Hygyomia hispida. 

 Vallonia pulchella. 

 Hyalinia cellaria. 

 H. alliaria. 

 Vitrina pellucida. 

 Zua lubrica. 

 Limncea peregra. 



Naturalists at Scunthorpe. 395 



CONCHOLOGY. — Mr. W. Denison Roebuck reports that while 

 the general results of the day were disappointing, only seventeen 

 species having been found, one of them was a most important 

 discovery — Limncva glabra. This was found by Dr. Wallace, 

 in company with its usual associate, Planorbis spirorhis var. 

 rotundata, and was an addition to the faima of North Lincoln- 

 shire, the only previous record for the county having been in 

 South Lincolnshire. It had long been expected to occur, con- 

 sidering that it exists in various Yorkshire localities, even 

 ^lose to Lincolnshire.' The other species found were : — 



Avion ater. 

 A. minimus. 

 A. hortensis. 

 Agriolimax agrestis. 

 Helix aspersa. 

 H. nemoralis. 

 Helicella cantiana. 

 H. caperata. 



Botany. — The botanists were led by the Rev. E. Adrian 

 Woodruffe Peacock, who writes that the course taken rewarded 

 the study given to the ground, which, before the iron was 

 worked, was remarkably rich. In all, 132 species of flowering 

 plants, horsetails and ferns were observed, and their associa- 

 tions and frequency noted. 



The sand flora of the exploited iron-stone pits was first 

 ■:studied. They gave nothing very interesting : — Carex arenaria, 

 <Centaurium umhellatum, Cerastium arvense, still rarely in flower, 

 Erigeron acre, Oenothera odorata, local and in masses, and 

 Senecio sylvaticus var. typica and auriciilatus. Sisymbrium 

 Sophia was in two forms. 



The as yet untouched moorland flora, from which the pits 

 have been evolved, has been much influenced by the constant 

 pumping from the iron pits. Cerastium arvense was not as 

 common there as in the iron pits. Galea psis tetrahit only by 

 ditches ; Fragaria vesca on the higher ground, rare. Galium 

 .^axatile was galled by Cecidomyia galii, Hypericum humifusum, 

 sporadic and rare ; Narthecium local and still in flower ; Leon- 

 .todon hirtum rare ; Ornithopus perpusillus local and very rare ; 

 .Sagina ciliata was most curiously varied with S. procumbens ; 

 Viola riviniana was known by its seeds. 



The damp spots, flashes and shallow ponds h'ing on the 

 Lower Lias Clay supplied the most interesting combinations of 

 the day. Betula glntinosa is here only found when the soil 

 is wet. Calamagrostis epigeios is still commtMi. Chciu^podiuni 



1910 Nov. I. 



