OrRAMCEBA VOKAX. 85 



as long as the ordinary length of the animal, about 

 the middle often with a slight groove-like constriction, 

 or narrowing, their thin ends terminating abruptly. 

 Nine out of ten specimens in his gathering exhibited 

 these appendages. 



Professor Lankester (loc. cit.) abolishes Leidy 's 

 specific name, and unites this organism with Amoeba 

 rillosa, under the title of Otiramwba villosa. In his 

 Amwbci nob His (which may be a form of Ouramoeba 

 Leidy) Penard mentions the occurrence of similar 

 caudal filaments, which he regards as parasitic (' Fauna 

 Rhiz. du Bass, du Leman/ p. 66). 



Leidy describes another form allied to 0. rorn.i; 

 namely 0. botidicauda , much smaller than 0. rorax, 

 " colourless, transparent, with an irregularly-angular 

 outline." The caudal appendages in this case consist 

 of from two to nine " acutely-divergent, segmented 

 filaments of variable length." 



Family 2. RETICULOSA. 



Naked protoplasts belonging in part to the homo- 

 geneous and assumed non-nucleated Monera of Haeckel. 

 Body sub-spherical or elongated; the pseudopodia 

 branching out into exceedingly slender filaments, which 

 anastomose, and form, in some species, a widely-spread 

 net-work. 



SYNOPSIS OF THE GENERA. 



Body colourless, sub-spherical or oval, changing but 

 slightly in contour ; the pseudopodal filaments few 

 and widely extending. 7. Oymnophrys. 



Body during active movement much elongated, 

 forming filamentous branching and anastomosing 

 pseudopodia at various points, but mainly at the ex- 

 tremities. 8. 1'iwinif.rtl. 



