476 MR, E, T. BROWNE ON [Mar. 17, 
Lizzia blondina has, in the adult stage, four perradial groups of 
three tentacles and four single interradial tentacles. The increase 
of new tentacles is shown in the following list. 
Specimens collected by Mr. Garstang at Plymouth during July 
and August, 1893 :— 
Perradial tentacles... . qd, 
Interradial tentacles .. 111 
Perradial .... 1112 2211 92121 9999 
Interradial .. 1111’ 1111’ 1111’ T1iT 
On my arrival at Plymouth at the end of August, 1895, I found 
Tizzia fairly abundant in the tow-net, but no specimens were taken 
after the second week in September. 
The following list drawn up from these specimens shows the 
increase of the tentacles :— 
Perradial.... 1112 2121 2221 2992 2993 3339 
Tnterradialyy ae hie VT Thi? Pee hs 
: (9 specimens). 
At Valencia, 1895, Lizzia appeared in the tow-net a few days 
before my departure at the beginning of June. I only obtained 
a few specimens, which possessed the following number of 
tentacles :— 
Perradial.... 2222 2223 3333 
Interradial.. 1111’ 1117 1111 
The umbrella of the earliest stage is about 1 mm. in length and 
nearly as wide, with a slight transverse constriction above the 
sub-umbrella, The largest specimens are about 14 mm. in length. 
Nearly every specimen belonging to the early stage has medusa-buds 
upon the stomach. One of the largest specimens taken at Plymouth 
had a mass of ova surrounding the walls of the stomach. The 
budding of meduse is followed by sexual reproduction, just as in 
many other meduse. 
There are always four simple oral tentacles, each terminating 
in a large cluster of nematocysts. I have never seen more than 
one cluster of nematocysts upon each oral tentacle, and always 
four single interradial tentacles. These points distinguish Lizzia 
blondina from Margelliwm octopunctatum. 
Abnormal Specimen.—An abnormal specimen was taken at Ply- 
mouth on 31st August, 1895, with 3 radial canals, 3 oral tentacles, 
3 groups of perradial tentacles, with 2 tentacles in each, and 3 
single interradial tentacles. 
Claparéde described and figured a form of Lizzia, which 
Haeckel has regarded as a distinct species and has placed it in 
his monograph under the name of Lizzia cluparedeit. The medusa 
has four perradial groups of two tentacles, and four single inter- 
radial tentacles ; four simple oral tentacles, each terminating in a 
cluster of nematocysts. Ova upon the walls of stomach. The 
shape of the umbrella resembles that of Zzzta blondina, 
