HYDROMEDUSAE, SIPHONOPHORES, AND CTENOPHORES. 325 



The single example is in such poor condition that I can add nothing 

 to my previous account of the species, taken from the excellent series 

 collected by the Albatross in the eastern Pacific. H. papillosum is 

 already known from the Malaysian region (Maas, 1905). Consider- 

 ing how regularly it occurred in the eastern Pacific, it is surprising 

 that only one of the Philippine hauls captured it. 



Family GERYONIDAE Eschscholtz, 1829. 



Genus GERYONIA Peron and Lesueur, 1809. 



GERYONIA PROBOSCIDALIS (Forskal) Eschscholtz. 



Medusa proboscidalis FobskAl, 1775, p. 10S, 1776, pi. 36, fig. 1. Synonymy, 

 Biqelow, 1909a, p. 116, and Mayee, 1910, p. 425. (To the latter, add 

 Geryones elephas Haeckel, 1879, p. 294, pi. 18, fig. 7. 



Oeryonia proboscidalis — material examined. 



Mayer (1910) has given an excellent account and beautiful figures 

 of this species. Its ova have formed the foundation of a recent inves- 

 tigation by Maas (1908) on the composition of the egg and on the 

 early development, both normal, and when the blastomeres are sepa- 

 rated. 



Variations from the normal hexamerous condition are very com- 

 mon ; thus each of the specimens in the Albatross eastern Pacific col- 

 lection had seven radial canals. 



Geryonia proboscidalis is widely distributed over the warmer parts 

 of all oceans. 



Genus LIRIOPE Lesson, 1843. 



* 



I have recently (1909a, 1913) discussed this puzzling genus and 



given my reasons for uniting, under the name tetraphylla, all Liriope 



with angular or heart-shaped gonads. All the specimens of the 



present collection belong to that form. 



LIRIOPE TETRAPHYLLA (Chamisso and Eysenhardt) Gegenbaar. 



Oeryonia tetraphylla, Chamisso and Eysenhabdt, 1821, p. 357, pi. 27, fig. 



2. To the synonymy already given by me (Bigelow, 1909a, p. 112), add: 

 Liriope haeckeli Goette, 18S6, p. 833. — Habtlaub, 1909, p. 464, pi. 22, figs. 



29, 30, 33. 

 Liriope rosacea Habtlaub, 1909, p. 466, pi. 22, figs. 28, 31, 32.— Maas, 1909, 



p. 31.— Mayeb, 1910, p. 417. 

 TArope tetraphylla Mayeb, 1910, p. 418. 



