Falconer : Diplocephalus spinosus in S. W. Yorkshire. 207 



Helix pygmsea. Probably common, but from its small size 

 easily overlooked. I have found it at Cusworth, Scaw- 

 thorpe, and Edlington. 



Helix pulchella. Very local, but common where it occurs : 

 Cusworth, Adwick-le-Street, and Scawthorpe. 



Var. costata. This I have only found at . Adwick-le-Street, 

 where it occurs along- with the type, but not commonly. 



Buliminus obscurus. Rare, but widely distributed over the 

 limestone. I never find more than one or two specimens. 

 These have occurred at Marr, Edlington, and Sprotborough. 



Pupa umbilicata. Very local, but frequently abundant : Wad- 

 worth, Loversal, Adwick-le-Street, Cusworth, etc. 



Vertigo pygmsea. Widely distributed, but only abundant 

 locally. Its chief station is in a somewhat dry quarry at 

 Pickburn. Other stations are Loversal and Adwick-le-Street. , 



Clausilia bidentata ( = rugosa). Very common all over the 

 limestone. All our specimens appear to belong to the small 

 form known as var. everetti. 



Clausilia laminata. Very local. It used to be abundant on 

 the bark of a felled Ash at Sprotborough. Some years ago 

 the trunk was moved, and since then I have failed to find 

 it in that locality. It is fairly common and very fine in 

 Edlington W T ood. 



Cochlicopa lubrica. Very common over the limestone, and 

 occurring sparingly also at Wheatley on sand. 



Var. lubricoides. Commoner than the type. 



Carychium minimum. Very common on damp logs on the 

 limestone, and occasionally found on sand at Wheatley, etc. 



NOTE on SPIDERS. 



Diplocephalus spinosus (sp. nov. ?) in South-West Yorkshire.— 



No less than twelve males' of the Spider described in 'The Naturalist,' 

 December 1901, as D. spinosus sp. nov. occurred to me during the past 

 year in the neighbourhood of Slaithwaite. It is not, however, a goo J 

 species in the opinion of our leading English authority (Rev. O. Pickard 

 Cambridge), and, on reconsideration, not even in that of its author himself. 

 It does not specifically differ from, but is a strongly-marked form of, 

 D. permixtus Cb., having three spines, instead of the more usual two spines, 

 on the radial joint of the male palpus. In the collection of the former 

 gentleman is an example having three radial spines on one palpus, and two 

 radial spines on the other. All the D. permixtus Cb. I have collected here 

 are of the more robust spinosus form. — Wm. Falconer, Bank Field, 

 Slaithwaite, Huddersfield, 12th February 1902. 



1902 June 1 



