198 W. ARCHER. 



nothing here requiring a new genus distinct from Plagio- 

 phrys. Possibly, too, the same would apply to the follow- 

 ing : 



Cldamidoplirys stercorea, Cienkowski^ (fig. 3). 



Except that in the form so named as a new genus and 

 species the body-mass is not in close apposition to the test 

 (possibly of more importance than might at first sight appear), 

 this comes also close to Plagiophrys. It was found in a curious 

 habitat, that is, amongst fungals on dung.^ The author con- 

 siders it to be identical with the Difflugia ewcAe/ys (Schneider). 

 The body-mass and the pseudopodia seem to be " Eugly- 

 phan," so to say, that is, presenting a posterior homoge- 

 neous region with nucleolated nucleus (sometimes two, or 

 even more, nuclei), an equatorial granular zone, and an 

 anterior vacuole-bearing region, in which, for the most 

 part, digestion is carried on ; but it possesses a hyaline struc- 

 tureless, ovoid, or sub-reniform test, with a short, terminal, or 

 somewhat lateral node, and the body presents a rather thick 

 pseudopodial stem. The pseudopodia are numerous, though 

 but slightly branched, and are non-granuliferous (fig. 3). 



Cienkowski found several individuals clustered together in 

 conjugation, which he interprets, however, as the expression 

 of the result of an act of division. The example pushes 

 through the opening of the test a protoplasmic expansion, in 

 which at first no nucleus is noticeable, but in which it sub- 

 sequently becomes developed — according to the author, inde- 

 pendently of the mother-nucleus. When a test becomes 

 formed, which at first appears closely applied to the body, the 

 individual thus newly produced may part from the "mother- 

 animal," but, as in Microgromia ; with copious nutriment, this 

 form in the same way produces clustered colonies, the open- 

 ings of the tests directed to the common central point of 

 union. 



During his "culture" the author often found individuals 

 with two or three or more nuclei. Their origin seemed to be 

 independent of the original nucleus (though called by the 

 author " Mutterkern"), at least he never saw any division of 

 it. But the significance of this fact remained unknown to 

 him. 



This form further undergoes a resting-state. The whole 

 body-mass makes its exit from the test, which, after assuming 



» Loc. cit., p. 39, t. vii and viii, f. 73-89. 



2 Tlie words in Cicnkowski's memoir (p. 39) wliicli run "dor 



meist bewobuendea Pilzc " should surely be " dcr luist-bewoLueu- 



den Pilze." 



