9G CLASS CIRRHIPEDA. 



stalks, as in the crab and lobster, in front, at the sides 

 of the body. 



*' Some of these curious creatures were collected in the 

 Spring of 1 826 ; and, in order to see what changes they 

 might undergo, were kept in a glass vessel, covered by 

 such a depth of sea-water, that they could be examined 

 at any time by means of a common magnifying glass; 

 they were taken on May the 1st, and on the night of 

 the 8th, the author had the satisfaction to find that two 

 of them had thrown off their exuvicE*, and, wonderful 

 to say, were firmly adhering to the bottom of the vessel, 

 and changed into young Barnacles ! such as are usually 

 seen intermixed with grown specimens, on rocks and 

 stones, at this season of the year. The eyes were still 

 perceptible, although the principal part of the black 

 colouring-matter appeared to have been thrown off with 

 the exuviae. On the 10th, another individual was seen 

 in the act of throwing off its shell, and attaching itself, 

 like the others, to the bottom of the glass." 



* The skin or sliell with wliicli the animal is covered before transfor- 

 mation. 



