775 
1904 - 5 .] Report on Medusae found in Firth of Clyde. 
Cyanea capillata (Linnaeus). (Table II. 11.) 
In 1901, adult specimens were frequently found washed ashore 
near the Laboratory during October. 
In 1902, on 5th September, a young Cyanea about 15 mm. in 
diameter, with tentacles just beginning to develop, was taken in 
the tideway off the Laboratory. Early in September I noticed 
several small shoals of Cyanea between Millport and Arran. 
During September many specimens were found stranded on the 
rocks near the Laboratory. 
Mr Gray informed me that Cyanea was very common and 
generally distributed in the Clyde area during the summer of 1902. 
Its abundance was particularly noticeable in July. 
Lamlash Bay, Herdman (1880). 
Aurelia aurita (Linnaeus). (Table II. 3.) 
In 1902, the Ephyra stage first appeared on 25th February, and 
was last seen on 3rd April. Only five specimens were taken. 
The following notes are based upon information received from 
Mr Gray : — 
Aurelia aurita was not so abundant in the Clyde during 1902 
as in 1901. There was an absence of shoals, and usually only 
isolated specimens were seen. From the beginning to the middle 
of June Aurelia measuring 30-100 mm. were fairly common. 
Loch Riddan, up the Kyles of Bute, appears to be the head- 
quarters of Aurelia. The loch contained a shoal in 1901 and 
1902. On 20th June 1902 thousands were seen in the loch, 
swimming about 1-2 fms. below the surface. On 21st September 
1901 I visited Loch Riddan in the “Mermaid,” and used a trawl, 
but failed to catch a single Aurelia. The shoal which Mr Gray 
saw there earlier in the summer had evidently disappeared. Loch 
Riddan is very shallow, and its water was then very muddy and of 
a dark brownish colour, due to peaty water coming down from the 
mountains after heavy rains. The dirty appearance of the water 
reminded me of the river Tamar at Saltash, near Plymouth, 
which is a celebrated spot for Aurelia. Apparently Aurelia does 
not object to slightly brackish water, as there is at times a good 
deal of fresh water in the tidal water of the Tamar at Saltash. 
Lamlash, Herdman (1880). 
