8G BULLETIN OF THE 



and these are arranged opposite each other on the bell margin. The eight 

 rows of lasso-cells ou the outer surface of the bell are similar to those in 

 E. ochracea. 



The youngest larva of E. ochracea from Ifewport has four tentacles. A 

 larval Ectopleara with two tentacles has not been Recorded previous to this ob- 

 servation of the Bermuda species. 



Fig:. 13. 



The Ectopleura mentioned above was accompanied by several young Tubu- 

 larians, all in a like stage of developmen-t, which could not be placed in any 

 known genus. The outlines of the bell are similar to those of Sarsia. Its 

 outer surface is covered with nematocysts, arranged without regularity. 



The Medusa is peculiar in possessing two simple tentacles placed opposite 

 each other on the bell rim, and a pair of small, a])parently rudimentary ten- 

 tacles at the extremities of the two remaining chymiferous tubes. These Me- 

 dusae are the larvae of some unknown Tubularian related to Sarsia. 



Oceaniopsis gen. nov. 



The genus Oceaniopsis diflers from other members of the Oceanida; in pos- 

 sessing four octocysts, from the neighborhood of each of which, on the bell 

 margin, there arise small tentacular filaments. 



Oceaniopsis Bermudensis sp. nov. , 



Figs. 8, 9, 10. 



Two stages in the development of this jelly-fish were found. The younger 

 of these has two large, opposite tentacles, while the older has four. 



The characters of the former (Figs. 8, 9) are as follows. The bell is low, 

 without raised apex, with smooth external surface and thin flexible walls. 

 There are four spherical ovaries (s) which hang from the chymiferous tubes 

 midway between the proboscis and tlie bell margin. Two long tentacles 

 (Fig. 8) take origin opposite each other on the bell rim. The rudiments of 

 two others (Fig. 9) are plainly visible on the bell rim, midway between the 

 last, as prominent projections on the bell margin. Tlie bell bears four oto- 

 cysts. From the neighborhood of each otocyst on the bell margin spring three' 

 or more, sometimes two, small filaments. No filaments are found, as in Eu- 

 cheilota. in the neighborhood of the tentacular bulbs. 



An older stage (Fig. 10) of the same Medusa has four well-developed ten- 

 tacles, each of which arises from a tentacular bulb, situated at the terminus of 

 the radial tube near the bell margin. There are no other additions of impor- 

 tance in this larva, which is probably not far removed in shape from that of the 

 adult. Several larvte of Oceania lanrjidda A. Ag., occurred with Oceaniopsis. 



