CONCHOLOGICAL NOTES FROM THE NeIGHBOQEHOOD OF HaTFIELD 



Chase. - -The following notes refer to two days' collecting in the low-lying 

 country a little south of Hatfield Chase, and near the junction of the 

 counties of York, Nottingham, and Lincoln, The first was on the 14th 

 April, the second on 14th of May, starting in each case from Finningley 

 station. In April, Mr. W. Eagle Clarke and Mr. W. Denison Roebuck 

 took the Wroot road ; in the JSTottinghamshire portion of it nothing was 

 found in the roadside ditches but Fisidium pvsillum, Planorbi^ sjrirorhis, 

 and Limncea i^eregra, all in abundance. Crossing the border into York- 

 shire the two latter species were still in abundance, and with them were- 

 associated in equal plenty Pisidium nitidum and Limncea tnincatula. 

 Soon was reached where the Gravel Drain (apparently so named from the 

 nature of its bottom) crosses the boundary separating Yorkshire from 

 Lincolnshire. While investigating it. Clarke had the satisfaction of re- 

 establishing the claim of Paludina conteda (apparently now extinct in 

 its former localities) to rank as a Yorkshire mollusc. He found a speci- 

 men floating on the surface down the drain, the water of which flows 

 from west to east. He also obtained here Limncea stagnalis, and hia 

 companion obtained Valvata L. peregra, Physa fontincdis, and 



Planorhis vorttx. Crossing here into Lincolnshire, and investigating the 

 ditches bordering Sampson's lane, Bythinia tentacidata, Limncea peregra, 

 L. pcdnstris, Planorhis carinatus, PL contortus, PI. vortex, and Physa 

 fontincdis occurred plentifully, being encrusted with a ferruginous deposit 

 at one portion of the ditch. A quantity of debris collected about the piles 

 supporting Candy Hall Bridge, on the Black Bank Drain, produced 

 Valvata pisciiialis, Bythinia tentacidata, L. peregra, Planorhis contortns, 

 P. albus, Physa fontincdis. and a solitary land-shell, Zonites nitidus. 

 Examining the Black Bank Drain itself was disappointing, and the ditch 

 which runs parallel with it, and at the foot of the embankment was found 

 to be very much more productive, yielding numerous species in 

 abundance, including V. piscincdis, B. tentacidata, B. Leachii, L. 

 peregra, L. jjalustris, Ph. carinatus, and Physa fontincdis plentifally, 

 together with a few specimens of Sj'jhceiium corneiim and Limncea stagncdis. 

 The examxination of the Yorkshire portion of the same line of ditches 

 produced the same collection of species, with the exception of L. pcdnstris, 

 and L. stagnalis, and also added four more species of Planorhis — 

 P. alhus (a few), P. cornens (local, and very young), P. vortex and 

 P. contortus {in plenty) . This finished the day's investigation, and the 

 walk to Doncaster was productive of nothing but Lirnax agrestis near 

 Cantley, and Limnoea peregra, the only inmates of an apparently 

 promising ditch on the race course (recently cleaned out, a thing repug- 

 nant to all naturalists, especially when applied to localities for Melicerta 

 ringens and other interesting forms of life, as in this case). The INIay 



