CILIATE PROTOZOA (INFUSORIA) 



299 



216 (217) Tentacle one, consisting of a single, movable anterior process. 

 Parasitic on Cyclops. . . ... Rhyncheta Zenker. 



217 (216) Tentacles numerous. 



218 



218 (219) Body spherical, never fixed; knobbed tentacles arising from all 



sides Sphaerophrya Claparede and Lachmann. 



Representative species. . . Sphaerophrya magna Maupas 1881. 



Tentacles not exceeding fifty in number: when fully extended, 

 equal in length to the diameter of the body. Reproduction has 

 been observed to take place by transverse division. Diameter 

 of body 40 11. Fresh water. 



Fig. 556. Sphaerophrya magna. X 500. (After Conn.) 



219 (218) Body irregular; knobbed tentacles arising from the lobes of the 



margin of the body. Attached by the broad, lower surface. 



Trichophrya Claparede and Lachmann. 



Representative species. . Trichophrya sinuosa Stokes i886. 



Body i3attened with lobed margins. Usually not more than five 

 clusters of tentacles. Nucleus branched. Contractile vacuoles 

 numerous. Length 55 /i. Attached to aquatic plants. 



Fig. 557. Trichophrya sinuosa. X 125. (After Stokes.) 



220 (211) With a lorica 221 



221 (224) Lorica sessile 222 



222 (223) Usually cup-shaped or subspherical; tentacles suctorial, sometimes 



in groups. . . Solenophrya Claparede and Lachmann. 

 Representative species Solenophrya pera Stokes 1885. 



Lorica irregularly cubical or satchel-shaped, hyaline, widest at the base 

 of attachment, narrowing anteriorly, witli the sides somewhat concave. 

 Zooid oval, not attached to bottom of lorica. Tentacles arising from the 

 entire frontal border. Two individuals often in the same lorica. Height 

 of lorica 40 /x. Width and length nearly the same as height. Attached to 

 aquatic plants in standing water. 



Fig. 558. Solenophrya pera. X 225. (After Stokes.) 



223 (222) Posterior end of the body prolonged into a projection. Attached 



to Epistylis. Two to five long, simple tentacles. 



Urnula Claparede and Lachmann. 



