EDMONDSON — PROTOZOA OF IOWA. 1 17 



ACINETA sp. 



Lorica somewhat spherical, produced posteriorly into a stalk 

 which exceeds in length the diameter of the body. Body in close 

 contact with the inner surface of the lorica. Four groups of cap- 

 itate tentacles. Nucleus spherical, central. Contractile vesicle 

 single. 



Height of the lorica, 120 microns. (Fig. 215, PI. XXX.) 

 Found in fresh water in Johnson county. Each fascicle of ten- 

 tacles arises from a base which is apparently an outpushing of the 

 body through an opening in the lorica. 



HALIvEZIA Sand. 



Sand founded this genus chiefly upon the following characters: 

 No lorica or .stalk, sessile. Tentacles confined to the anterior end. 



Hallezia buckei S. K. 



" Body elongate, slender, sub-cylindrical, bearing two antero- 

 lateral fascicles of distinctly capitate tentacles; not po.ssessing a 

 distinct pedicle, but affixed basally by a simple contracted suck- 

 ing di.sc; contractile vesicle anteriorly located; endoplasm sub- 

 central. 



" Dimensions unrecorded. Habitat, fresh water." 

 The above description is from Kent's "Manual of the Infu- 

 soria," p. 822. 



PoDOPHRYA compressa Nutting. 



" Body illoricate, quadrate, wider anteriorly; length from two 

 to five times the greatest width; compressed, about three times 

 as wide as thick; the antero-lateral corners occupied by rounded 

 prominences each bearing a fascicle of many suctorial tentacles 

 which, when fully extended, are more than half the length of 

 the body and spiral or spirally marked when retracted; posterior 

 portion of the body rapidly narrowing to meet the very short, 

 thick pedicle, which is furnished with a sucking disk at its distal 

 end; parenchyma den.sely and evenly granular; contractile vesicle 

 single, anterior; endoplast oval. 



"Length of body, 1-277" to 1-140". Habitat, fresh water." 

 This description is taken from The American Naturalist; Vol. 

 XXII, p. 13. 



