162 MARIE V. LEBOUR 
SEM .£OSTOME.E. 
(17) Chysaora sp. Once in November. 
(18) Aurelia sp. Ephyre. One on January 24th. Continues fairly 
commonly from February to the beginning of April, then stops. 
One occurred on September 6th. 
SIPHONOPHORA. 
(19) Muggiea ailantica J.T. Cunn. Once at the end of January, rare in 
February, but continues till September, when it is very common. 
CTENOPHORA. 
(20) Pleurobrachia pileus Fab. Fairly common, February to July, and 
from September to November, chiefly young forms. 
(21) Bolina infundibulum Fab. On June 14th the nets were full of 
it with Saphenia gracilis. In October, 1915, it was fairly 
common. 
(22) Bero? cucumis (Kab.). In October and November, 1915, and 
in- May to August, 1916, rare. 
ZOANTHARIA. 
(23) Arachnactis Bourne: Fowl. Larva of Cerranthus Lloyd Gesse. 
From March to June, common. 
(24) Peachia sp. larva (=Halcampa chrysanihellum (Peach) of Haddon), 
common, May and June to the middle of July, on meduse. 
PLATYHELMINTHES. 
Amongst these are some interesting larval trematodes which oceur 
in the free state, having been captured probably in the interval of 
changing hosts. Also two parasitic in meduse and in Sagitta, both of 
which eventually enter fish as their final host. 
(1) Pharyngora bacilaris (Molin). What I believe to be the free-swimming 
tailed cercaria of this species occurred once in fair numbers on 
January 28th, 1916. It is described in a separate paper (p. 201) 
of this Journal. The late cercaria without a tail is found parasitic 
in medusze and in Sagitta, besides being sometimes free in the sea 
at intervals throughout the year. Commonest in June. 
