Mr. H. J. Carter on the Oryamziuion of Infusoria. 243 



EXPLANATION OF PLATES V., VL, VIL 



Plate V. 



Fig. \. Amoebous cell under spherical distension, about to become plani- 

 forra, from the brackish water in the marshes of the island of 

 Bombay; l-400th of an inch in diameter : (a) pellicula and dia- 

 phane ; {h) sarcode and granules \ (c) space unoccupied by sar- 

 code ; {d) nucleus in its capsule. 



Vig. 2. Section of ditto through the nucleus, showing the same parts 

 marked with the same letters : (c) nucleus ; {d) central cavity now 

 distended by water. 



Fig. 3. Amceba quadrilineata, H. J. C. (n. sp. ?), under reptation : («) dia- 

 phane; (6) moleculse of sarcode; (c)vesicula; (c?) nucleus and 

 capsule ; (e) digestive globule containing a fragment of Oscil- 

 latoria. 



Fig. 4. Amceba RoeseliiC?), Duj. : (a) "granules;" (b) vesicula; (c) nu- 

 cleus. 



Fig. 5. Amoeba Gleichenii (?), Duj, : (a) discoid ovules of different sizes, 

 the largest 1 -2800th of an inch in diameter ; (b) one more mag- 

 nified showing the capsule ; (c) " granules ;" {d) portions of 

 food; (e) capsule of nucleus empty; (/) vesicula. Animal 

 about 1 -400th of an inch in diameter when spherical. 



Figs. 6-8. Ditto, becoming capsuled. 6. First stage, all extraneous matter 

 thrown off, peduncle formed, but pellicula still admitting of (b) 



(iOffmh expansions; (a) ovules and granules. 7- Capsule too much 

 hardened to admit of expansions of the diaphane. 8. Capsule 

 formed, rough, yellow, about 1 -300th of an inch in long diameter. 



Fig. 9. Euglena {viridis, mihi), Ehr., encapsuled, capsule rough, of a yel- 

 lowish-brown colour : {a) red-body next the peduncle. 



Figs. 10-16, Amceba radiosa (?), Duj., showing nucleus in different stages 

 of " granulation." 10. (a) nucleus enlarged, granular. 11. Nu- 

 cleus still more enlarged, (12) presenting first sulcus of dupli- 

 cative (?) subdivision. 13. Same process ending in the production 

 of a mass of spherical, delicate, transparent, granuliferous cells. 



14. Parent nearly effete with only two of the spherical cells re- 

 maining, the granules of which have become large, free, separated 

 from each other and endowed with rapid locomotive power. 



15. One of these cells more magnified. 16. Plane or actino- 

 phorous form of ditto previous to hardening of the pellicula and 

 development of the granules. 



Fig. 17. Ditto in conjunction. 



Fig. 18. Ditto, another pair, just after separation. ' 



Fig. 19. Actinophorous form of a species of Palmellea (?), Kg., like 

 Glceocapsa granosa. Kg., but with cells, separate and solitary. 



Fig. 20. Nucleus of -4wice6a under "granulation," presenting the second 

 sulcus of duplicative subdivision. 



Figs. 21-23. Different forms of botryoidal granuliferous cell-development 

 of the nucleus in Amoibce. 



Fig. 24. Amoeba Roeselii (?), Duj., presenting a nucleus undergoing botry- 

 oidal development : (a) mammilliform projection of vesicula pre- 

 paratory to discharging its contents. 



Fig. 25. Euglypha alveolata, Duj. : [a) sarcode, granules, and moleculoe; 

 {b) nucleus and capsule (the former very seldom visible except in 



IG* 



