210 SYDNEY J. HICKSON. 



BIBLIOGRAPHY. 



1. F. M. Balfour. — ' Comparative Embryology,' 1880. 



2. R. BoHM. — "Helgolander Leptomeclusae," 'Jen. Zeits.,' xii. 1878. 



3. W. K. Brooks. — " The Life E istory of the Hydromedusse : " a discussion 



of the origin of Meduste and the significance of Metagenesis, 'Mem. 

 Bost. Soc. Nat. Hist.,' vol. iii. No. 12, 1886. 



4. Glaus. — " Qeber Halistemma tergestinum," &c., ' Arbeiten des Zool. 



Instit. zu Wien,' torn. i. 1878. 



5. G. Glaus. — "Znr Beiu-theilung des Organismus der Siphonophoren 



nnd deren phylogenetischer Ableitung," ' Arbeiten Zool. Instit. zu 

 Wien,' viii. Heft 2, p. 159; translated in the 'Annals and Magazine 

 of Natural History,' vi. 21, pp. 185—198. 



6. S. J. HiCKSON. — "The Sexual Gells and the Early Stages in the 



Development of Millepora plicata," 'Phil. Trans.,' vol. clxxix. 

 1888, B., pp. 193—204. 



7. S. J. HiCKSON. — "On the Maturation of the Ovum and the Early 



Stages in the Development of AUopora," 'Quart. Journ. Micr. Sci.,' 

 vol. xsix. p. 579. 



8. W. H. Jackson. — 'Rolleston's Forms of Animal Life,' 2nd edition, 



1888. 



9. E. Ray Lankester.— Article "Hydrozoa," 'Encyclopaedia Britann.,' 



9th edition. 



10. H. N. MosELEY. — "Report on Gertain Hydroid, Alcyonarian, and 



Madreporarian Corals," '"Challenger" Reports,' vol. ii. 1881. 



11. J. J. QuELCH. — "On the Presence of Ampullae in Millepora mur- 



rayi," 'Nature,' vol. xxx. 1884, p. 539; and in '"Challenger" 

 Reports,' vol. xvi. "Reef Corals." 



12. A. Weismann.— ' Die Entstehung der Sexualzellen bei den Hydro- 



medusen,' Jena, 1883. 



