MASSY ; MOLLUSCA AND BRACHIOPODA OF IRISH ATLANTIC SLOPE. 51 



Cuspidaria lamellosa (M. Sais).— S.R. 489, one; S.R. 752, 

 three. 



Siphonodentalium lobatum Sowerby.— S.R. 85 1, three. (The 

 name of 6". vitrenm M. Sars has been altered by Pilsbry and Sharp on 

 account of the existence of the fossil species Dentalium vitrenm Gmel. ). 



Solariella ottoi (Phil.).— C X X, two. 



Natica nana MoUer.— S.R. 944, two shells. (Compared in 

 British Museum with Finmark specimens). 



Tritonofusus ebur (Morch).— S.R. 188, shell. 



Bela ovalis (Friele).— S.R. 401, shell; S.R. 1242, shell: S.R. 

 1454, two shells. (The specimen from S.R. 401 was compared with 

 British Museum examples). 



Bela cirrata Brug. (Mbrchi Malm).— S.R. 590, one and two 

 shells ; S.R. 752, five. 



Mangilia packardi (Verrill).— S.R. 486, shell; S.R. 752, one. 



Actaeon exilis Jeff.— S.R. 5, three shells [N.] ; S.R. 172, three 

 shells; S.R. 331, shell ; S.R. 486, shell; S.R. 590, eight shells; 

 S.R. 752, one and three shells. 



Brachiopoda : — 



Platydia anomioides Scacchi.— S.R. 353, three ; S.R. 504, 

 nineteen front Lophohelin. 



Helicella caperata and H. g-igaxii climbing trees. — One day in August, 

 19 1 5, I was collecting in the beech-wood which covers one side of Westwell Beacon, 

 in E. Kent, when I was surprised to see H. caperata and H. gigaxii in large 

 numbers climbing the trunks of the beeches to a height of quite ten feet from the 

 ground. The nearer the top of the Beacon the fewer became the specimens ; but 

 even there they were climbing the trees to a considerable height. Though I have 

 collected in this wood before, I have not noticed these species in it at any other 

 time. From these two facts I conclude that they must have come from a chalk lane 

 at the bottom of the Beacon. They were also climbing the trunks of the pines, of 

 which there are a few scattered about in the wood. Quite a large number of the 

 ciiterata were of the var. ornata. The proportion of caperata \o gigaxii \\2& about 

 3 to I. In June, 1915, I observed a few examples of H. caperata climbing the 

 trunks of the beeches in Darklane Copse, Bradfield, Berks. ; but they were never 

 more than four feet from the ground. But on no other occasions have I heard of 

 these species climbing trees. Presumably they find some favourite food on the 

 trunks. For at Westwell eight other species of the mollusca climb the beeches ; 

 and I have known H. nenioralis ascend there to a height of fifty feet. — A. J. 

 Arkell [Read before the Society, Nov. loth, 1915). 



