NOTES ON A GREGARINE OF THE EARTHWORM. 433 
Fic. 7.—Nucleus in fresh teased preparation. x 300. 
Fic. 8.—Nucleus (crumpled), showing two vacuolated nucleoli. x 600. 
Fic. 9.—Nucleus with five nucleoli. x 700. 
Fic. 10.—Nucleus and nucleolus, showing staining substance in the 
vacuole. x 600. 
Fic. 11.—Nucleus at time of conjugation. x 450. 
Fic. 12.—Nuclear fragments among granules, previous to formation of 
sporoblastomeres. Zeiss, homog. immers., 2 mm., oc. 4. 
Fic. 13 a.—Sporoblastomeres, fresh, showing coat. x 450. 
Fie. 13 4.—Sporoblastomeres, showing division of nucleus and granules 
embedded. From a permanent preparation in which the coats are not seen. 
x 450. 
Fic. 14.—Sporoblasts. x 720. 
Fic. 15.—Spores in cyst, showing arrangement (semi-diagrammatic). 
x about 100. 
Fic. 16.—Spores in section, showing development of falciform bodies by 
division of nucleus. x 400. 
Fies. 17 a, 6.—Falciform bodies in spore. Sections of spores, showing 
only half the number. Crouch, homog. immers. ;4,, 0c.2. x 800. 
Fic. 18.—Portion of growth of cells surrounding the cysts. x 100. 
Fic. 19.—Spores of two sizes. x 1000. 
Fic. 20.—Doubtful stage, ? sporoblastomeres of small spores. x 700. 
Fie. 21.—Conjugation of Monocystis agilis, showing mutual attraction 
of nuclei. x 420. 
Fic. 22.—Conjugation of Monocystis magna. x 16. 
