560 DESCEiPTiour OF {Tolygastrica. 



Teichoda (?) ^thiopica. — Body oblong, attenuated posteriorly; 

 under side flat; mouth large. Size l-600tli. 



T. Asiatica. — Body oval, oblong, cylindrical, rounded at both ends ; 

 moutb small. Size l-860tli. 



T. pyrum {Kolpoda pyrum, M.) — ^Body ovate, turgid, acute ante- 

 riorly. Found amongst Conferva and in infusion of celery. 

 Size l-1200th. 



In the system of Dujardin there is both a famil)'' Triclwdiem, and a 

 genus Trichoda. Speaking of the relations between them and the genns 

 Trichoda of Ehrenbcrg, he observes : " M. Ehrenberg has placed in 

 his family Enchelia, a genus Trichoda, which in part corresponds with 

 ours; and he has, besides, dispersed among Leucophrys, Encliehjs, 

 Traehelius, Loxodes, &e., many Infusoria which we have brought 

 together in this family (viz., Trichodiens), since we, unlike him, are 

 unable to see their digestive organs." 



The Trichodiens are soft, variable, flexible animalcules, ciliated, 

 and either with an evident mouth, or one indicated by a varying 

 arrangement of longer cilia. Dujardin would have it understood, that 

 this family is only provisional ; to comprise a tribe of animals in- 

 termediate in organization between the Enchyhns — the most simple of 

 ciliated — and the Kcronieni, which conduct to the liighest forms of 

 infusorial life, having dclined mouths, and an armature of styles, 

 hooks, &c. The genera included by Dujardin in this family — 

 Trichodiens, arc, Trichoda, Truchelius, Acineria, Pelccida, and DilcptuH ; 

 the two last having a higher grade of organization. 



Tkichoda (Duj.) — Body ovoid-oblong, or pjTiform, I'ather flexible 

 anteriorly, with a row of eiha du'ected backwards, and appearing to 

 indicate the pi'esence of a mouth. Thcii' sui'face does not appear 

 reticulated, or ciliated in rows, as it is in Acomia and Enchelys. The 

 T'richoda are chiefly found in Infusions and in stale marsh water. 



T. angulata. — Body oblong, obliquely and regularly plaited or 

 angular, often with one or more superflcial vacuolte. Size l-900th. 



T. Pyrum [Kolpoda Pyrum ? M.) — Probably Trichoda Carnimn. 



Genus Laceymaeia. The tear Animalcules. — Body ^dth a long 

 narrow neck, slightly enlarged near the termination, where the 

 ciliated and lateral (lipped) moutli, destitute of teeth, is situated 



