590 MEDUSA OF THE WORLD. 



rhopalar pouches are 1.5 times as wide as the 8 tentacular pouches, but at the bell-margin 

 oniv halt as wide. 



This medusa is clearh' derived from Dactylometra longicirra of Japan. D. lactca of 

 .America tends to attain to the Kuragea condition, but all of the octants do not usualh' develop 

 equally (see text-fig. 369). 



Genus SANDERIA Gotte, 1886. 



Sanderia, Goette, 1886, Sitzungsbcr. Akad. Wissen. Berlin, Jabrg. 1886, p. 835. — VANHorrEN, 1902, Wissen. Ergeb. deutscb. 



Ticfscc Expedition, Dampfer, Valdkia, Bd. 3, Lfg. i, p. 37. 

 Seoftela^ia (an aberration), Kishinouye, 1910, Journal College Sci. Tokyo, vol. 27, art. 9, p. 14. 



The type species is Sanderia malayensis Goette, of the tropical Indian Ocean and Malay 

 .Archipelago. 



GENERIC CHARACTERS. 



Pelagidae with 16 marginal sense-organs, 16 tentacles, and 32 cleft marginal lappets. 

 4 lips, 4 interradial gonads, and 32 peripheral stomach-pouches in the radii of the tentacles 

 and sense-organs. No marginal ring-canal. 



Sanderia malayensis Goette. 



Sandtria malaytnsis, Odette, 1886, Sitzungsbcr. Akad. Wissen. Berlin, Jalirg. 1886, p. 835. — Vanhoffen, 1902, Wissen. Ergeb. 



deutsch. Tiefsec Expedition, Dampfer Valdk'ia, BJ. 3, Lfg. i, p. 38, taf. 3, fig. 12; taf. 8, fign. 69-74. 

 Neoprlagia eximia, Kishinoive, 1910, Journal College of Sci. Tokyo, vol. 27, art. 9, p. 14, plate 3, fig. 15, test-fig. 1. 



Bell flat, 90 mm. wide, large, rounded nettling-warts at the center of the exumbrella but 

 diminishing in size outwardly so as to be absent at the bell-margin. 16 marginal sense-organs 



Fig. 375. — Sanderia malayensis^ after Vanhoffen, in Valdivia Expedition. 



alternating with i6 long, ribbon-like tentacles, 32 cleft lappets. \ long, tubular (Esophagus is 

 bounded on the 4 perradial corners b\' long, complexh' folded lips. The 4 inicrradial, heart- 

 shaped, genital osna are each bordered externally b)' about 24 to 30 finger-shaped papillae. The 

 central stomach gives rise to 32 peripheral pouches in the radii of the sense-organs and tentacles. 

 These are completely separated one from another bv straight, radiating septa which converge 

 slighflv near the bell-margin in the rhopolar ladii. There is no marginal ring-canal. The gen- 

 eral color is \ellovv with the aboral center of the bell dusted o\cr with reddish flecks which 

 extend outward, spoke-like, in the radii of the sense-organs and tentacles. The mouth-parts 

 are also covered with reddish spots. 



