MUSEUM OF COMPARATIVE ZOOLOGY. 87 



These invarialjly have eight otocysts iiit*tead of four, even liefore the ovaries 

 ■were devehipeil, and while tliere are but two tentacles which are opposite 

 each other. 



In connectif>n with Oceaniopsis it may be well to mention a new species of 

 Eucheilota, a young stage (Fig. 13) of which was talcen in surface collecting 

 at Newport last summer. Tiiis jelly-fish resembles closely the young of E. ven- 

 tricularis McCr., but, unlike it, has only four otocysts. There are two ten- 

 tacles, which arise diametrically opposite each other on the bell margin, at the 

 junt-tiou of radial and circular chymiferous tubes. Near the base of each ten- 

 tacuhir 1_)u11j there hang two sliort filaments, ;is in Euchcilotn. 



The otocysts are situated on the liell rim, half-way between the ])eripheral end 

 of the radial tubes. Near each otocyst there hangs a short filament, not unlilve 

 those situated near the tentacular bulbs. 



The single specimen taken was undoubtedly larval, and no indication of the 

 sexual organs was seen. If tlie number of otocysts does not increase as the larva 

 grows older, tliis ^Ii'dusu is pi-obably tlie young of a new genus ; otherwise, it 

 may be the immature form of some well-known Medusa like Eucheilota. Pro- 

 visionally, therefore, I have referred it to Eucheilota, ami designate it as the 

 young of E. iiuadralis sp. nov. 



Cladonema sp. 



The genus Cladonevia has up to tlie ]tresent- time never been taken from 

 American waters. A species of this genus, found by Dr. C. O. Whitman near 

 Key West^C'ity, in 1883, is in certain particulars different from the C. radia- 

 tuin l)u Jardin, and may be found, on a more extended study, to be a new 

 species. 



Cladonema was fijund \\-itli Cassiopea on the shoals near Fleming's Key.* 

 At the time of capture it was apparently at or very near the sea Ijottom, and 

 was brought up in a dip-net witli sand from the slund. 



The bell is almost spherical, and is destitute of an apical projection. The 

 outer surface is smooth, and the Jjell walls thin. No indication could be 

 seen, either in sketches of the animal when alive or in the preserved specimen, 

 of a cavity at the base of the proboscis called a "brood sac" in the related 

 genus Dendroncma. 



There are nine chymiferous tul)es in tiie bell walls. Of these tubes, six only 

 originate from the base of the proboscis. Three chymiferous tubes pass directly 

 without sudi\'ision from tlu; ])roboscis to tlie bell maigin, and thi'ec; bifurcate 

 a sliort distance from their origin. The three bifurcating tuljes alternate witli 

 tliose wliich do iu)t divide. 



There are nine large tentacles hanging from the bell margin, each at an ex- 

 tremity of a chymiferous vessel. At the base of each there is an " eye-spot" of 

 black cc)lor. Two kinds of lateral branches arise from tlie tentacles. The first 



* A mangrove key, a sliort distance north of Key West, Florida. 



