Kolpodea.'] infusokial animalcules. 5 SI) 



turgid posteriorly ; attenuated and elongated anteriorly, like a 

 sword. Found amongst Lemna. Size l-120tli to l-9Gth. 



Amphileptus (J) papillosus. — Body depressed, lanceolate, fringed 

 with papillae ; tail and proboscis smooth. Found amongst Conferva. 

 Size 1-GOOth to l-430th. 



Genus Uroleptus. — The train Animalcules have a tail, but 

 neither eye, tongue-like process, nor proboscis. Locomotion is 

 effected by cilia, which in three species are disposed in rows. The 

 polygastric apparatiis has been demonstrated by coloured food in 

 two species, and the mouth in all of them, but a discharging orifice 

 has not been satisfactorily determined. Green coloured ova granules 

 are evident in two species, but no male organs. 



This genus of Ehrenberg, says M. Dujardin, judging from the 

 figures of most of its species, should be in part united with Oxytricha„ 

 Thus Uroleptus piscis seems identical with Oxytricha caudata (Duj.) ; 

 \J. musculus (Ehr.) is, in figure, an Oxytricha, whilst V. (?) lamella 

 is probably a Trachelius, and U. filum is rather allied to Spirostoinum 

 amhiyuum. 



Thus if Dujardin's views be correct, Uroleptus should be erased 

 from the list of genera. 



U. piscis {Trichoda piscis, M.) — Body like an elongated top; 

 gradually attenuated posteriorly, forming a thick tail ; ova greenish. 

 Body covered with cilia, those at the mouth largest. Found, in 

 February and March, amongst the floccose brown coat upon 

 dead sedge leaves, along with Chlamidomonas and Cryptomonas. 

 Hampstead ponds. Size l-288th to l-44th. 



U. musculus {Trichoda musculus, M.) — Body white, cylindrical, 

 pear-shaped, thickened posteriorly, where it abruptly terminates 

 in a tail, (fig. 333, P. 7.) The movement is rolling. It is inactive 

 and rigid. Found with Oscillatoria. Size l-220th. 



U. hospes. — Body greenish, ovato- oblong, and turbinate in shape; 

 obliquely truncated and excavated anteriorly; posteriorly terminated 

 by a styliform, acute tail. Found in the cells of frog and snail 

 spawn. Size l-240th. 



U. (?) lamella. — Body transparent, linear-lanceolate, depressed, 

 flat, very thin. Found in infusions. Size 1 -220th. 



U. Jilum (Enchelys caudata, M.) — Body white, filiform, cyliu 



