156 Field Meetings, 1909. 
and S. ciliata, and a stunted specimen of Verbascum thapsus. The 
old Abbey garden yielded Parietavia, A gopodium, and a fine 
Mespilus germanica. On going back to get further specimens of 
Azeca tridens which Mr. Stow had discovered, we took the rare 
hybrid grass Festuca pratensis x Lolium perenne, on low damp 
ground as usual. ) 
The Sixty-seventh Field Meeting was held on Sept. gth, 
190g, in the BOSTON District. 
This Meeting was kindly arranged by members of the 
Boston Society, several of whom conducted the Union members 
to some interesting places. 
The party went by waggonette to Fishtoft Bridge, and 
alighting, worked along Hob Hole drain and by the Witham 
back to Boston, working the drains and ditches in Fishtoft 
en route. 
The President contributes the following notes:—The Con- 
chologists present, Messrs. W. Denison Roebuck, F.L.s , 
Thomas Stow, and Arthur Smith, F.L.s., worked diligently, first 
along the west side of the Hob Hole drain from Nunn’s Bridge 
down to its confluence with the Witham, and then the road- 
side ditches in and round Fishtoft village. Of the twenty-five 
species found, the greater half (thirteen) were additional records 
for District 12, one of them—Vertigo antivertigo— quite new for 
the county of Lincoln. Of this species, a single example was 
found by Mr. Roebuck in a damp spot alongside Hob Hole 
drain, where also occurred Agviolimax levis and abundance of 
small Succinea puts and a few young examples of Vitrina pellucida. 
Near by, Mr. Stow found a Cavychium minimum, and a few 
examples of Hygr mia hispida var. sevyicea and one Hyalinia nitidula 
also occurred. In very shallow watery hollows close alongside 
the drain were numerous small Limnea peregra and Planorbis 
spivorbis and its variety Jewcostoma, a few small Aplexa hypnorum 
and a dead Bythinia tentaculata; and a shallow pond by the Coast- 
guard station, at the outlet of the drain, yielded a few Planorbis 
crista var. imbricata. Turning towards Boston, abundance of 
Paludestvina jenkinsi and one P. stagnalis were found in brackish 
water ditches alongside the Witham, and a single Pupa muscorum 
