54 GLASS I. 
Enchelys Muruu. (exclusive of several species’), Acomia 
Dusarp., Gastrocheta ejusd., Alyscum ejusd., Uronoma ejusd. 
Bursaria MUELL. (in part), DusARD. (Bursaria and Spirostomum 
EHRENB. in part.) Body everywhere ciliated, often dilated pos- 
teriorly ; mouth oblique surrounded by cilia arranged spirally. 
Sp. Bursaria truncatella Muxnt.u., Infus. Tab, Xvit. figs. 1—4; EHRENB. 
Infusionsth. Tab. XXXIV. fig. 5. 
To this division EHRENBERG refers the Opalina Ranarum of PURKINJE and 
VALENTIN, first discovered and figured by LEEUWENHOECK: Ontledingen 
en Ontdekkingen 1685, p. 13, fig. 3, A. Dusarpin and von SIEBOLD [and 
Srein.] do not admit the presence of a mouth in this species, the first two 
retain the genus Opalina. [STEIN. suspects the Opalina to be larve of 
worms. The different species have very different structure. Die Infu- 
sionsth. s. 182—187. | . 
Ophryoglena KHRENB. Body rough with cilia disposed in lon- 
gitudinal rows, ovate, with eye-point black or red. 
See Fig. in EnrenB. Tab. Xt. figs. 6-8. 
Spirostomum EHRENB. in part, DuJARD. 
- Glaucoma ENRENB. Body everywhere ciliated, mouth un- 
armed, with a tremulous valve like a longitudinal lip. 
Sp. Glaucoma scintillans EHRENB., Infusionsth. Tab. XXXVI. fig. V., DUJARD. 
Infus. Tab. VI. fig. 13. 
Chilodon Eurens. Body oval, with a lateral sinus forwards, 
cilia all over disposed in longitudinal rows, mouth inclosing a cylin- 
drical fasciculus of little rods (teeth). 
Sp. Chilodon cucullulus, Kolpoda cucullulus Murtt., Enrens. Infusionsth. 
Tab. XxXvi. fig. vi., Dugsarv. Jnfus. Tab. vi. fig. vi. [Ste1n. Infusionsth. 
Tab. 11. 51. ] 
Nassula EHRENB. 
Lacrymaria EGRENB. (and Trachelocerca ejusd.) 
Sp. Lacrymaria olor EHRENB., Vibrio olor MUELL., Infus. Tab. x. figs. 12-15, 
EnRens. Jnfusionsth. Tab. XXXVII. fig. VII. 
Colpoda EHRENB. (Species from the genus Colpoda MUELL.) 
Body laterally emarginate or sinuous, reniform, with cilia disposed 
in rows, mouth lateral unarmed. 
Sp. Colpoda cucullus MuELL., Infus. Tab. x1v. figs. 7-14, EnRENB. Tab. 
XXXIX, figs. v. &e. 
Paramecium MUELL. (exclusive of species), EHRENB. (in part), 
DusArD. 
1 Nothing can be more capricious than the use by modern writers of this generic 
name of MUELLER. See Duvarpin, Hist. nat. des Infus. pp. 385, 386. 
