of England and India. SB 



assumed to be the same species, with the tentacula in a capitate 

 form and of various lengths, the capitate portion not being so 

 distinct in b and c, where these tentacula are but just put forth 

 beyond the body. But that it incepts crude food, I should have 

 considered it an Acineta. I have not seen this Rhizopod in 

 England. 



It is right, however, to add that the same form, and under- 

 going the changes above mentioned, once occurred in company 

 with that peculiar cyst oi Acineta which is surrounded by trans- 

 verse circular ridges, out of one of which cysts I have (jo, m) 

 figured, doubtfully, its exit. But, be this as it may, the specimens 

 contained no crude food, and were more or less densely charged 

 with the granules so characteristic of Acineta. Can it be that 

 this Rhizopod, after all, is an Acineta which both lives on suc- 

 tion through the capitate bulbous tentacula and on crude food, 

 like Actinophrys, as the occasion may require ? 



Actinophrys Eichhornii, Ehr. PI. II. fig. 21. 



Of this Rhizopod I only met with two specimens in the island 

 of Bombay, of the size given, in eight years, in diiferent locali- 

 tities and at a long interval of time, both in fresh water. The 

 first had no pseudopodia, but presented the vesicula in plurality 

 and in the forms given in the figure (/, /), as well as the cell (g) 

 supposed to be the nucleus. Both specimens contained much 

 crude food, and the last specimen seen was more or less scattered 

 over with actiniform tentacula. In each instance, the body 

 was filled with a parenchyma consisting of vacuoles suspended in 

 granular sarcode. The vacuoles appeared to be spherical in their 

 primary form (c), and each contained granules in active motion, 

 while the granular sarcode alone was projected into the form of 

 tentacula, which bore with them a covering of the plastic invest- 

 ing membrane, as represented in the drawing (a, a). The vesi- 

 culse made their appearance between the surface of the paren- 

 chyma and the investing membrane, and, bursting through the 

 latter, were followed by protrusion of the parenchyma, as shown 

 at e. Each specimen was about -^ih of an inch in diameter; 

 and that figured is drawn upon the same scale as most of the 

 other delineations, viz. ^th to -Enroth part of an inch. 



Fig. 23 (whose body was only ^v^th of an inch in diameter, 

 but contained vacuoles similar to those of A. Eichhornii, was in 

 the same basin with and was probably only a small specimen of 

 it) presented on different parts of its actiniform tentacula little 

 globules, apparently of the substance of which the investing 

 membrane is composed. In the same basin was also an Actino- 

 phrys in which all the tentacula radiated from one point of the 

 body {Plagiophrys spharica, Clap, et Lachm, p. 454 ?), and also 



3* 



