Mr. F. S. Conant on the Cabomedusge. 35 



half the depth of the cavity, and at times evea to the bell- 

 margin. In the gelatine of the proboscis an irregular number 

 (15-22) of sensory organs resembling otocysts, from the 

 presence of which comes the specidc name. Phacelli brush- 

 shaped, composed of from 7 to 13 filaments springing from a 



Fisr. 2. 



Tripedalia cystopTiora. 



single stalk in each quadrant, or, rarely, from two separate 

 stalks in one of the quadrants. Distance of the sensory clubs 

 from the bell-margin about i or { of the height of bell. 

 Breadth of velarium about ^ the diameter of bell at margin ; 

 with 6 velar canals on each quadrant; the canals simple, 



3* 



