3 66 DISCOVERY REPORTS 



ii. The jelly-polyps, the ' Gallertpolypoide ' of Chun, found on the branches of the gonodendra, 

 are vestigial nectophores. In the early stages of their development there is no sign of a ' Glockenkern '. 



12. The basal ampullae of the tentacles are homologous with the basigasters of gastrozooids of 

 other siphonophores. Their walls are filled with nematoblasts. 



13. The gonodendra and tentacles are more complex and so probably more highly evolved than in 

 other cystonects. Their growth-stages and the structure of their asexual nectophores and jelly-polyps 

 were studied. Early egg-cells were located in bands in the ectoderm of female gonophores. Photo- 

 micrographs of early growth-stages of the gonophores are given. 



14. A brief review of the literature, including the pharmacology of stinging is given. 



15. A list is given of points upon which further information about the living animal is desired. 



REFERENCES 



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Agassiz, A. and Mayer, A. G., 1902. Reports Sci. Res. Albatross. III. Medusae. Mem. Mus. Comp. Zool. Harv. vol. xxvi, 



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 Agassiz, L., 1862. The genus Physalia and our Physalia arethusa. Contr. Nat. Hist. U.S.A., Boston, vol. iv, p. 335. 



Allman, G. J., 1876. On the structure and development 0/ Myriothela. Phil. Trans. R. Soc. vol. clxv, p. 549. 



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