66 Tramactions. — Zoology. 



Length about y|^ inch = 139 jx. 



Welhugtou, Wainui, A. Brandon. 



This animalcule resembles //. simiJis, Quennerstedt, but 

 differs in the acuminate posterior extremity, and in the 

 freshwater habitat. 



Genus Stylonichia. 



Stylonichia mytiliis, Ehrenberg. Wellington, Wainui, Hutt 

 Valley. 



Genus Aspidisca. 



Aspidisca turrita, Claparede. Wellington. 



The European species only inhabits salt-water. There 

 appear to be no differences between it and our New Zealand 

 form, and the only point to be noted is the freshwater habitat. 



An animalcule observed, having a very short and blunt 

 dorsal spine, even in some instances without spine, is taken 

 to be only a variety of this species. 



Genus Glaucoma. 



Glaucoma scintillans, Ehrenberg. Hutt Valley. 



Genus Euplotes. 



Euplotes patella, Ehrenberg. Wellington, Wainui, Hutt 

 Valley, Mungaroa, Karori. 



Class 111. TENTACULIFEEA. 



Order. Tentaculifeka-Suctoria. 



Genus Sphserophrya. 



Spharophrya magna, Maupas. Wellington. 



This animalcule seems to agree entirely with Maupas' 

 species (which is reported only from Algeria), with the excep- 

 tion of its size, which reaches -^ inch = 56 /x as against -^^ 

 inch =41 fx in the African infusorian. All other characters 

 being similar, it is not thought desirable to consider it as even 

 a variety. 



Genus Acineta. 



Acineta elegans, sp. nov. Plate IV., fig. 11. 



Lorica vase-shaped, with distinctly reversed margin, which is 

 chiefly apparent at each side. Lorica widening somewhat below 

 the edge, and rapidly compressed beneath, though not at once 

 closing, but produced downwards to a point whence there is a 

 short pedicle. Length from the point to the orifice about twice 

 the width of the expanded margin. Animalcule nearly spherical, 

 only occupying the upper half of the cup ; tentacles forming 

 two antero-lateral groups with about fourteen in each group ; 

 tentacles distinctly capitate, rather longer than the diameter of 

 the animalcule. Contractile vesicle spherical, eccentric. Eudo- 

 plast indistinct. Parenchyma granular. 



