152 PROCEEDINGS OF SOCIETIES. 



Inachus Dorsettensis. — Common. s 



Inachus dorynehus. — Common. 



Pisa tetraodon. — Roundstone. 



Jlyas araneus. — Very common, littoral. 



Hyas coarctatus. — Common, a deep-sea species, occurs from ten fa- 

 thoms downwards. 



Maia squinado. — Yery common, deep sea. 



Eurynome aspera. — Common in suitable localities. 



Xantha florida. — Yery common ; the unicoloured variety just as com- 

 mon as that with black-tipped claws. 



Xantho rivulosa. — Rare, two specimens only have occurred among 

 dozens of X. florida, Galway Bay. 



Cancer pagurus. — Common, but does not attain anything like the 

 same dimensions here as on the eastern coasts, and is also much inferior 

 as an article of food. 



Pilumnus hirtellus. — Common. 



Pirimela denticulata. — Rare. Roundstone. 



Carcinus mcenas. — Common. 



Portumnus variegatus. — Carapaces of this species occur, rarely, in 

 Galway Bay ; — I have not succeeded in finding the animal itself. 



Portunus puber. — Common. 



P. corrugatus. — Common. 



P. arcuatus. — Very common. 



P. depurator. — Very common. 



P. marmoreus. — Roundstone, 1850. 



P. pusillus. — Common. 



Pinnotheres pisum. — Very common in Mytili and Cardium edule. 



Gonoplax angulatus. — Rare. Roundstone, 1850. 



Ebalia Pennantii. — Common. 



E. Bryerii. — Common. 



E. Cranchii. — Common. 



Atelecyclus heterodon. — Common. 



Corystes Cassivelaunus. — Common. 



Thia polita. — Galway Bay, by digging; of this interesting species 

 I have obtained specimens each year since my first discovery of it here 

 in 1850; three were obtained in March last (1857), two of which are 

 at present alive with me. It is exceedingly local. 



Pagurus Bernhardus. — Very common. 



P. Cuanensis. — Common. 



P. Ulidianus. — Common. 



P. Hyndmanni. — Common. 



P. Icevis. — Common. 



P. Forbesii. — Rare. This species was obtained in 60 fathoms water 

 off the south isle of Arran, its first record on the Irish shores. 



Porcellana platycheles. — Yery common. 



P. longicornis. — Very common. 



Galathea squamifera. — Rare. 



O. strigosa — Rare. 



