254 



FIELD NOTES. 



MOLLUSCS. 



Molluscs at Tetney. — The Leeds Concholog-ical Club made 

 an excursion to Tetney Lock, Lincolnshire, on Easter Tuesday, 

 5th April, with the object of observing- Aniphipeplea giiitinosa. 

 The services of Mr. C. S. Carter, of Louth, were enlisted as 

 o-uide. Mr. Carter led the party to places which yielded the 

 following species : — LimncEa peregra, L. stagnalis, Planorbis 

 contortiis, P. vortex, P. umhilicatus, P. spii^orbis, P. corneiis, 

 Paludestrina jenkinsi, P. ulvce, Sphcerium conieum, S. laciistris, 

 Physa fontinalis, Bythinia tentaciilata, Valvata piscinalis (a few 

 dead shells), Anodonta cygnea, Helix nemoralis, H. arhiLstorum 

 (dead shells), H. caperata, H. rufescens, Pupa muscoriiin, Alexia 

 myosotis, Mactra stiiltonun, M. solida, Solen ejisisj, Tellina 

 halthica, Cardium edule, Littorina lillorea, and Amphipeplea 

 giiitinosa. Unfortunately, the dyke yielding A. giiitinosa had 

 been recently cleaned out, though evidence of the abundance 

 of freshwater moUusca was seen in the dead shells in the mud 

 thrown up on the banks, and we were fortunate to obtain a few^ 

 each which had escaped the hands of the dredg-ers. — Thomas- 

 Castle. ' 



Molluscs at Hebden Bridge. — Hebden Bridge is not a" 

 favourable district for molluscan life, and at the Yorkshire 

 Naturalists' Union excursion there on nth June conchologists 

 did not expect great things. Arriving early, the writer with 

 others first tried the canal near the station, but the result was 

 nil. Following the course of the river Hebden, in Foster's Mill 

 Dam Pisidium fontinale was found in great profusion with 

 P. pusilluni less common ; on the wall in a narrow part, of the 

 same dam Limncea peregra was secured in fair numbers, and 

 Avion circumscriptus was found in Lee Wood. In Pecket Wood 

 Mr. T. Crowther (EUand) found Vitrina pellucida (dead shells), 

 Agriolimax agrestis, Hyalinia crystallina, H. nitidula, Helix 

 hortensis (young), H. rotundata, and Cochlicopa luhrica. Mr. 

 W. Denison Roebuck (Leeds) joined the party at the Lodge, 

 and between there and the refreshment room, along the sides of 

 the stream, we found Arion niininius (which had not before been 

 recorded for the parish of Halifax), A. subfuscus, A. ater, 

 Hyalinia alliaria, H. piira, H. crystallina, and H. fulva. On the 

 return journey, near Pecket Wood, Agriolimax agrestis was 

 found in great numbers and variety along with Liniax niaxi?nus 

 and Arion hortensis ; and in the wood Hyalinia excavata and 



Naturalist, 



