224 



ASAJIRO C'KA. 



" Marginal (Ring) canal, voluminous. 



" Centripetal canals (such as those of Olindias, Geryonia, etc.) absent. 

 " Tentacles, solid, in three sets, the horizons of the insertion of which 

 are superimposed : — 



"(i.) A highest (nearest the umbrella-pole) set of four large per- 

 radial tentacles — primary tentacles. 



" (2.) A second tier of twenty-eight or more medium-sized tentacles 

 placed between these in four groups of seven — secondary tentacles. 



" (3.) A third tier of one hundred and ninety-two or more small 



tentacles placed in groups of six between the last — tertiary tentacles. 



" Tentacles-rivets (Mantelspangen) connecting the roots of the tenta- 

 cles with the marginal ring (Nesselring) are connected with all the 

 tentacles. 



" Otocysts placed along the line of the velum : about eighty in 

 number, from sixteen to twenty between each pair of perradial tentacles, 

 arranged in groups of two or three between the successive secondary 

 tentacles. 



" Velar centrufugal canals are present, passing from the otocysts — one 

 from each otocyst — into the velum, and there ending blindly. They 

 appear to correspond in character to the centripetal canals found in 

 other Trachomedusa; in the disc. Their presence constitutes the chief 

 peculiarity of the genus Craspedacustes, and may necessitate the formation 

 of a distinct family or suborder for its reception. 



" Ocelli are wanting. 



" Gonads. Four oval sacs depending into the cavity of the subum- 

 brella from the four radial canals." 



Vergleicht man nun diese Diagnose mit der obigen Beschreibung, 

 wird man sofort erkennen, dass darin zahlreiche Punkte enthalten sind, die 

 für die neue Form nicht passen. Wenn der Diagnose einer Gattung eine 

 einzige Spezies zu Grunde liegt, wie es hier der Fall, ist es unvermeidlich, 

 dass sie zur Aufnahme der neu entdeckten Formen gehörig modifiziert 

 wird. Auch die Angabe Lankester's, dass die Tentakel solid seien, bedarf 



