42 DUBLIN NATURAL HISTORY SOCIETY. 



Gonoplax angulatus. — Rare. Roundstonc, 1850. 



Ehalia Pennantii. — Common. 



E. Bryerii. — Common. 



E, Cranckii. — Common. 



Atelecyclm heterodon. — Common. 



Corystes Casstvelaunus. — Common. 



Thiapolita. — Gal way 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. Uyndmanni. — Common. 



P. l(Bvu. — Common. 



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

 off the south isle of Arran, its fu-st record on the Irish shores. 



Porcellana platycheles. — Yery common. 



P. longicornis. — ^^''erj'- common. 



Galathea squamifera. — Rare. 



G. strigosa — Rare. 



Munida Rondeletii. — Galway, rare. 



PaUnurus vulga/ris. — My experience of the occurrence of this species 

 would lead me to believe it rare here. 



Astacus Jluviatilis. — Rivers, common. 



Homarm vulga/ris. — Very common. 



Nephrops Norvegicus. — Rare. 



Crangon vulgaris. — Common, local. 



C. fasciatus. — Isle of Arran, rare. 



C. spinosus. — Isle of Arran, rare. 



C. sculptus. — Isle of Arran, rare. 



C. bispinosus. — Arran. This species, now first added to the Irish 

 list, and of extreme rarity in Britain, was established by Hailstone on 

 the authority of a single specimen ; several specimens occurred to me, 

 and there can be no doubt of its specific distinction from C. trispinosus, 



Alpheus ruber. — Isle of Arran, 60 fathoms. This species is now 

 first added to the Irish list ; the specimen is partictilarly interesting as 

 having been obtained in dredging. British specimens heretofore recorded 

 were all obtained from the stomachs of fishes. 



Nika edulis. — Roundstone, rare. 



Athanas nitescens. — Ballyvaughan, county of Clare. Under stones 

 between tide-marks ; common, but local. 



Hippolyte varians. — Rare. 



JI. Cranchii. — Common. 



JI. Mitchelli. — Rare ; its first record as Irish ; this specimen was 

 obtained by me in 1850, and then laid aside as nondescript; it has 

 since been described from Weymouth under the above name by "W. 

 Thompson. 



