Sectional Officers’ Reports. 311 
Mr. W. Denison Roebuck and Mr. John F. Musham have 
continued their systematic investigation of the least worked 
areas, having visited districts 5 E., 16 S. W., and 18 E. 
In district 5 East, worked from Kirton Lindsey, search was 
made—and with success—for Pyvamidula vupestvis at Norton 
Place, where it was discovered by Mr. John Beaulah more than 
thirty years ago—and more than 20 species were also added to 
the list for that area. 
In district 16 S.W. about the same number were also 
added to the list, including Hyalinia helvetica, which is by no 
means so widely distributed as its allies. 
In district 18 E. circumstances were so unfavourable that 
mollusca were only found with difficulty on the right bank of the 
mouth of the River Nene at Wingland, which was the main 
object of research, that no additions were made, and this division, 
along with the neighbouring areas of 18 Mid, and 18 West, are 
the least productive in Lincolnshire, none of them having on 
record so far, a molluscan fauna of more than 27 species, as 
against the average for the whole county of 52 species per area, 
and totals of 83 each for districts 8 South and 13 West, which, 
however, have had the advantage of being investigated by 
competent resident workers. 
Nothing much has been done at the Excursions, owing 
to the extremely dry weather and the limited time available. 
Of other work we learn that A zeca tvidens has been turned 
up in a new locality, near Market Rasen. 
For the future, the officers of the Section would be glad 
of any assistance from members, particularly in securing 
examples of the large bivalves which can be more readily 
secured when the waters are low, as they have been of late. 
Photographs of characteristic localities etc., are desired for the 
little volume on Lincolnshire land and fresh water mollusca 
which is in course of preparation. 
As to Marine mollusca, Mr. Arthur Smith reports that 
the excursion to Gibraltar Point yielded some 40 to 50 species, 
3 of which were new to the County records. 
