Ciliophora 363 



Fig. 7. 18. A. Frontonia lencas Ehrenberg, specimen 300/i long, showing 

 oral region, anterior striated band, contractile vacuole, nuclei; ciliary pattern 

 shown schematically at anterior and posterior ends; trichocysts indicated 

 along one margin (after Kahl). B. Homalogastra setosa Kahl, about SOytt long 

 (after K.). C. Balanoyiema dubium (Penard) Kahl, about 50/^ long (after K.). 

 D. Platynematum hyalinuni Kahl, specimen 60;n long (after K.). E. Cohni- 

 leiubus (Letnbus) punctatus Kahl, 70-120;u, (after K.). F. Saprophilus putrinus 

 Kahl, specimen iO/jL long (after K.). G. Contractile vacuole and accessory 

 canals in Urocentrum turbo; silver impregnation; x250 (after Gelei). H. 

 Uronema pluricaudatum Noland, left lateral view, xll90 (after N.). I. 

 Cryptochilidium echini (Maupas), ventral view, x460 (after Powers). J. 

 Lembadion bullinum Perty, ventral view; large membrane at left of oral 

 groove; so-called "gullet-fibrils," just beneath the wall of the oral groove, are 

 not shown; specimen IbOfi long (after Kahl). K. Colpidium colpoda (Ehrbg.) 

 Stein, specimen 150/i long (after Kahl). L. Anophrys salmicida Mugard, 

 showing oral ciliature and somatic pattern; x830 approx. (after M.). 



