753 
1904 - 5 .] Report on Medusae found in Firth of Clyde. 
Lar sabellarum, Gosse. (Tables I. 18 ; II. 18.) 
Lar sabellarum , Hincks, 1872, p. 313, pi. xix. 
Willsia stellata, Forbes, 1848, p. 19, pi. i. 
Lar sabellarum , Browne, 1896, p. 468, pi. xvi. ; 1898, 
p. 818, figs. 1-9. 
In 1901, it was taken from the middle of July to the middle of 
November. Early and intermediate stages were fairly common at 
the end of July. At the end of September adults were present 
in the nets, and also a few early stages, but most of the specimens 
belonged to the third stage in development and had eighteen 
tentacles. 
In 1902, it first appeared about the middle of July, and dis- 
appeared in the middle of November. It was not so plentiful 
as in 1901. On 6th October the earliest stage with six tentacles 
and the adult stage with twenty-four tentacles were taken. 
Description of an abnormal specimen with two stomachs : — This 
specimen possessed two perfect stomachs. One stomach was 
in its proper position, but had only three lateral lobes instead 
of the normal six. The second stomach was on one of the radial 
canals, about half way down the sub-umbrella. Both stomachs 
were provided with mouths, each of which had seized an 
Oikopleura . There were six main radial canals (the normal 
number), two from each lobe of the central stomach. The specimen 
had reached the third stage in development, and had eighteen 
tentacles. 
This medusa is liberated from the hydroid Lar sabellarum . 
Lizzia blondina, Forbes. (Tables I. 12; II. 20.) 
Lizzia blondina , Forbes, 1848, p. 67, pi. xii. 
Browne, 1896, p. 475. 
In 1901, it first appeared at the beginning of June, and was last 
seen on 18th October. It was very abundant on 20th July; 
evidently a shoal had come up the firth. Specimens taken on 
17th September belonged to the first stage in development. 
They had eight single tentacles, but a few specimens showed the 
commencement of the second tentacle in the perradial groups. 
Minute medusa-buds were present upon the stomach. 
PROC. ROY. SOC. EDIN. — VOL. XXV. 
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