i 38 Peacock: Drift Shells from the River Anchohne. 



Dolichopus brevipennis. Tetanocera sylvatica. 



Syrphus latifaseiatus. Tetanocera reticulata. 



Platychirus scambus. Gymnopternus nobilitatus. 



Pipunculus penicillatus. Spilogaster communis. 



Elg"iva rufa. Tipula nigra. 



As to Orthoptera Dr. Eland Shaw reported the following- 

 species : — Forficula auricularia L., North Clifton, Notts ; Steno- 

 bothrus, sp. numerous on Newton Cliffs (Dis. 6 N. ), but too 

 immature to determine the species ; Gomphocerus, sp. probablv 

 macalata Thb., numerous in a wood near Laughterton (Div. 6 

 N. ) , immature. 



Of Neuroptera were taken : — Agrion puella, Isc/mura elegans, 

 Pa n or pa vulgaris. 



The Hemiptera taken were mostly immature, but imag'os of 

 Rhopalotomus ater were found. 



• Considering- the time spent in the field the meeting- was most 

 satisfactory. 



NOTE on LINCOLNSHIRE MOLLUSCA. 



Drift Shells from the River Ancholme, in Cadney Parish, Line. N. 



-Towards the end of February 1900 the river Ancholme was in heavy flood 

 during- mild weather. On the 28th my brother Max and I gathered the 

 following- species amongst the 'wrack' of dead herbage, seeds, etc., on 

 the east bank above the towing-path. Since the date mentioned the 

 Ancholme floods have followed frost and snow and have produced no drift 

 shells. My kind friend, Mr. John W. Taylor, named the critical species for 

 me: — Vitrina peUiicida, Hyalinia cellaria, H. nitidula, H. para. H. crystal- 

 Una, H. fulva, Helix rotundata, H. pygm&a, H. pulchclla , H. aspersa, 

 H. nemoralis, H. hortensis (two specimens only), H. arbustorum, with its 

 varieties canigonensis, fuscescens, cincta, and flavescens, H. cantiana, H. 

 rufescens, H. tiispida, H. caperaia, H. -oirgata, Clausilia bidentata , Cochli- 

 copa lubrica, Sitccinea putris, S. elegafis, CarycJiium , Platiorbis vortex, P. 

 carlfiafiis, P. umbilicatus , P. corneus, P. contortas , Physa fontinalis, Lhnncea 

 peregra, L. auricularia, L. stagnalis, L. truncatula, Velletia lacustris (on 

 caddis cases), Vivipara contecta, Bythinia tentdculata, B. leachii, Valvata 

 piscinalis, V. crista ta. Single valves of U?iio pictorum, Auodouta anatiria, 

 and Dreissensia polymorpha had been thrown upon the drift by the upcast 

 of the undertow, with single or double valves of Sphceriion corneum, S. 

 lacustre, Pisidium amniciim , P. fonfinale, and P. pusillum. 



This is 47 species. H. nitida, found at Cadney. was not taken, nor 

 H. acideata. H. itala, which is in the watershed at Kirtdn, was absent 

 with B. obscurus from the same spot. Pupa cyli 'ndracea , Cadney, and 

 P. muscoram , South Kelsev, too. Clausilia bidoiiata I have never seen 

 except in the drift in this watershed, though it is common enough at 

 Scawby and Bottesford. In the former place C. lamitiata is common too. 

 Aplexa hypnorum is found at Cadnev, and Neritinu plentifully in the river 

 where I was gathering, but neither were seen. I cannot help being- 

 persuaded that the late Thomas Ball took A. auatiua for A. cygnca, and 

 confounded the two Viviparcr. This seems strange, too, for he records 

 'two or three Pisidia,' and Mr. Tavlor has named three species from the 

 river here. I wish I knew. his localities — for instance, I have not yet met 

 with Planoxbis spirorbis in the Ancholme watershed. — E. Adrian YVood- 

 rcffe-Peacock. Cadney, Brigg, rst January \qo2. 



Naturalist. 



