E U CI LI A TA , HOLO TRICHIDA 



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Family 1 Nicollellidae Chatton 



Genus Nicollella Chatton and Perard. Body elongate ovoid. 

 The thickened cortex on the anterior half of the oral surface. 



Nicollella ctenodactyli Chatton and Perard (Fig. 148, a). 

 In the caecum and large intestine of Ctenodactylus gundi of 

 Tunisia. 



Genus Collinella Chatton and Perard. Body form similar 

 to Nicollella, but the thickened cortex reaches the posterior end 

 on the oral surface. 



Fig. 148 a. Nicollella ctenodactyli. X125 (After Chatton and Perard). 



b. Holophrya discolor. X250 (After Butschli). 



c. Balanitozoon agile. X400 (After Stokes). 



d. Urotricha } areata. X3S0 (After Lieberkiihn from Butschli). 



e. Coleps hirttis. 



f. C. elongatus. 



g. C. bicuspis. 



h. C. octospinus. All four X400 (After Noland). 

 i. Plagiopogon coleps. X 125 (After Perty). 

 j. Metacystis tnincata. X200 (After Cohn). 



Collinella gundii Chatton and Perard. In the caecum and 

 large intestine of Ctenodactylus gundi. 



Genus Pycnothrix Schubotz. Elongated body with thick- 

 ened cortex on both oral and aboral surfaces. 



