109 
NOTE ON “GRITHIDIA” GLETI N. SR, PARASITIC IN 
THE ALIMENTARY CANAL OF CLETUS VARIES, BALL. 
By EDWARD KINDLE, Ph.D., 
Beit Memorial Research Fellow, 
AND R. C. LEWIS, M.A. (Cape), 
1851 Exhibition Scholar. 
{From the Quick Laboratory, Gamh7'idge.) 
(With 17 Text-figures.) 
Whilst examining the contents of a number of insects from the 
neighboiTrhood of Pretoria (Transvaal), a flagellate was found occurring 
in the alimentary canal of a Hemipterous insect, Gletus varius DalP. 
Unfortunately, no observations were made on the living parasite and 
the following notes on its morphology are only derived from the 
study of ordinary dried smears, fixed in alcohol and stained with 
Giemsa. In consequence of the method of preparation, the finer 
nuclear details have been destroyed, but nevertheless we have been able 
to make out the main points in the structure of this parasite, and as no 
further material is available we have decided to publish our results 
in their present form. 
Adopting Patton’s (1907) terminology for the stages in its life-cycle 
the parasites will be described under the heading of pre-flagellate, 
flagellate or post-flagellate forms. 
Pre-flagellate forms. Only two examples have been found which 
seem to represent this stage of the life-cycle. They are represented in 
Figs. 13 and 14 respectively. The former consists of a rather irregular 
ovoid body 7 p, in length and 3'5 /r in breadth. The tropho-nucleus is 
1 We are indebted to Mr Distant of the British Museum (Natural History) for the 
identification of this insect. 
