APPENDIX. 



493 



Bougainvillea fruticosa (see page 160). 

 Bougainvillea fruticosa, Goette, 1907, Zeit. fur wissen. Z00L, Bd. 87, p. 39, taf. a, fign. 72-77. 



Goette finds that the egg-cells in this medusa originate in the entoderm and then wander 

 into the ectoderm. The sperm, however, originates and remains in the ectoderm. 



Nemopsis sp. (see page 173). 

 Van Breeman, 1907, Tijdschr. Nederland. Dierk. Ver., Ser. 2, Bd. 10, p. xxiv. 



Van Breeman records the capture of medusae of Nemopsis in the Zuiderzee, Holland. 



Rathkea octopunctata (see page 177). 



Ralhkea octopunctata, Braem, 1908, Biolog. Centralblatt, Bd. 28, p. 70, fign. 1-5. 



Lizzia octopunctata, Bigelow, 1909, Proc. National Museum, Washington, vol. 37, p. 306, plate 31, figs. 3-5. 



Braem contends that the process of formation of medusa-buds upon the manubrium of 

 Rathkea octopunctata and Lizzia claperedei is not comparable with ordinary budding such as 

 in hydroids when both ectoderm and 

 entoderm take part in the formation 

 of the bud, but is a germinal process, 

 the buds being composed entirely of 

 germ-cells situated in the ectoderm. It 

 is not known, however, that a single 

 germ-cell gives rise to a bud, but the 

 daughter medusa may be formed by an 

 aggregation of such cells, and until the 

 exact mode of formation of the early 

 stages of the daughter medusae is demon- 

 strated we can not be certain whether 

 to regard the process as being one of 

 budding or of germination. Braem, 

 however, shows strong evidence, in so 

 far as it extends, to support the belief 

 that we have here a germinal process. 

 It this be the case it may be in some 

 measure comparable to the formation of 

 certain tumors in higher animals. 



Genus Scrippsia Torrey, 1909. 



Scrippsia, Torrey, 1909, Publications University of 

 California, Zool., vol. 6, p. 14. 



This jrenus resembles the closely 

 allied Polyorchis (see page 218), but is 

 distinguished by its gelatinous, gastric 

 peduncle and the absence of pinnate 

 branches on the radial-canals distal to 

 the gonads. The gonads are long and 

 tubular as in Polyorchis, but are con- 

 fined to the radial-canals over the 1G ' 3 * 7 ' 

 peduncle. 



The tvpe species is Scrippsia pacifica from the coast of California. 



Scrippsia pacifica, after Torrey, in University of California 

 Publications in Zoology. 



Scrippsia pacifica Torrey. 

 Scrippsia pacifica, Torrey, 1909, University of California Publications, Zool., vol. 6, p. 15, fig. 3. 



Umbrella 75 mm. high, deep bell-shaped with a slight apical prominence. The tentacles 

 are long and tapering and arranged in 7 cycles: 4, 4, 8, 16, 32, 64, 128. The 4 perradial 

 tentacles are the longest and project from the sides of the exumbrella at a zone one-fifth the 



