56 CLASS I. 



Sp. Aspidlsca lynceus, Trichoda lynceus MUELL., Infus. Tab. xxxn. figs, i, a, 

 EHRENB. Infusionsth. Tab. xxxix. fig. i. 



Loxodes DUJARD., not EHRENB. [young individuals of Chilodon 

 cucullulm with imperfectly developed infundibulum. STEIN. Infus. 

 p. 131.] 



Ervilia DujARD. (Species from the genus Euplotes EHRENB.) 

 Trochilia DUJARD. 



Family XIII. Vorticellina ( Vorticellina and Ophrydina EHRENB.) 

 Body campanulate or infundibuliform, with large vibratile cilia at 

 the margin of the aperture. Mouth and anus approximate, situated 

 in a pit of the margin. 



Formerly these animals were classed amongst the Polyps as Bell- 

 Polyps, Bastard-Polyps, &c. (See the first Dutch edition of this 

 Handbook, i. p. 66.) It was believed that the infundibular or bell- 

 shaped body is the csecal stomach, and the large opening the 

 mouth. The true oral aperture, however, is placed on the e dge of 

 the hollowed body. The food describes a circle in the parenchyme 

 (according to EHRENBERG in a special intestinal canal l with several 

 lateral dilatations) and is again ejected near the oral aperture (hence 

 the names cycloccela and anopisthia given by EHRENBERG). The 

 analogy with the molluscan type, even if an intestinal canal be not 

 admitted, cannot be overlooked, and probably these animals will be 

 ranked by future writers, as imperfect forms, with the Bryozoa. 



The cilia on the edge of the bell-shaped body cause in the water 

 an eddy which hurries onwards minute corpucles whether dead or 

 alive, and conveys them towards the cavity. If some early and 

 also later observers (amongst others even AGARDH, Nov. Act. Acad. 

 Ccesar. Leop. Carol. Natur. Curiosor. x. 1821, pp. 127 137, Tab. VIL 

 ii.) have seen in this a power of fascination, the fact must be ascribed 

 to the circumstance, that they did not notice the cilia. 



Phalanx I. Body not pedunculated. 



A. Naked. 



Stentor OKEN, EHRENB. (Species of Vorticella MUELL.) 

 Body conical, from its contractility polymorphous, everywhere 



1 See FOKKE'S observations on Stentor, which led him to doubt so early the exist- 

 ence of a special intestinal canal. OKEN'S Isis, 1836. s. 785, 786. 



