102 



surrounding definitely bounded body, as if by an outer wall, 

 of Figs. 26-28, are in dimensions considerably larger than 

 the yellow granules with their surrounding cell-like structures 

 of Fig. 29 — or, as I would in other Avords be disposed to 

 express it, the individuals of Diplophrys are notably larger 

 in size than the contained cell-like structures of Cystophrys 

 oculea — therefore, supposing the latter to be only a group 

 of the former bound by some common matrix into a colony, 

 the individuals of Diplophrys must in some way have suffered 

 a great dwindling down in size in the process. In fact the 

 average diameter of the body in Diplophrys may be taken at 

 "3"oVo of ^^1 inch, whilst the average diameter of the contained 

 cell-like structures in Cystophrys oculea x)i?iy he i^Ven at -5-0V0 

 of an inch. 



Again, the view that Diplophrys sjDrings from a develop- 

 ment of the yellow bodies oi Acanthocystis spinifera seems to be 

 controverted by the fact, quantum valeat, that the latter species 

 has not been ever found in this country. Further, as I have 

 mentioned in a previous part of this paper, the cell-like 

 structures in C. oculea are invested by a common matrix of 

 sarcode, from the rather definitely bounded surface of which 

 emanate the pseudopodia ; and this enclosing sarcode body 

 has the power to tear itself in two, new pseudopodia emanat- 

 ing from the just disjoined surfaces — that is to say, they are 

 in the sarcode contained, not themselves the active sarcode- 

 containing bodies. Of course I am going on the assumption 

 that Greef's figure 29 actually does represent my C oculea, 

 which I can hardly doubt ; nor can the yellow colour of the 

 central bodies in this figure, as opposed to the red colour in 

 mine, much militate against this view, for the tint expressed 

 to the eye seems to me to depend a good deal on the focussing 

 and on the illumination. But it may be premature to judge 

 of Greef's opinions on the forms as figured by him as he 

 promises to return to them in the next forth-coming 

 section of his memoir. For my own humble share, in the 

 meantime, I cannot but think it impossible that Diplo- 

 phrys can be a phase of the yellow bodies of Acantho- 

 cystis spinifera at all, whilst I should have as little doubt 

 that it can be either any preceding or subsequent state of 

 Fig. 29, here supposed by me to be one and the same 

 thing as C oculea. I am myself a good deal puzzled 

 by the occurrence of the curious little organism drawn 

 attention to by me at one of our Cbib meetings,^ which 



* Proceedings of Dublin Microscopical Club, March, 1869, in ' Quarterly 

 Journal of Miscroscopical Science,' vol. ix, N. S., pp. 323-4. 



