298 



MOLLUSCA AT BRAFFERTON. 



W. DENISON ROEBUCK, F.L.S. 

 Leeds. 



Ox the recent excursion of the Yorkshire Natiu-ahsts' 

 Union at Brafferton, the ^Conchological section was 

 represented by its President. Mr. W. Harrison Hutton, 

 and one of the secretaries (the present writer), who 

 worked a hne of country extending from Brafferton to 

 Boroughbridge across the battle-field of 13 19 on Ellingthorpe 

 Ings) called the ' White Battle ' or ' Chapter of Myton ' from 

 the number of white-robed ecclesiastics who fought on the 

 English side). Leaving Brafferton Station, while still in 

 Yorkshire N.E., dead specimens of Helix hortensis and some 

 H. rufescens var. alhocincta on dandelion flowers were found. 

 Crossing the river into Yorkshu'e N.W., a log of wood at 

 Thornton Bridge House swarmed with H. rotundata in all 

 stages of growth, accompanied by several H. hispida, and one 

 Anon suhfuscus. Near by, Agriolimax agrestis was abundant, 

 in company w^ith Avion circumscriptus. Taking the road to the 

 south, "^Limncea truncatula was very common in a ditch or 

 ' slack ' in a field by the roadside. At the turn of the road, 

 on banks covered with luxuriant vegetation, a number of 

 H. hortensis var. lutea 00000 and 12345 occurred, along with 

 numerous beetles (Chrysomela polita). At a farm called Treble 

 Syke, a large shallowrpond filled with an aquatic Ranunculus 

 in abundant white flower, and swarming with tadpoles, yielded 

 a few examples of Planorbis contortus. Further south, ditches 

 in the hedge bottoms yielded a few Limncea peregva and L. 

 truncatula, and Pisidia. The three-spined Stickleback 

 was also abundant. In a belt of planting leading 

 eastward to the Swale, Zonites alliarius occurred. The 

 way now led along the windings of the Swale, which was a 

 turbulent, swift, and muddy stream in flood. Numerous slugs 

 occurred, including both forms of ^Agriolimax agrestis, Arion 

 circiimscriptus, and examples of "^A. suhfuscus and juvenile 

 ater, one "^Agriolimax IcBvis, and several examples of 

 "^Succinea putris. The rest of the way, past the bridge leading 

 to Myton and across the battlefield, was absolutely un- 

 productive. 



The way to Boroughbridge Station led alongside the left 



Naturaii^L, 



