2S2 ^Ir. Vj. T. Browne on llij'lroincdusic 



PlliALELLA, gen. nov. 



p]ucopi(lni with eight adradial marginal sensory vesicles. 

 Each with two or more otoliths and situated on the margin 

 of the umbrella between two tentacles. i\lany tentacles. No 

 nuir<iinal cirri. A <ronad on each of the four radial canals. 

 Stomach not on a peil uncle. 



Phialella faUclaiidic'i J sp. n. 



Umbrella semiglobular, little broader tliaii high, with tiiiek 

 ■walls. 



Stomach short and quadrangular. 



Mouth with four lips and a tiuibricated margin. 



Gonads hanging down in wavy folds, occupying nearly the 

 whole length of the four radinl canals, not touching tlie 

 stomach and not extending quite down to the margin of tlie 

 umbrella. 



Tentacles sixty to seventy, witli large basal bulbs. 



tSense-organs eight, adradial, with two or more otoliths. 



Size: u|) to 17 milliin. in width and 11 millim. in height. 



The collection contains eigiit specimens, which show a 

 scries extending from an intermediate to the adult stage ; but 

 there are no very early stages. 



PJiialidium cymhaloideum (van Beneden), found in British 

 seas, belongs to this new genus. 



Phialidium, Leuckart (1856). 



Eucopidce with many marginal sensory vesicles. One or 

 more between every two tentacles, each having a single 

 otolith. Many tentacles. No marginal cirri. A gonad on 

 each of the four radial canals. Stomach not on a peduncle. 



Pliialidium simplex, sp. n. 



Undjrella watchglass-shaped, twice fo three times broader 

 than high. 



Stomach short, with four perradial lobes. 



jSIouth with four large fimbricated lips. 



Gonads extending over the outer half of radial canals and 

 reaching nearly down to the ring-canal, slightly folded. 



Tentacles sixty to eighty-five, and a lew tentacular bulbs; 

 the maximum number ]>robably about one hundred. 



Sense-organs one between every two tentacles, \\itli a 

 siny-le otolith. 



