134 DUBLIN NATURAL HISTORY SOClEXr. 



PorcelUo scaber. — Common everywhere. Dublin. 



Porcellio pictus. — Carrickfergus ; Blackhead; Crawfordsbum. Dublin. 



PorcelUo Icevts. — Rare ; Carrickfergus. Dublin. 



Oniscus murarius. — Common everywhere. Dublin. 



Oniscus fossor. — Common everywhere. Dublin. 



Philoscia muscorum. — Carrickfergus; Crawfordsbum. Dublin. 



Philougi^'a riparia Carrickfergus ; "Whitehead ; Crawfordsbum. Dub- 

 lin. 



Ligia oceanica. — More local than in Dublin ; rare about Carrickfergus ; 

 extremely common at Crawfordsbum. 



Armadillium vulgare. — Common everywhere. Dublin. 



The following species has not as yet been met in Belfast : — 



Apseudes ialpa. — Sandycove, county of Dublin, in sand-pools, 1857. 



The strange admixture of northern and southern forms exhibited by 

 these lists is too strongly marked to require more than a passing notice. 

 I hope to return to the subject at some future meeting. 



The President remarked on the importance of the critical study of 

 species in various localities. He had no doubt, from his own hurried 

 researches in the west, that many species yet remained unnoticed. As 

 he saw that the Society to-night was honoured by the presence of Mr. 

 Edward Waller, he hoped that that gentleman would favour the Meet- 

 ing with his view on the subject-matter of the communication just read, 

 as he believed Mr. Waller had been engaged in researches in the same 

 district. 



Mr. Edward Waller said that as the President had called on him, 

 he would state that during the researches of the Belfast Committee, in 

 which he had been associated with Mr. Robert Patterson, Mr. HjTidman, 

 Professor Dickie, and others, the results obtained were confirmatory of 

 the remarks made in the paper just read. 



Of the shell Odostomia conspicua, previous to the Belfast specimens, 

 but one perfect specimen had been found ; the Belfast specimens were 

 submitted to Mr. Alder, the gentleman who first named this species, and 

 all the shells included in the list, on his authority, had been submitted 

 to Mr, Alder and Mr. Gwyn Jeffreys for their opinion, and there couJd 

 be no doubt that both South British and Lusitanian forms occuiTed here. 



There was another set of shells on which he would make a few re- 

 marks. During the past year ten species had occurred to them dead, 

 which they had not succeeded in obtaining living, although the dredg- 

 ing researches had been carried on nearly half way across the Channel, 

 and in both shallow water and up to the depth of 110 fathoms. These 

 species were northern species, and, owing to the difficulty of account- 

 ing for the non- occurrence of the living animals, perhaps it was safer 

 to look on them as Pleistocene, though he must say that the shells were 

 just as fresh as the specimens of species still living. Large Pleistocene 

 deposits occur in the neighbourhood, but he should mention that none 

 of these disputed species were as yet recorded as found in them. All 



