110 



Heterophrys myriopoda (Arch.). 

 PI. XVII, fig. 4. 



Specific characters. — Outer region colourless, granular, 

 comparatively rigid and unchangeable, passing off at the 

 margin into a frhige-like border of innumerable linear hyaline 

 processes — inner region forming a large, globular, hyaline, 

 definitely bounded sarcode mass, enclosing numerous large 

 chlorophyll-granules, ivith a few colourless ones, and giving off 

 not very numerous, comparatively thick, slightly tapering, 

 long, granuliferous , non-coalescing pseudopodia. 



I believe I have seen a central stellate arrangement of lines 

 similar to that described in Acanthocystis tmfacea by 

 Grenacher and Greef, but its examination deserves to be re- 

 peated before entering upon a description of this part of the 

 structure. 



Measurements. — Diameter of the total rhizopod (leaving 

 the pseudopodia out of view, that is, from extremities of mar- 

 ginal processes) about 2-^" — of the inner sharply defined 

 globe ■^\-^" to -^V'- 



Localities. — Found as yet in but one or two spots in Co. 

 Wicklow, near Carrig Mountain, and in a boggy spot at 

 lower end of Lough Dan (in the grounds of '^ Lake Park"), 

 both very restrictedly ; hence this form must as yet be con- 

 sidered very rare. 



Affinities and Differences. — Distinguished at once from 

 the preceding by its larger size, constantly possessing a 

 copious quantity of chlorophyll-granules, its longer, stouter 

 pseudopodia, and the innumerable linear acute processes 

 bordering the outer sarcode region. The colourless outer 

 region without spicula would at first glance distinguish this 

 form from an example of RaphidiopJirys viridis, which might 

 possess but a single central globular sarcode body. The 

 absence of the vertical spines at once readily distinguishes 

 it from Acanthocystis tmfacea. The curious resemblance of 

 the remarkable marginal, slender, acute processes given off 

 from the outer region to those represented by Greef in a new (?) 

 Acanthocystis form ^ has been already drawn attention to. 



Genus, Cystophrys (Arch.). 

 PL XVII, figs. 1, 2, 3. 



Generic characters. — Wiizopod changeable in figure, sar- 

 code mass of but one character, and containing immersed 



' Loc. cit., t. xxvii, fig. IS. 



