354 CRESSWELL SHEAKEll. 



3. Calkins, G. N. — "Mitosis in Notiluca niiliaris and its Bearing 



on the Nuclear Relations of the Protozoa and Metazoa," ' Journ. 

 of Morph.; vol. XV, 1899, p. 711. 



4. Claparede, E. — " Observations sur les Rotateurs," ' Annals de Sci. 



Nat. Zool.; V ser., t. viii, 1867, p. 5. 



5. Eisiii^, H.— " Die Entwicklungsgeschichte der Capitelliden," 'Mitt. 



a. d. Zool. Stat. Neapel,' Bd. xiii, 1898, p. 1. 



6. Flemming, "W. — ' Zell substance Keni, und Zellteilung,' Leipzig, 



1882. 



7. " Zur Mechanik der Zelltheilung," ' Arch. f. Mik. Anat.,' vol. 



xlvi, 1895. p. 696. 



8. Foettinger. A. — " Recherches sur Torganisation de Histriobdella 



liomari," 'Arch, de Biol.,' vol. v, 1884, p. 435. 



8. Foot. K., and Strobell, E. C. — " Prophases and Metaphase of the 

 First Maturation Spindle of AUoloboi^hora foetida,'' 'Anier. 

 Journ. Anat.,' vol. iv, 1905, p. 199. 



10. Gardiner, E. G. — "The Growth of the Ovum, Formation of the 



Polar Bodies, and the Fertilisation inPolychoerus caudatus," 

 ' Journ. of Morph..' vol. xv, 1898, p. 73. 



11. GriflBn, B. B. — "Studies on the Maturation, Fertilisation, and 



Cleavage of Thalassema and Zirphtea," ' Joum. of Morph.,' 

 vol. XV, 1899, p. 583. 



12. Harmer, S. F. — "Notes on the Anatomy of Dinophilus," ' Journ. 



of Marine Biol. Assoc.,' N.S., vol. i, 1889, p. 1. 



13. Has well, William A. — " On a New Histriobdellid," ' Quart. Journ. 



Mier. Sci.,' vol. 43, 19UU, p. 299. 



14. Heidenhain, M. — " Neue Untersuchungen iiber die Centralkoi-per 



und ihre Beziehungen zum Keni und Zellenprotoplasma," 

 'Arch. f. Mik. Anat.,' Bd. xliii, 1894, p. 423. 



15. Hempelmann, F. — ^" Zur Morphologie von Polygordius lac tens 



Schn. und P. triestinus," ' Zeit. f. wiss. Zool.,' vol. Ixxxiv, 

 1906, p. 527. 



16. Hermann, F. — " Beitriig zur Lehre von der Entstehung der karyo- 



kinetischen Spindel," 'Arch. f. Mik. Anat.," Bd. xxxvii, 1891, p. 

 569. 



17. Ishikawa, C. — "Studies on Reproductive Elements: II, Notiluca 



miliaris." ' Joiiru. Coll. Sci. Imp. Univ. Japan,' vol. vi, 1894 

 p. 297. 



18. Korschelt, E. — " Ueber Kernteilung, Eireif ung und Befruehtung bei 



Opbryotrocha puerilis," ' Zeit. Wiss. Zool..' Bd. Ix, 1895, 

 p. 543. 



