NO. 1188. A NEW SPECIES OF STALKED MEDUSJS—KISHINOVYE. 



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The peduncle is nearly quadrate in cross section. It is about half 

 the length of the umbrella. It has four interradial longitudinal 

 grooves which are formed by the attachment of the tteuiola (fig. 1). 

 These tseniola meet at the longitudinal axis and divide the internal 

 space of the j»eduncle into four chambers. The demarcation between 

 jhe umbrella and the peduncle is distinct. 



The exumbrella is smooth, without prominent ridges or groups of 

 nematocysts. The gelatinous layer is equally thin everywhere and 

 firm in consistence. In the subumbrella we find a few small groups of 

 nematocysts at the perradial sinuses of the umbrella margin only. 



The muscle plates are as 

 in other species. The per- 

 radial muscles are more 

 weakly developed than the 

 interradial. The four in- 

 terradial infundibular deep- 

 enin gs nearly reach the j unc 

 tion of the umbrella with the 

 peduncles. 



The umbrella margin is 

 cut into eight adradial arms, 

 which are equal in size and 

 equally distant from each 

 other (fig. 2). The depth of 

 the incisions is about half 

 the length between a princi- 

 pal tentacle and the pedun- 

 cle. Each arm bears a 

 bunch of tentacles, 70 to 100 

 in number. Tentacles are of equal thickness, but they differ in length. 

 Their length decreases gradually as they apx)roach the periphery of 

 the bunch. 



The eight principal tentacles are transformed into adhesive marginal 

 bodies (figs. 1, 2). They are large, sessile, egg-shaped, and about one- 

 half as long as the diameter of the peduncle. 



The tpsophagus or manubrium (fig. 2) is short, quadrangular, as in 

 other species of Haliclystus. Its wall has many longitudinal folds, and 

 its free margin is reflected outward. The eight rows of well- developed 

 gastral filaments extend from the base of the cesophagus to the 

 proximal end of the genital glands. 



Genital glands are eight in number, broad and leaf-shaped, tapering 

 at both ends. They extend almost along the entire length of the 

 umbrella. As they are touching each other along the proximal half 

 their length (fig. 2), the subumbrella is almost entirely occupied by 

 them. Each gland consists of 100 to 150 round sacs. These sacs are 

 not arranged in rows. Those nearest to the perradii are larger than 

 the others. We find six to eight sacs abreast at the broadest part of 



Tig. 2.- 



-Haliclystus sTEJNEGBRr, new species. 



FROM THE OVAL SIDE. X 3§. 



Drawn by K. Kishinouye. 



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