Dobell, Some Remarks upon the „Autogamy" of Bodo laccrtae (Grassi). 55 J 



nuclei" lie grouped together and in course of absorption. Nor 

 were the last stages of all wanting — the uninucleate, thick walled, 

 yellowish cysts (o), which sometimes had the appearance of enclosing 

 a single monad (ij). 



The appearances thus seemed in perfect harmony with Pro- 

 wazek's discoveries. The striking resemblance between the „auto- 

 gamy cysts" of Bodo and those just described can easily be seen 

 by anyone who will take the trouble to compare my figures with 

 those of Prowazek. One slight difference will at first be apparent 

 — namely, as regards the actual cyst itself. For although Pro- 



Fig. 2. 



Fig. 4: 



'& ■^' 



Fig. 3. 



wazek constantly refers to the cysts as such, in no case (save 

 the very last stages) does he figure a cyst-wall. 



A further remarkable resemblance is to be seen in the way in 

 which the cysts are nearly always to be found in little clusters 

 (see text-fig. '2). Most commonly they occur in groups of 4, 8, 12 

 or 16, though often also in groups of 6 as shown in Prowazek's 

 Fig. 67, PL III, which bears a really remarkable likeness to many 

 of the cysts I encountered. My cysts were almost always united 

 by a granular conneclive substance, as in Fig. 2, where we see 4 

 cysts — each containing apparently a „somatic nucleus" and a mass 

 of „chromidia". 



In not a few cases I found darkly staining strands lying m 

 the cyst (see text-fig. 3). These I imagined to be the degenerating 



