2605 
YORKSHIRE NATURALISTS AT MALTON. 
(Continued from page 236). 
COLEOPTERA.—Dr. Fordham writes :—Little was done by 
the coleopterists present (Mr. M.L. Thompson and Dr, Fordham) 
but 32 species were obtained near the lower end of Crambe 
Beck. The majority of these were common species but the 
following deserve mention :—Anacena globulus Pk., Tachyusa 
flavitarsis Sahl., Stenus impressus Germ. and_ nitidiusculus 
Steph., Quedius scintillans Gr. (a rare species in Yorkshire), 
Lathrimeum atrocephalum Gyll., Tychus niger Pk., Trichopteryx 
sp. (?), Barynotus merens F., and an interesting variety of 
Liosoma deflexum Pz., (=ovatulum Clair) approaching the var. 
collaris Rye., but of a uniformly reddish colour and structually 
slightly different from the type. The majority of the beetles 
taken were obtained under stones by the Beck or in the lux- 
uriant growth of moss on the ground in the wooded parts. 
ConcHOLOGY.—Mr. Thomas Castle writes :— 
The recent flooded state of the River Derwent, together 
with the check upon the vegetation upon its margins, had the 
effect of restricting the numbers of fresh-water species. The 
rainfall during the visit to the woods at Castle Howard, made 
observations difficult and the list is far from complete in 
consequence, but ideal places abound for a fully representative 
number of woodland species. The services of Mr. C. C. Laver- 
ack have been secured towards making out a complete record 
of the mollusca of the district. 
Our genial host, Mr. A. H. Taylor, informed me that a 
conchologist once residing in Malton had commissioned his 
children to collect about 10,000 shells of Helix nemoralis in 
the district, with the view of securing specimens of six banded 
varieties, but of this variety only two were obtained, one now 
being in the local museum and the other in the British museum. 
This fact indicates that the geological formation of the district 
is conducive to molluscan life. 
Several fossil representatives of this order, but of marine 
origin, were met with in a gravel pit near the Electric Power 
Station. They are worthy of note as possibly indicating the 
beds from which the material was brought down by the glacial 
rivers, and the suggestion is offered that the specimens should 
be correlated by an expert. 
FRESH WATER SHELLS. 
Anodonta cygnea faethe by Mr. Wattam from Scampston 
»: tumidus Lake. 
Limnea stagnalis shown by Mr. Laverack from River Derwent. 
,  peregra River Derwent and three small ponds. 
»  truncatula b 
a) ” 
1916 Aug. 1. 

