324 PELAGIC LIFE, PALMOUTH. 



visible in every instance when viewed under the microscope. The 

 weather at the time was very hot, and the temperature inside 

 m.y hut, in spite of all my efforts, frequently registered 80° F. As 

 a natural consequence quantities of the specimens in my aquaria, 

 died, and with them these Oephalopods. So far as I am able to 

 determine these capsules were deposited by Sepiola atlantica. 



On several occasions since my last report, I have found 

 specimens of this mollusk left on the shore by the retreating 

 tide. At Plymouth this Cephalopod is secured in abundance. 

 Curiously enough, Sepiola atlantica is not mentioned by Dr. 

 Cocks in any of his reports, although S. rondeletii is recorded. 

 That last named species I have never yet met with. Sepiola 

 atlantica is abundant in the summer time at Helford, Mullion 

 cove, and also in Watergate bay near Newquay. 



Hydroids. 



On the 9th of August of this year, the weather not 

 appearing very favorable for a long collecting trip, I spent 

 the morning collecting in the tidal harbour. While drifting in 

 my praam that morning, over some shallow ground close to No. 

 1 dry dock, waiting for the tide to fall, I noticed swimming in 

 the water a most beautiful gonozooid. On placing it in a 

 collecting bottle and studying its movements for a short time, 1 

 at once saw that the specimen had come from no great distance, 

 and when the tide had sufficiently receeded, I carefully examined 

 the under surfaces of the stones in that locality. Without much 

 difficulty I secured a dozen specimens. On the 7th of September 

 following, the tide being sufficiently low, I collected on the 

 same ground upwards of thirty more individuals, and sent some 

 of them to Mr. Garstang at Plymouth. These specimens seem 

 to be confined to a small patch of ground about four yards in 

 diameter, and only exposed during good spring tides. As there 

 is a full historical account of this gonozooid in Hinks' British 

 Hydroid Zoophites it is needless for me to repeat what is 

 already published in that monograph. After having made some 

 camera drawings of these individuals, I placed them in a glass 

 jar with a current of sea water continually passing through. 

 Within a few days a great number of them died, for I was at a 

 loss to discover what to feed these animals on. I then emptied 



