Amnphnetl.] INFrSORTAL ANIMALCUmS. 203 



obtuse, others digitate, and others also pointed or jagged. Size 

 1- 130th. Large vacuolte were noticed about the middle of the body 

 looking like large globules. 



Amcebjl marina, (D.) Ameeba, filled with granules at the centre, 

 and differing from the A. dtffiuens only in its dimensions and habit, 

 i. e., the sea. Length 1 -260th. 



A. Gleichenii, (D.) — Changing from a round globular to a very 

 long oval figure, and dividing into two or three lobes at one ex- 

 tremity ; it often exhibits vacuolse, and nearly opaque nebular bodies 

 at the centre Length 3-2600th to 7-2600th. 



A. muUiloha, (D.) — This may be but a variation of A. Gleichenii, 

 but deserves pointing out as much from the circumstances of its 

 appearance as from its form. Length 1-1 300th. It seems softer 

 than other species, and moves actively, emitting from its border in 

 various directions ten or twelve rounded lobes, assuming thus a most 

 irregular figure. It was found in an infusion of meal which had 

 been kept nearly two months. 



A. Umax, (D.) — Body diaphanous, rounded at each end but slightly 

 lobed, gliding along in a nearly straight line, containing very distinct 

 granules, and a very clearly marked vacuola. Was found in the 

 water of the Seine, kept for eight months. It may be but a more 

 advanced degree of development of the preceding, or of the follow- 

 ing species, its greater transparency, however, and its semi-fluid 

 consistence, seem sufficiently distinctive. Length 1 -260th to 1 -800th. 



A. guttula. (D.) — Diaphanous, orbicular or oval, gliding in a 

 straight course, and containing very distinct granules. This is one 

 of the most common species, but may easily escape notice on account 

 of its great transparency, the simplicity of its form, and the slow- 

 ness of its movements. Found in river or marsh water, kept for some 

 time, and containing plants. Length 1 -520th to 1 -890th. 



A. lacerata, (D.) — Body symmetrical, rugose, plaited, and granular, 

 rather diaphanous, with broad expansions, as though membranous at 

 the base, and terminated by several tapering torn points ; one or 

 more evident vacuolte. Length l-2800th to l-890th. In pond 

 water. 



A. hrachiata, (D.) — Body globular; semi-transparent, porous and 

 tubercular, with four to six very thin, long, and cylindrical expan- 



p 2 



