JEnchelia.'] infusorial animalcules. 501 



Body not ciliatocl. Locomotion is perfomicd by means of the neck, 

 the distensible body, and the oral cilia. The proboscis-like lip is 

 very short, sometimes distinctly articulated, and projects but little 

 beyond the oral orifice. The polygastric structure can be demon- 

 strated by employing coloured food, and its discharge at the end re- 

 cognized in one species ; in another, green (ova) granules are present. 



The genus Lacnjmaria of Dujardin, agrees mainly with that of 

 Ehrenberg, but is ranged with the ' Parameciens.' The French 

 author differs entirely from Ehrenberg, in the statement that the 

 Lacrymaria are distinctly ciliated on their surface, that the cilia arc 

 disposed in regular series among the reticulations of the integument ; 

 and he also affiiTns that the mouth is not visible, but only presumed 

 from the appearance and ai'rangement of the larger cilia near the 

 extremity of the neck ; and he mentions the variability of their form, 

 as remarked by Baker, and other old observers ; whence the appella- 

 tion Proteus, originally given them. 



The Lacrymaria, of Dujardin, are distributed by Ehrenberg among 

 the Lacryma/ria, the Phialina, and in the genus Trachelocerca. 



LaCrymaeia joro^ews [Trichoda proteus, M.) — Body oblong, turgid, 

 ■ndth delicate transverse folds. The neck is capable of considerable ex- 

 tension (see engraving P. 6, f. 274, 275 ; in the former it is extended, 

 in the latter contracted.) It resembles Trachelocerca olor, but its 

 posterior extremity is rounded, and has at its centre the discharging 

 orifice. Eeproductive organs unknown. Found amongst Lemna. 

 Size stretched out, 1-1 40th. 



L. gutta. — Has a smooth and nearly spherical body, with a very 

 long neck. Found with Conferva. Size 1-1 150th; including neck, 

 l-210th. 



L. rugosa. — The body of this animalcule is nearly globular, and 

 wrinkled ; the neck is of a medium length, and the ova green. In 

 swimming it often revolves on its longitudinal axis ; neither cilia nor 

 an enlargement is observable near the mouth. Size l-570thj in- 

 cluding neck, l-288th. 



The additional species given by Dujardin are : — Lacrymaria versa- 

 tilis {Trichoda versatilis, ^.) — Fusiform; neck retractile; ciliated 

 beneath its extremity; neck shorter than in L. pruteus ; and, unlike 

 it, pointed posteriorly, and lives in sea- water. 



