sea-fisheries laboratory. 153 



Addendum. 



The species of Crustacea we worked with, have been 

 kindly identified by A. O. Walker, Esq. From the very 

 limited fauna of Piel shore, it may be of interest to give 

 the list, which, however, is not quite complete. 



Hippolyte varians, Leach, common, just below the 

 level of ordinary spring tides. 



Hippolyte fascigera, Gosse, a doubtful species. 

 Almost certainly a variety of H. varians. 



ILess common but oc- 

 curnng with the 

 foregoing. 



A species of Mysis which gave interesting results and 

 which occurs with Hippolyte has been determined as 

 Mysis neglecta, G. 0. Sars. 



A small collection of Pycnogonida, which have no con- 

 nection with the present research but which were taken 

 among the fine red weeds of the Barrow Channel, contains 

 the following forms : — 



Ammoihea echinata, Hodge. 



Anoplodactylns petiolatus (Kroyer). 



Pallene brevirostris, Johnst. 



Nymphon gracile, Leach. 



