90 



TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Caprella linearis (3) creeps up sea-weeds and Zoophytes, 

 and is sometimes seen in eccentric and acrobatic attitudes, 

 such as holding on to a branch by one claw or balancing 

 on one hind leg. 



The commonest sand-hopper on Port Erin beach is 

 Orchestia gammarellus, and this sometimes, when a high 



/ Orchestia liftorea 2 Corophium grossipes 

 3 Caprella linearis 



FlG. XIII. 



tide is accompanied by a shower of rain, swarms out of the 

 sea on to the land in great quantit}^. On several occasions 

 during the last ten years these swarms have ascended the 

 concrete walls and steps from the beach, and have invaded 

 the Biological Station in great numbers, hopping over the 

 floor and climbing the walls, so as to get on to tables and 

 shelves. 



