PLATE XXII. 



NEBELA COLLAEIS. 500 diameters. 



From sphagnum of the sphaguous and cedar swamps of New Jersey. 



Fig. 1. Broader lateral view of a living individual in the normal position, with pseudopods 

 extended. Shell composed mostly of nearly uniform oval plates. 



Figs. 2-4. Three views of the same individual: — 2. broader lateral view, with interior sarcode 

 and extended pseudopods ; 3, outline of narrower lateral view ; 4, outline of transverse section with 

 view of the mouth. Shell composed of regular circular disks. 



Figs. 5, 6. Two views of the same : — 5, narrower side ; 6, broader side, containing a number 

 of unequally round and oval granular, clay-colored balls. Shell composed of larger oval plates, with 

 intervening minute round and narrow rectangular plates. 



Fig. 7. Individual with sarcode encysted, and throat of the shell closed by a thick laminar oper- 

 culum, apparently composed of materials discharged from the sarcode. Shell composed chiefly of large 

 oval plates, with smaller round ones and a few narrow rectangular ones. 



Fig. 8. Individual with the yellowish sarcode contracted into a ball and about to pass into the 

 encysted condition ; with the food materials still retained. Shell composed of comparatively small 

 round disks, largest in the neck, and mingled with a few spongilla spicules. 



Fig. 9. Empty shell, reversed position, composed mostly of large oval plates. 



Fig. 10. Individual with small sarcode forming a central ball. Shell composed of larger oval 

 plates at the fundus, with scattered ones of the same kind in the throat, and the wide intervals occupied 

 by small round plates. 



Figs. 11, 12. Two lateral views of small empty shells, accompanying the former specimen ; in one 

 with mostly oval plates ; in the other with circular plates. 



Fig. 13. Broader lateral view of an empty shell, composed of linear plates mingled with a few 

 scattered round and oval ones. 



Fig. 14. Broader lateral view of an empty shell, composed at the fundus mainly of large oval 

 plates, and in the lower two-thirds of small round and oval plates, with scattered linear plates. 



Fig. 15. Empty shell, in outline, composed mainly of oval plates, decreasing in size towards the 

 mouth, aud mingled with smaller circular and a few rectangular plates. 



Fig. 16. Small shell, composed of comparatively very large oval plates, min gled with minute 

 round ones. 



Fig. 17. Empty shell, composed of circular plates, split at the fundus, showing that the fissure 

 follows the intervals of the plates. 



Fig. 18. Shell, of narrow rectangular and oval plates, from which a broad strip was broken away, 

 showing that the fracture follows the intervals of the plates. 



Fig. 19. Fragment of the same shell more highly magnified. 850 diameters. 



Fig. 20. Similar fragment, in outline, from a different focus. 



