BAHAMA MEDUSiE. 29 



A number of specimens of this medusa, in various stajj^es of growth, were 

 obtained at this tinu". They were all captured in a dredge at a depth of two 

 fathoms, about" one (|uarter of a mile off Brown's Toint, (Jreat Peccmic Bay, 

 wliere tlie bottom was covered wiUi driftinii sea-weed. None were seen upon 

 the surface. 



AnuLT Medusa, Tamoya IIapi.onkma. 

 Figf. Gl-iU, Plate VII. 



Bell 90 mm. high, 55 mm. wide; wi(h vertical si<les and relatively flat top. 

 Exumbrella surface thickly covered with white wart-like clusters of nemato- 

 cysts. Four pedalia, 30 mm. long, wing-like and sharp-edged. Tentacles 90 

 mm. long, hollow, very flexible, and bearing regularly spaced rings of nema- 

 tocysts that are capable of inflicting a si'vere sting to the hand. The sensory 

 clubs (Figs. 63, 64) have two large median, and four small lateral eyes, all 

 being upon the inner side of the bulb. The large eyes are provided with 

 prominent convex lenses and are ectodermal. There is a large terminal 

 entodermal otolith composed of a mass of concretions. 



The velarium is well d(>veloped, ami there are ten dendritic velar canals 

 in each quadrant which terminate in numerous, non-anastomosing branches 

 (see Fig. 62). 



The nervous ring running from th? base of each pedalium to the sensory 

 clubs is distinctly visible as a white cidored cord. 



The stomach extends about one-third of the distance from the inner apex 

 to the level of the valarium, ami there are four slightly recurved lips. The 

 gastric cirri are shoit and numerous. 



The genital organs are curtain-like with frilled edges. They project from 

 the interradial septie into the gastro-vascular pouches of the bell on either 

 side. There are thus eight curtain-like sheets projecting into the four radial 

 poiu'hes. In old specimens the gonad ■; are so large lliat their free edges 

 overlap beyond the central line of each pouch. 



The gelatinous substance of the bell is transparent. The long, flexible 

 tentacles are a milky yellow, often with a faint pui'ple-hue. There are large 

 white wart-like clusters of nenuitocysts over the pedalia and valarium. The 

 genital organs are milky-yellow, an<l tl e (»yes dark brown. 



This medusa is exceedingly active, and the gelatinous substance of its bell 

 tough and rigid. 



