from the Fidkland Islands. 279 



cacli witli about ol<];hty to one limidred or more terminal 

 brntiches, with clusters of iiematocysts. 



Gonads Uj)on the stomach and tlie lobes of tiie stomach, 

 lianging down in a folded band from the peduncle. 



Compound basal bulbs four, perradial, V-sliaped, about 

 thirty-five to sixty-five tentacles in each bulb, arranged in a 

 double row. 



An ocellus at the base of every tentacle. 



Size: up to 15 millim. in height and 15 niillim. in width. 



The collection contains about one hundred and seventy 

 specimens of this species, showing a complete series of stages 

 from the earliest up to the fully developed adult. 



The previous descriptions are based upon intermediate 

 stages. 



Cladouemidse. 

 Eleuthekia, Quatrefages (1842). 



Cladonemidfe with four or more undivided radial canals 

 and four or more tentacles which are divided into two 

 branches, one terminating with a knob of nematocysts and 

 the other with a sucker. 



Gonads over the top of the stomach. Mouth simple. 

 Exumbrella without nematocysts. 



Eleut/ien'a Vallentini, sp. n. 



Umbrella circular, about twice as broad as high. 



Stomach-tube conical and small. 



Mouth -without lips, a plain round margin. 



Gonads occupying the whole of the upper part of the 

 umbrella, above the stomach. 



Tentacles twenty-four, divided into two branches, the upper 

 branch with clusters of nematocysts, the lower with a terminal 

 sucker. 



An ocellus on the extreme margin of the umbrella opposite 

 each tentacle. 



Size: 3 millim. in width and 2 millim. in height. 



'J he collection contains only a single sjiiecimen of this fine 

 medusa, and it was found on a frond of Macrocystisy com- 

 monly called kelp. 



Williadae, Forbes (1848). 



Anthomedusae with four, six, or more radial canals, each 

 having one or more lateral branches (except very early 

 stages), all lunning to the margiu of the umbrella. Mouth 



