< ' ASSTOPEA XAMACIIANA. 



2:;;] 



'84. Zur Metamorphose der Rhizostomen. Zool. Anz., Jahrg. 7, 1884, p. 429. 



'88. Die australischen rliizosl.niucu Meduseii. Zeitsehr. f. wiss. Xool., vnl. 47, Isss, p. aoi. 

 McMurrich, J. P. 



'91. The Development of Cyanea arctica. Amer. nat., vnl. 2"i, 1H91, p. 287. 

 Metschnikoff, E. 



'86. Ernbryologische Studien an Medusen. Wien, 188(5. 

 Milne-Edwards, H. 



'49. Les zoophytes. Cuvier, Ri'gne animal illustre. Vol. 10, 1840, pi. , r >l 

 Reid, J. 



'48. Observations on the development of the medusae. Annals and mag. nat. hist., ser. 2, vol. 1, 1848, p. 25. 

 Sars, M. 



'41. Ueber die Entwickhmg der Medusa aureta und Cyanea capillata. Arch. f. Naturg., vol. 7, 1841, p. 9. 

 Schewiakofl, W. 



'89. Beitrage zur Kenntnis der Acalephenauges. Morph. Jahrb., vol. 15, 1889, p. 25. 

 Schneider, A. 



'70. Zur Eutwicklungsgeschichte der Aurelia aurita. Arch, f. mik. Anat. vol. fi, 1870, p. 363. 

 Schultze, L. S. 



'98. Rhizostomen von Ternate. Abh. senckenb. naturf. Ges., vol. 24, 1898, p. 153. [Occurrence of C'assiopea, sp.?] 

 Smith, Frank. 



]91. The gastrulat.ion nf Aurelia tiavidula Per. & Les. Bull. mus. comp. zool., vol. 22, no. 2, 1891. 

 Tilesius, W. G. v. 



"29. Zur Naturgeschichte der Medusen. Nova Acta Physico-Medica, N. C., vol. 15. 1829, p. 266. 

 Vanhoffeu, E. 



'88. Untersuchungen iiber semaeostome uud rhizostome Medusen. Leuckart & Chun's Biblioth. Zool., Heft 3, 1888. 



EXPLANATION OF PLATES. 



All the figures from 1 to 28, and Figs. 34 and 36, are freehand drawings made from the living animals. Figs. 29 to 

 33 are from well-preserved specimens mounted in balsam, and were outlined with the camera lucida. The remaining figures, 

 except Fig. 37, are camera-lucida drawings of microtome sections. All the figures are reduced uniformly to .slightly less 

 than one half the diameter of the original drawings. 



LETTERING COMMON TO ALL THE FIGURES. 



b. bud. 



c. columella. 



c d. circum-oral disc, or peristome. 



c s. circular sinus. 



ex. -calyx. 



d. digitellum. 



ect. ectoderm. 



e 1. endodermal lamella, or eathammal plate. 



end. endoderm. 



e u. exmnbrella. 



g. stomach. 



g f . gastric filament. 



g p. gastric pouch. 



h. hood. 



i 1. interrhopalial lobe. 



i t. hit errh opal ia.l tentacle. 



1 g. labial groove. 



m. mouth. 



mes. mesogloea, or supporting membrane. 



n f. nerve fibres. 



o a. oral arm. 



oc. -ocellus. 



o d. oral disc. 



oe. oesophagus. 



