48 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



the seaward end. Extensive repairs have been made at 



various times in the interval and practically the whole of the 



platform has been renewed. The colony has persisted through 



all the changes and is as extensive now as it was twenty-five 



years ago. There is a distinct indication of segregration of the 



orange and white members composing the colony. There is 



only slight intermingling. 



There are indications that other colonies of the vestlet 



exist in the Irish Sea area. Its pelagic larva, known as 



''Arachnactis" is not rare at times in the surface plankton of 



Port Erin Bay. It is quite easy to fail to find the adults, even 



after the colony has been located. If the tide has finished 



ebbing when one arrives at the spot, the chances are that no 



vestlets will be seen. That has been my experience on more 



than one occasion. Even then, however, it is possible to 



detect the exposed end of the felted tube. 



The south-east shore of Piel Island has long been known 



to be rich in some marine forms. It carries an extensive 



growth of algae such as Halidrys, Laminaria, etc. It was this 



particular area that supplied Drs. Gamble and Keeble with 



practically all the Hippolyte varians used in their lengthy 



experiments in colour change 1898-1900. Hippolyte is still 



abundant. Other Crustacea and various echinoderms are to be 



found amongst the algae and under the stones. Pholas Candida 



lives in the boulder clay. 



A. Scott. 



(4) The occurrence of Priapulus caudatus, Lamarck, in 

 Luce Bay. 



Priapulus caudatus, Lam. This Gephyrean was noticed 

 for the first time in the autumn of 1919 and is recorded in 

 Appendix B., Thirty-third Annual Report of the Liverpool 

 Marine Biology Committee. It may be useful to explain 

 where and how it was obtained. Early in October, 1919, the 

 Lancashire Fisheries steamer collected a number of adult 



