Ciliophora 413 



Fig. 7. 49. A. Spirochona patella Swarczewsky, x248 (after S.). B. Stylo- 

 chona coionata Kent, about 60/^ long (after K.). C, D. A stage in conjugation, 

 and the formation of two buds in Spiroclio7ja elegans, schematic (after 

 Swarczewsky). E. Heliochona sessilis Plate, about 60/i long (from Kahl, after 

 Wallengren). F. Keiitrochona nebaliae Rompel, a loricate type about 40^^ 

 long; pharynx and macronucleus shown in outline (from Kahl, after R.). G. 

 Trichochona lecythoides Mohr, x83 (after M.). H. Spirochona elegans Swar- 

 czewsky, x248 (after S.). I, J. Chilodochona quennerstedti Wallengren: stalked 

 form (I), showing basal granules of peristome and the macronucleus, x750; 

 migratory larva (J), showing cytostome, ventral ciliature which will become 

 the peristomial cilia of the adidt, and the postero-lateral scopula-like organ 

 which will secrete a stalk during metamorphosis; x875 (after Guilcher). 



CLASS 2. SUCTOREA 



The form of the body, in different species, may be approximately 

 spherical, conical, club-shaped, cylindrical, vermiform, or irregularly 

 branching. The most obvious features of the group are the presence of 



