Mr. F. S. Conant on the Cubomeduste. 



33 



horizontal groups of gastric filaments, simple or double, tuft- 

 or brusL-sliaped, limited to the interradial corners of the 

 stomach. 



Fi^. 1. 



Charyhdea xaymacana. 



Heference letters in Figures, 



oj', furrow on inner surface of exumbreUa underlying tlie adradial ridge 

 on the outer surface ; afr', fun-ow on outer surface, setting ofi the 

 area in -svliicli the sensory niche lies ; ct, canal of the tentacle ; go, 

 fjastric ostium ; ifr, inteiTadial furrow on outer surface ; n, nerve- 

 ring on the subuiubrella ; pe, pedalium ; jjh, phacellus ; y/?-, proboscis ; 

 r, reproductive organ ; sn, sensory niche ; su, suspensorium ; sub 

 subumbrella ; vc, velar canals. 



Species : Charyhdea xaymacana. 



Bell a four-sided pyramid, with the corners more rounded 

 than angular, yet not so rounded as to make the umbrella 

 bell-shaped. The sides of the pyramid parallel in the lower 

 two thirds of the bell, in the upper third curving inward to 

 form the truncation ; near the top a slight horizontal con- 

 striction. Stomach flat and shallow. Proboscis with four 



Ann. & Mog. N. Hist. Ser. 7. Vol. i. 3 



