smith: infusoria of kansas. 173 



Length of large zooids, 150 microns. Length of small zooids, 50-60 

 microns. (Figs. 73 and 74, plate XLVIII. 



Genus vaginicola Lamark. 



Body elongated, cylindrical, similar in general structure to Vorticella 

 but enclosed in a transparent vase-like lorica. Zooids attached to the 

 base of the lorica either directly or by means of a short, thick stalk. 

 Lorica sessile usually. 



Vaginicola cry staUina (?) Ehr. 



Body considerably elongated, often containing chloryphyl-granules. 

 Ciliary disc elevated. Contractile vacuole single. Macronucleus usually 

 bandlike. Lorica nearly cylindrical, slightly narrowed anteriorly, 

 rounded posteriorly. Body when fully extended projecting one-third of 

 its length beyond the opening of the lorica. 



The form pictured agrees with this species in all but size. Average 

 length given for lorica, 119 microns. Length of type specimen, 55 

 microns. (Figs. 65 and 68, plate XLVI.) 



Subclass Suctoria. 



Infusoria which possess cilia during embryonic life only. Provided with 

 tentacles for sucking or piercing during adult life. 



Family Podophryid^. 



Body usually sphei'ical. Stalk present or wanting. Tentacles knobbed 

 or pointed. 



Genus Podophrya Ehr. 



Body spherical, oval, or elongated, usually attached to some object by a 

 rigid stalk. Suctorial tentacles knobbed, scattered promiscuously over the 

 body or united into compact clusters. 



Podophrya libera Perty. 



Body spherical. Tentacles knobbed, long, from three to four times the 

 diameter of the body, and scattered over the entire surface. Pedicle short 

 and slender, about the length of the diameter of the body. Individuals 

 often detached. 



This species was found unattached in pond water. It seems to exist in 

 this condition quite frequently, and it was originally described by Perty 

 as an unattached species. 



Diameter of type specimen, 45 microns. (Fig. 76, plate XLIX.) 



Podophrya quadripartita C. & L. 



Body elongated pyriform; anterior end forming four rounded lobes, 

 each bearing a compact cluster of knobbed tentacles. Pedicle slender, 

 somewhat dilated at its junction with the body. Macronucleus irregularly 

 oval, often almost angular. Contractile vacuoles more than one. 



Found in pond water, attached to Epistylis. One group was attached 

 to a bit of leaf. Internal embryos are formed, and Fig. 78 represents a 

 large individual with two such embryos. 



Lengths given range from 85 to 200 microns. Length of type specimens, 

 75 and 143 microns. (Figs. 77 and 78.) 



