180 PEOCEEDINaS OF THE MALACOLOGICAL SOCIETY. 



beetle Parnus, sp., was abundant in several of the loci. The accom- 

 panying mollusca were in all cases : — Helix aspersa, Helicella 

 virgata, H. caperata, segg.,. Agriolimace agrestis, A. Icevis, and 

 Limncea truncatula, and in two loci Succinea elegans ; all these 

 species occurred also in many places where there were no dblonga. 

 Cochlicopa luhrica also occurred freely in one locus, but it is not of 

 general occurrence. The other mollusca which were noted in 

 various parts of the flats close to but not in the oblonga areas 

 were Arion ater, Helix nemoralis, H. hortensis. LimncBa pereger, 

 Cochlicella harbara, Lauria umhilicata, Vallonia pulchella agg., 

 Hygromia hispida, Hyalinia alliaria, Carychium minimum, Succinea 

 putris, Clausilia rugosa, Vertigo moulinsiana, V. antivertigo, Pupilla 

 marginata. A. Gardiner {Journ. Conch., xvi, 1920, p. 95) found 

 oblonga especially with Scirpus holoschoenus at Braunton, an 

 association which I did not recognize. 



3. Mabgasitana maboabitifeba out op Water. 



During the past two years four attempts have been made to 

 send this species alive through the post : in each case they were 

 dead on arrival. Anodonta cygnea and Unio pictorum travel quite 

 successfully, will survive out of water for several days, and live in 

 localities which are apt to dry up. The rivers in which margaritifera 

 lives do not go dry, and the species is evidently not adapted to 

 withstand drought. 



