CONCHOLOGY.— The Conchological Section will be officially represented by- 
its President (Mr. W. Harrison Ilutton), two of its Secretaries (Mr. J. F. Mushara^ 
and Mr. W. D. Roebuck, F.L.S.), and Mr. J. W. Taylor, F.L.S. 
Land and Freshwater Mollusca. — Mr. Hutton writes : — This district was 
one of the late William Nelson's favourite hunting grounds for land and freshwater 
mollusca, and members attending should be able to make good records. 
Mr. Denison Roebuck, F.L.S. , writes :— The woods, etc., and chalk-pits N,, 
E., and S., of Market Weighton, are likely to be productive and well worth 
working, and the Market Weighton Canal, the head of which is about 2 miles 
S.W., should be carefully examined, along with ponds and ditches in the same 
direction. 
Certain species have not so far been examined and authenticated from the 
East Riding, and special search should therefore be made for Milax sowerbyi^ 
Arion subfuscus^ Hyaliftia helvetica, Zonitoides excava>iuSy Acanthinula aculeata^ 
(the discovery of this latter species would be most opportune, as it is one of the 
group now being worked up for the next part of Mr. Taylor's fine Monograph), 
Hygromia fusca, Sphyraditim edenlulum, various species of Vertigo, Cacilioides 
acicula, Poviadas elcgans, Acicula litieata, Neritina, Sphariufu rivicola^ S, 
pallidum, Dreissena poiymorpha, etc. 
The Conchologists will either divide into two parties, one going to the Canal, 
and the other 2 miles South to Hou£;hton Hall and Sancton Woods ; or if uniting 
in one party will visit these woods and then make for the canal and home. 
Pleistocene Mollusca. — At Bealsbeck (or Bielbecks) Farm, about two miles 
S.S.W., is an interesting deposit of probably Pleistocene Age, where numerous 
species of land and freshwater mollusca specifically identical with our present fauna 
are found fossil in association with the bones of the mammoth, bison, and other 
extinct mammals. Of this, Mr, T. Sheppard gave an interesting account in the 
Naturalist. 
ENTOMOLOGY. — The Entomological Section will be officially represented. 
Lepidoptera. — Mr. R. Lacy writes that he has obtained the following species : 
Smerinthus ocellatus, Euchelia jacobcccc, Spilosoma vienthastyi, Notodonta ziczac, 
Pygdra pigra (reclusa), Odonestis Poiaioiia, Macrogaster casia^tece (arundinis)y 
BupalKS piniarius. 
Coleoptera. — The Yorkshire Coleoptera Committee will be officially repre- 
sented, 
Mr. T. Stainforth writes that, although the immediate neighbourhood of 
Market Weighton does not appear to have been much worked for the Coleoptera, 
the district is a promising one. 
Arachnida. — Mr. Stainforth writes : — Some interesting spiders were obtained 
last year in the Market Weighton district, including (new to Yorkshire) ZTrf^wm 
nava, Bl., Crustulina guttata, Wid., Agroeca p^oxijua, Camb., Oxyptila atomaria, 
Panz. Mr. G. B. Walsh, B.Sc, used to get the interesting water spider 
Atgyroneta aquatica, Latr., in the flooded marl pits of the neighbourhood. 
Trochosa picta is common in sandy places about Bielsbeck, etc. 
Some attention should be devoted to these interesting organisms. All the 
apparatus needed is a small test tube half filled with methylated spirits. 
PROGRAMME OF MEETINGS:— 
5- 15 p.m. prompt. Meat Tea, 1/6 eacli, 
6- o p.m.. Sectional Meetings, V At the Half Moon Inn. 
6-15 p.m. — General Meeting, ) 
Trains for Hull leave at 5-55, 7-33, and 9-0. 
,, York ,, 5-35 and 8-22. 
,, Selby and Leeds leave at 5-25, 6-2, and 8-7. 
In order that an early account of the excursion may appear in the " Naturalist,'' 
notes and reports should be forwarded before May 15th to the Secretary of the 
Y.N.U., the Museum, Hull. 
