RECENT MEMOIRS ON FRESHWATER RHIZOPODA. 75 



middle region of the body ssem to be removed, for now 

 the two nuclei can be met with at any part of the body. 



The '"' encapsuled " examples mostly appeared to possess 

 a shorter stipes than the naked, but the author did not 

 feel certain whether there was any real contraction or that 

 short-stalked forms were more prone to become encap. 

 suled. 



The connexion of the axial inner portion of the stipes 

 with tlie body, by means of the longitudinally running 

 parallel lines, is ever maintained ; these could be followed 

 sometimes, even up into the sarcode body-mass (fig. 27). 



Any further data as to a subsequent subdivision or other 

 mode of reproduction the author's opportunities did not 

 afford him. 



Whether this interesting form might possibly coincide 

 with Lecythia elegans (Strethill Wright)^ the author could 

 not determine. There is a considerable resemblance in the 

 stipes, and on the capitate figure of the pseudopodia on 

 becoming retracted ; but the figure of the body of that form 

 drawn out at its outer extremity does not agree, nor does 

 the statement that it is enclosed in " a closely-fitting enve- 

 lope." More closely related possibly to Zooteira religata 

 (Strethill Wright)^ would appear the present form; that 

 form, however, possesses a short mucous covering surround- 

 the basis of the stipes into which the whole animal can be 

 fully withdrawn, having a thick muscular band with lateral 

 processes in the stipes ; it possesses also a granular region, 

 designated by Wrigbt as ectosarc, surrounding the richly 

 granular but non-nucleated body (endosarc) , from which the 

 pseudopodia are said to proceed. 



Lithocolla globosa, Eilh. Schulze^ (PI. XXI, fig. 9, vol. 

 xvi, 1876). 



Whether the form called Lithocolla globosa by Eilhard 

 Schulze, and found by him in the washings of some sea- 

 weeds and mussel-shells from the Baltic, really belongs to 

 the Heliozoa or not, is, so far as the author's experience of 

 it reaches, still undetermined. Were it so it would probably 

 justify the formation of such group of which it would be 

 typical, characterised by the heliozoan inclosing itself around 

 by a more or less loosely apposed stratum of foreign are- 

 naceous and other foreign particles, comparable in a measure 

 to that of Difflugise, but not coherent into a " test." 



1 S. Wright, 'Ann. Nat. Hist.,' vol. viii, p. 123 (1S61). 



- S. Wright, 'Quart. Journ. Micros. Sci.,' vol. ii, p. 217 (ISGSV 



' Schultze's 'Archiv,' Bd. X, p. 3S9, t. xxvi, f. 8—10. 



