lying in front of the 

 middle of the body, while the deeply staining kinetonucleus 

 was close to the posterior end. The protoplasm stained a 

 deep blue, but appeared to be devoid of granules. The 

 undulating membrane was very distinct but narrow, being 

 about as broad as the body, and was thrown into numerous 

 more or less regular folds. The short flagellum was scarcely 

 recognisable. 



The following are the measurements of the parasite : — 

 total length including flagellum about 38/j, (from 35'5» t Q 

 40/x); flagellum 3*7 to 7/* ; distance from posterior end to 

 kinetonucleus 1'5/x; from latter to nucleus 16 to 28/*; maxi- 

 mum breadth is 

 of undulating membrane, 1*2 to 1*6/'. 



This species differs from T. fjntmilosum, Lav. & Mesnii., 

 of the European eel AnnuiUa vulgaris in the absence of the 

 large distinctive granules. We propose for it the name 

 T. anguiUicola. 

 Trypanosoma Bancroft 

 Fresh-water Catfish, 

 (Figs. 7-17). 



To Dr. T. L. Bancroft of Queensland we are indebted for 

 the privilege of examining and describing this new species 



