INFUSORIA. 55 



Amphileptus EHRENB. (Amphileptus and Loxophyllum DUJARD.) 



Sp. Amphileptus meleagris, Kolpoda meleagris MUELL., Infus. Tab. xiv. figs. 

 1-6, xv. figs. 1-5, EHRENB. Tab. xxxviu. fig. 4. 



Family XI. Oxytrichina. Body mostly plane or depressed, 

 armed with vibratile cilia and setae, and hooks or styles not vibra- 

 tile, not loricated. 



This family agrees with the genus Kerona of MUELLEE. Besides 

 the usual fine cilia, the animals have other organs for creeping and 

 for the support of the body in climbing, and which are distinguished 

 by EHRENBERG as bristles (setae), styles (styli) and hooks (uncini) ; 

 Infusionsth. s. 338. 



Genera : Kerona MUELL. in part, DUJAEJD. (Siylonychia and Kerona 

 EHRENB., Ceratidium ejusd.) Oxytricha BORY (Oxytricha and 

 Urostyla EHRENB.) ; Halteria DUJARD. 



Sp. Kerona mytilus (and Ker. haustellum) MUELL., Infus. Tab. xxxrv. figs. 

 1-4, EHKENB. Infusionsth. Tab. XLI. fig. ix., DUJARD. Infus. Tab. xm. 

 figs. 2, 3 ; very common in fresh water, size i to ~ line. If this form be 

 compared with monads, Vibrios and the animals of Volvox globator, it will 

 be seen that in respect of size there is as great a difference amongst Infu- 

 sories as amongst Mammalia. 



Family XII. Euplota (Euplota and Aspidiscina EHRENB.) Body 

 oval, depressed, loricated. Vibratile cilia around the mouth ; besides 

 cilia, often styles and hooks for motion. 



Euplotes EHRENB. (Phlasconia BORY, DUJARD.) Lorica oval or 

 suborbicular, longitudinally ribbed or striated; body with styles 

 and hooks. 



Sp. Euplotes patella, Kerona patella MUELL., Infus. Tab. XXXIIT. figs. 14-18, 

 EHKENB. Infusionsth. Tab. XLII. fig. ix., DUJAKD. Infus. Tab. vin. figs. 

 1-4. 



Chlamidodon EHRENB. Styles and hooks none. Slender rigid 

 rods arranged in a cylindrical fasciculus around the mouth (teeth). 



Sp. Chlamidodon mnemosyne EHRENB., Infusionsth. Tab. XLII. fig. vm ; in 

 the Baltic. 



DiopJirys DUJARD. 



Himantophorus EHRENB. 



Aspidisca EHRENB. Lorica produced beyond the body forwards, 

 hyaline ; longitudinal flexible setas on the ventral side, for stepping 

 and creeping. 



