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thern I may mention the Cemoria flemingii, of which Mr. 

 Smith, of Jordan Hill, dredged up two specimens ; but, 

 having mislaid them, he was afterwards induced himself to 

 doubt the fact, and came to the conclusion that he must have 

 been mistaken. About two years since, being introduced to 

 liini in Gibraltar, he gave me some fossil specimens from the 

 tertiary formation of the Clyde Basin, assuring me they were 

 the only representatives of the genus. I procured many 

 of them alive in the Clyde, and a single specimen off Skye. 

 Patella fulva, or rather Lottia fulva, I found also sufficiently 

 frequent in Loch Fyne. Likewise Peclen nebuhsus, of which 

 T once procured fourteen live specimens in a single haul, I lay 

 before you some varieties of it. It appears to me somewhat 

 remarkable that several of the shells I have named are inha- 

 bitants of the Noiwegian Sea, but have never yet been met 

 with on the east coast of Scotland. 



Some particulars of our cruise round Anglesea were 

 embodied in the Report of the Dredging Committee of the 

 British Association. I have, however, brought specimens 

 of a variety of Purpura lapillus, remarkable for being 

 strongly and beautifully imbricated in its various stages of 

 growth. Tt was met with off Rhoscollyn in not less than 

 eight fathoms water, — an extraordinary depth, for what is 

 commonly so strictly a littoral species, and exemplifies the 

 modifications of form consequent upon a deviation from the 

 usual habitat. 



Of Crustacea I can lay no specimens before the society, 

 having placed what I. have met with new and rare, in the 

 hands of Mr. Henry Goodsir and Professor Thos. Bell, 

 who are at present employed in the publication of a work 

 upon this interesting branch of zoology. 



Of Echinodermata, the present extraordinary, but some- 

 what obscure animal is not unfrequent in Loch Fyne. It 

 is said to be the same figured by Muller, in the " Zoolo- 

 gia Danica," under the name of Holothunia squamata, 



