Tracheiina.] THE INFUSORIA. 293 



within its reach ; Jig. 288 is a specimen undergoing trans- 

 verse self-division ; and Jig. 2H9 a young one. Found in 

 exposed infusions, and amongst conferva. Size 1 -280th 

 to 1-1 20th. 



465. Trachelius vorax. The voracious Trachclius 

 has a clavate ovate body, turgid white colour, and thick 

 obtuse proboscis, shorter than half the body; the mouth is 

 situated near the middle of the body, and not at the base 

 of the proboscis. Found amongst conferva. Size 1 -120th. 



466. Tr AcnEL.ius meleagris. The pearl Trachelius has 

 a compressed lanceolate body, often curved in the form of 

 the letter S, with a thick obtuse proboscis, shorter than 

 half the body ; it has along the back a series of vesicles, 

 like a string of pearls. Size l-96th to l-72nd. 



467. Trachelius lamella [Kolpoda hunella, M.) The 

 Jiat Trachelius has a depressed laminated body, of a linear 



lanceolate shape, often truncated anteriorly, and rounded 

 at the end. Size 1 -900th to 1 -280th. 



468. Trachelius auaticula. The little goose-like 

 Trachelius. — Body white, small, ovate, pyriform, attenuated 

 and diaphanous anteriorly. Found amongst conferva. 

 Size l-570th to l-280th. 



469. Trachelius (?) tricophorus {Vibrio strictus, M.) 

 The whip-shaped Trachelius has a cylindrical changeable 

 body, often clavate ; the proboscis capitate, and in the 

 form of a very delicate whip. Size l-1200th to l-430th. 



470. Trachelius (?) globulijer. The spherical Tra- 

 chelius has a spherical hyaline body, Mith a very delicate 

 whip-like acute proboscis. Found amongst conferva. 

 Size 1 -200th. 



471. Trachelius oi;?///<. The egg-shaped Trachelius. — 



