Ciliophora 389 



Fig. 7. 33. A-C. Transverse sections of Spirostoniuni anibiguum Ehrbg. 

 through anterior and middle regions of the peristome and near the level of 

 the cytostome, x510 (after Wetzel). D. Stent or Relict Villeneuve-Brachon, 

 showing macronuclear chain, membranelles, somatic ciliary pattern; x375 

 (after V-B.). E. Fabrea salina Henneguv; bases of membranelles, peristomial 

 striations, somatic ciliary pattern; xl25 (after Villeneuve-Brachon). F. Gni- 

 beria calkinsi Beltran, 200-800/i long (after B.). G. Blepharisina hyalinum 

 Perty, x510 (after Wang and Nie). H. Protocrucia tiizeti Villeneuve-Brachon, 

 xl320 (after V-B.). I. Blepharisma lateritium (Ehrbg.) Kahl, x3I0 (after 

 K.). J. Stentor auriculatus (Gruber) Kahl, x200 (after Bullington. K. Clima- 

 costomum virens (Ehrbg.) Kahl, specimen 200fj. long, with a broad peristome 

 (after K.). L. Parablepharisma bacteriophora Villeneuve-Brachon, x300 (after 

 V-B.). M. Spirostomiim teres Claparede and Lachmann, showing membra- 

 nelles and somatic ciliary pattern; x250 (after Villeneuve-Brachon). 



