8 ART. 9. — K. KISHINOÜYE : 



margin of urabrelln than in other parts. The pedalia are 

 long, well-developed, nearly 82 times as long as high, and about 

 half as long as the height of umbrella. The proximal portion of 

 the pedalia is triangularly prismatic, while the distal portion is 

 laterally compressed. The pedalia arc keeled along the lateral 

 median line. 



The tentacles are very thick and long, about eight times as 

 long as the height of umbrella. They are easily severed, and their 

 sting is so fiery, that the medusa is much dreaded by fishermen. 



The crypta3 rhopalares open externally with a crescent-shaped 

 aperture, convex towards the oral side. The rhopalia or the 

 sensory club is pear-shaped. On its axial side we find two well- 

 developed ocelli and a pair of pigment-rings or degenerated ocelli. 



The gastrovascular system is well developed. The oral tube 

 is quadrangularly prismatic, about ^/a so long as the height of 

 umbrella. The wall of the oral tube is rather thick and tough ; 

 but the oral opening is more or less contractile. It is surround- 

 ed by four triangular lobes. The stomach cavity is almost 

 spherical, occupying a little less than half the height of umbrella. 

 Between the wall of the stomach cavity and the subumbrella, 

 there are four perradial vertical lamellae, called the upper 

 frenula, suspensoria or mesogonia. The radial pouches are 

 broad and rectangular, separated from each other by narrow 

 cathamma. 



A broad canal is found in each tentacle. The canal sends 

 ojßf a vertical blind branch at the insertion of pedalia with 

 umbrella. 



The velarium is broad, with from six to eight complexly dendri- 

 tic canals in each quadrant. These canals occupy nearly the 

 whole expanse of the velarium. 



