576 
^[AliOAKET ROBIXSOX. 
1S99 anti 1909. Siedlecki. M. — ‘‘Ueber die geschlechtliche Vermehiamg 
tier Monocystis ascidise (R. Lank.)," ‘Bull. Acad. Sci. 
Cracovie.’ xi and xii. 
1900. AVoodcock. H. M. — "The Life Cycle of "Cystobia" irregularis 
(Minch.), together with Observations on other Neogamous 
Gregai'ines." ‘ Quart. Joiirn. Micr. Sci..’ vol. 50. 
EXPLAXATION OF PLATE 29. 
Illnstratiiig ]\riss M. Rohiuson’s paper “On the Reproduction 
of Kalpidorhynchns arenieolte (Cnghtn.).” 
Fig. 1 . — The first nuclear spindle and the breaking up nucleus of the 
gainetocyte. X 1200. 
Fig. 2. — The first nuclear spindle. Anaphase. X 1050. 
Fig. 3. — The second and third nuclei. Metaphase. X 1050. 
Fig. 4. — (a) Spindle drawn out during late anaphase. (b) Two 
daughter-nuclei resulting from above. X 1200. 
Fig. 5. — Part of a cyst in section, showing nuclei in different states of 
division. X 1200. 
Fig. 5rt and 5b. — Two niiclei from same cyst as fig. 5. showing 
formation of the .spindle within the nuclear membrane. X 1200. 
Fig. 0. — Portion of cyst in section at the pearl stage. X 500. 
Fig. 7.— (d) Female gamete. X 1250. (b — </) Conjugation stages 
stained with Heidenhain. Licht-Griin and picric acid. X 1250. (b — m) 
Conjugation stages stained with Delafield’s liEematoxylin. X 1250. 
Fig. 8. — (a) Zygote soon after conjugation, (b) Zygote with nucleus 
extruding a vacuole. (c) Spore — one nucleus stage. (d) Spore with 
two nuclei. (e) Spore with four nuclei. (/) Spore with eight nuclei, 
(y) Spore with eight n\iclei. (b) Sjjoi’ozoite. X 2000. 
Fig. 9. — Young trophozoite without an epimerite. X 500. 
Fig. 10. — Nucleus of a ganietocyte showing multiplication of the 
karyosome. and division of a karyosome into chambers. X 2000. 
