JOURNAL OF CONCHOLOGY. 325 



P. nitidum. In four spots near Baguley Hall, all on swampy 

 ground. 



P. milium. Very fine at Hampson's Pit, measuring 3x4 mm. ; 

 also at Sale, Baguley, Northen Etchells, Baguley Hall, 

 Ashley Mill, Ashley, and Mere. 



In reviewing the list, it will be noticed that there are some 

 gaps among the land molluscs, especially as regards the Helices. 

 These are, as has been remarked, to be explained by the character 

 of the soil. H. rotundata is the only Helix which seems to 

 flourish on the Red Marl. H. nemoralis is dying out, and, 

 of the other species found, pygnuea, amleata, arbustorum, and 

 hispida are chiefly found in Cloughs, where leaves and vegetable 

 matter accumulate. H.pnlchella and/?/i-m belong to gravelly or 

 alluvial deposits, and aspersa is only found on the hill at Bowdon, 

 an isolated sand heap. Bidiminus, Pupa^ Vertigo, and Claiisilia, 

 also, are only represented m the valley of the BoUin. On 

 the other hand, we are well off in Hyalinia, both as regards the 

 number of species and frequency of individuals. Altogether, 

 while it is possible that one or more species may turn up — Helix 

 hortensis, for instance, which is found at Romiley ; Hyalinia 

 glabra, found at Marple ; Valvata c/istata, at Marbury — we 

 believe that we have worked the district fairly thoroughly, and 

 that our total of seventy-four species is practically complete. 



Hydrobia jenkinsi Smith in an inland locality.— 



While dredging in a small branch canal near Dudley, just within 

 the borders of Staffordshire, with my brother, I came across a 

 flourishing colony of Hydrobia jenkinsi. With time I could 

 have collected hundreds. They had evidently thoroughly 

 established themselves in the locality for some little time. The 

 specimens have the keel somewhat less pronounced than the 

 type. They were found in company with Planorbis nautileus 

 and PI. fontamis. — A. T. Daniel, November 28th, 1893. 



