MUSEUM OF COMPARATIVE ZOOLOGY. 305 



From the termination of each radial tube on the bell margin hangs a long 

 flexible tentacle, which is unbranched, and in alcoholic specimens appears to be 

 enlarged at the distal end. There are sixteen tentacles in most specimens. 

 Several had less, but none more than this number. 



No otocysts were found on the bell rini. 



The ovaries are four in number, and in all the specimens are very well 

 developed. They cover the outer walls of the proboscis, and seem to fill almost 

 the whole of the upper part of the bell cavity. Each gland consists of many 

 small leaflets arranged in parallel rows side by side, and opening into a tube 

 which is a continuation along the surface of the proboscis of one of four 

 radial vessels. By the method of attachment of the ovaries to the proboscis 

 and the inner walls of the bell, the upper part of the bell cavity is separated 

 into four recesses, which are divided from each other by partitions. These 

 recesses are bounded above by the apex of the bell, on one side by the bell 

 walls, and on the other sides by the partitions mentioned above and the walls 

 of the proboscis. Upon the lower edge of the partitions which separate the 

 recesses pass the chymiferous tubes, from the ovaries to the inner surface of 

 the bell. 



The lips about the mouth are so poorly preserved that their structure could 

 not be satisfactorily made out. The color of the ovaries in alcohol is dark 

 brown ; the bell walls and tentacles are white, with a tinge of bluish color. 



The relationship of this medusa to forms like Turris is very great, so far as 

 the general character and place of attachment of the Ovaries is concerned. The 

 existence in Calycopsis of sixteen radial tubes instead of four, is a feature which 

 it shares with none of the Anthomedusae. On the other hand, my failure to 

 find otocysts on the bell rim seems to support the reference of it to Tubularian- 

 like jelly-fishes. The otocysts could not be found after a persistent search, and 

 are probably wanting. If sense bodies of this kind are present in Caly 

 the place of attachment of its ovaries has such a strong likeness to those of 

 Twrris that the medusa would combine extraordinary features and be a most 

 abnormal form, the number of radial tubes is so great. 



Chromatonema rubrum, gen. et sp. nov. 



Fig. 40. 



Several specimens of a large hydroid medusa in a distorted condition, and 

 apparently allied to Staurophora in the position of the sexual organs, were 

 found. 



The form of the bell is shown in the figures. There are four red-colored 

 chymiferous tubes, near the origin of which from the proboscis are situated the 

 ovaries. The sexual glands are routined to the upper pari of the bell, hanging 

 from the chymiferous tubes for aboul one third their course. Their color is 

 bright red. No otocysts were found. The number of tentacles varies from 

 twelve to sixteen. In alcohol their color is red. The affinities of this medusa 



vol.. ix. — no. 8. 20 



