ON THE STRUCTURE OE HYDR/VCTINIA ECHINATA. 97 



Bibliography. 



1. Fleming, J. — " Alcyonium ecbinatum," 'British Animals,' 1828. 



2. Johnston, G. — " Alcyonidium echinatum," ' Britisli Zoophytes,' 



p. 304, pi. xlii, figs. .3, 4, 1838. 



S.Johnston, G. — "Coryne squamosa, var.," 'British Zoophytes,* 

 pi. ii, figs. 4, 5, 1838. 



4. Van Beneden, P. J. — " Hydractinia, sp.,"'Bull. de I'Acad. Roy. de 



Bruxelles,' torn, viii, 1841. 



5. Hassall, A. H. — "Echinochorium clavigerum," 'Ann. Nat. Hist.,' 



vol. vii, p. 371, pi. X, fig. 5, 1841. 



6. Philippi, A. — "Dysmorphosa conchicola," 'Wiegman's Archiv,' 



1842. 



7. De Quatrefages, A. — " Synhydra Parasites," ' Ann. des Sci. Nat.,' 



vol. XX, p. 230, pis. 8, 9, 1843. 



8. Van Beneden, P. J. — "Hydractinia lactea and Hydractinia 



rosea," ' Rech. sur I'Embryogenie des Tubulaires, Mem de I'Acad. 

 E,oy. de Brux.,' torn, xviii, p. 104, pi. ix. 



9. Johnston, G. — "H. echinata," 'Brit. Zooph.,' p. 34, pi. 1, figs, 4, 5, 



1847. 



10. Strethill- Wright, T.— "Hydractinia echinata," 'Ediab. New 



Phil. Journ.,' April, 1857. 



11. Van Beneden, P. J. — "H. echinata," ' Recherches sur la Faune 



littorale de Belg.,' p. 134, pi. xl, figs. 1—8, 1866. 



12. HiNCKS, T.— "H. echinata," ' Brit. Hydr. Zooph.,' p. 23, pi. iv. '^^ 



13. Allman, G. J. — " H. echinata," ' Gymnoblastic Hydroids,' pp. 220, 



342, pis. XV and xvi, figs. 10, 11, 1871. 



14. Allman, G. J. — 'Report on the Hydroida collected by H.M.S. 'Chal- 



lenger,' p. ix, 1888. 



15. Weismann, a. — ' Enstehung der Sexualzellen bei den Hydromedusen,' 



Jena, 1883. 



16. Greenwood, M. — "Digestion in Hydra," 'Journal of Physiology,' vol. 



ix, 1888. 



17. Bunting, M. — " Origin of Sex-cells in Hydractinia," ' Journ. Morph.,' 



ix, 1894. 



VOL. 40, PART 1. NEW SEE. d 



