﻿Study of the Animal Ecology of the Shore. 



Gammarus marinus, Leach. Young. 

 Ligia oceanica (L.). Young. 



ZONE 2— UPPER HALF. 



A. Where fresh water does not percolate, 

 i. Upper Surface of Stones. 

 Actinia equina, L. Common. 

 Sagartia troglodytes, Johnst. Small ; in crevices. 

 Enchytrseids. Various. 

 Modiola modiolus, L. 3 mm. 

 Mytilus edulis, L. Young ; in crevice. 

 Patella vulgata, L. One 3 cm.; travelling. 

 Purpura lapillus (L.). Full grown, and minute. 

 Littorina rudis (Maton). -5 mm and less ; very common. 



,5 ohtusata (L.). Full size, and minute. 



„ littorea (L.). Large (28 mm.); in moist situations. 

 Balanus halanoides (L.). Very common. 

 Gammarus marinus, Leach. Very common. 

 Ligia oceanica (L.). Young. 

 Carcinus mcenas (Penn.). 4 mm. and 17 mm. 

 Anurida maritima (Guer.). 

 Staphylinidse and larvae. 



A black Ant was observed, but not captured. 



ii. Under Stones. 



Actinia equina, L. 



Procerodes ulvce (Oersted), with cocoons. 

 Spirorhis horealis, Daudin. 

 Alcyonidium my till, Daly. 

 Patella vulgata, L. 

 Purpura lapillus (L.). 

 Littorina rudis (Maton). 



„ littorea (L.). 

 Balanus halanoides (L.). 

 Jeer a alhifrons, Leach. 

 Idotea granulosa, Rathke. 

 Carcinus mcenas (Penn.). 



iii. On Base of Ascophyllum nodosum. 

 Mytilus edulis, L. 

 Balanus halanoides (L.). 



