292 Mr. H. J. Carter on Fresh- and Salt-water Rhizopoda, 



vacuoles uniformly small; b, ditto with large; c, ditto with 

 both small and large, and the tentacles on this bearing drops of 

 sarcode. India, fresh water (?). 

 Fig. 5. The same (?) ^As the foregoing, but with the tentacles bearing 

 little spherical bulbs of sarcode at their ends as well as drops 

 along their course, the interior containing Diatoms. India, 

 fresh water. 

 Fiff. 6. A. Eichhornii, Ehr. Fragment of an individual, -sVth of an inch 

 in diameter, magnified upon the same scale as the foregoing : 

 a a a a, peripheral or ectosarcal layer of vacuoles, the larger 

 ones ^'nrth of an inch in diameter ; bbbb, dotted lines indicating 

 respectively the circumference of the figure and the width of the 

 ectosarcal layer; cccc, vacuolation of the endosarc, in which 

 the interstices are much smaller than those of the ectosarc ; 

 dddd, spherical bodies or reproductive cells, about -^-oWth of an 

 inch in diameter, as they appear in the intervals between the 

 vacuoles of the endosarc ; e, more magnified view, showing that 

 these bodies are, in their advanced stage, respectively enclosed 

 within a transparent spherical cell or capsule, and that the former 

 presents a group of granules in the centre of its plasmic contents ; 

 (here we seem to have the first elements of an Actinophrys, viz. 

 an ectosarc, endosarc, and " granules/' which, in one specimen 

 that I observed, still nearer approached it by the transparent 

 cell presenting a fine protoplasm without granules, and a vacuole); 

 /, the same before the formation of the cell ; g, three of the 

 same, of difi^erent sizes, before the granules appear ; h, two of the 

 same (on the scale of those seen in the "fragment") enclosed in 

 one cell ; i i, tentacles covered with ectosarc ; k k, axial portion 

 extended from the endosarc ; I, vibratile granules of the cells. 

 England, fresh water. 

 Fig. 7. The same ; specimen of individuals j^o^th of an inch in diameter 

 accompanying the larger ones just mentioned, but in which 

 neither nucleus nor reproductive bodies were observed. England, 

 fresh water. . 

 Fig. 8. Actinophrys ? specimen ^r^^^t^ of an inch in diameter; ecto- 

 sarc surrounded by a wrinkled surface, as in A. oculata, and 

 dififerentiated from the granular and more clouded endosarc by a 

 more translucent and finer material ; endosarc presenting a well- 

 defined nucleus. Found with the foregoing, in fresh water. 

 Fig. 9. Podophryajixa, Ehr. : a, parent half, ^-^th of an inch in diameter, 

 undergoing duplicative division, tentaculated, but without cilia ; 

 b, daughter half, elongated and becoming separate, presenting 

 vibratile cilia and a few short tentacles ; c, d, another instance, 

 in which the separated and elongated portion, c, with vibratile 

 cilia and a few short tentacles, has passed into the spherical 

 form, d, without vibratile cilia and with long tentacles ; e, conical 

 capsule of this variety, presenting fourteen costae. India, fresh 

 water. 

 Fig. 10. The same (?) ; a, parent half, yfrst of an inch in diameter ; 



b, daughter half nearly separated, presenting vibratile cilia, &c. ; 



c, stalked condition ; d, spherical capsule of this variety, pre- 

 senting eighteen costse; e, instance where the Podophrya has 

 nearly left its first capsule, and has formed another around itself 

 on the top of the original one. India, salt water. In almost all 

 those here figured, the contracting vesicle and the nucleus, which 

 appeared to be globular, were observed. 



