Field Meetings, 1910. 233 
following moths new to the district were taken :—Crambus hamellus, 
Rhacodia caudana and Pedisca solandriana. 
Among the Orthoptera taken by Mr. Bayford were :— 
Forficula auriculavia, L., Stauroderus bicolor, Charp., and Gomphocerus 
maculatus, Thunb. 
As to Conchology Mr. W. Denison Roebuck stated that the 
general results of the day were disappointing, only seventeen 
species having been found, but one of them was a most important 
discovery—Limnea glabra. This was found by Dr. Wallace, in 
company with its usual associate Planorbis spivorbis var. votundata, 
and was an addition to the fauna of North Lincolnshire, the only 
previous record for the county having been in South Lincolnshire. 
The botanists were led by the Rev. E. Adrian Woodruffe- 
Peacock, who writes that the course taken rewarded the study 
given to the ground. In all, 132 species of flowering plants, 
horsetails and ferns were observed, and their associations and 
frequency noted. 
The sand flora of the exploited iron-stone pits yielded nothing 
‘very interesting. 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. Cevastium arvense Was 
not so common there as in the iron pits. Galeopsis tetvahit only by 
ditches ; Fragraria vesca on the higher ground, rare ; Galium saxattle 
was galled by Cecidomyia galit ; Hypericum humifusum, sporadic and 
rare ; Narthecium local and still in flower ; Leontodon hivtum rare ; 
Ornithopus perpusillus local and very rare ; Sagina ciliata was most 
curiously mixed with S. procumbens ; Viola Riviniana was known by 
its seeds. 
The damp spots, flashes and shallow ponds lying on the 
Lower Lias Clay supplied the most interesting combinations of 
the day. Betula glutinosa is here only found when the soil is wet. 
Later work on the Limnea glabra flash, carried out by Mr. W. 
Denison Roebuck and some friends revealed the fact that there 
were still new species to be found in the county. Pilularia 
globulifeva was sent to me among other plants from this flash, and 
a Nitella, the specimen was very poor, and may turn out to be 
flexilis, and, if $0, a new record for the county. Truly of botany it 
