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MARINE BIOLOGY AT SCARBOROUGH. 
JOHN IRVING, M.D., 
Scarborough, 
IN anticipation of the visit of the Marine Biological Committee 
of the Yorkshire Naturalists’ Union to Scarborough, September 
22-26, an outline of the rocks, with a few notes upon the dis- 
tribution of the fauna, may interest members unacquainted with 
the locality. The diagrammatic sketch of exposures, to be 
found at extreme low tides, roughly indicates centres of practical 
importance. Concentration upon the laminarian zone will 
probably yield good results to a diligent worker, but he must 
keep his eyes open to the vagaries of a swiftly inflowing tide. 
Obviously ‘ finds,’ 7.e., new records for the district, are more 
likely to be obtained in the neighbourhood of the laminaria 
ESS 
CLAYS TONGS = 
aS H 
——— = OUGH — 
r ae ary SCARBOR 
Rocks uncovered at low tide - 
+ pied 
Diagrammatic Sketch of Exposures. 
than at higher levels. On July 28th, at the point marked (3) 
on the map, I picked up a beautiful specimen of the Crested 
Eolis, Antiopa cristata, a deep-sea form not included in the 
Yorkshire list of nudibranchs. _Subaqueous rock-ledges, whose 
undersides are often covered with living organisms and may 
harbour some rare species, should be detached by hammer and 
chisel for close examination. Large, partially propped up, 
stones in pools frequently exhibit special forms of life attached 
to their under surfaces when turned over by a crowbar. 
Although the three bays have much in common, South 
Bay, with its wide expanse of sheltered rocks and pools, 1s 
the easiest to work. Sandstone and grey limestone rocks, 
much bored by Pholas crispata, are readily broken up horizon- 
tally into layers, by hammer and chisel, thus exposing many 
holes, empty, or tenanted by the original borer, tapes, cave 
anemones, or worms. Perhaps the best South Bay region is (3) 
Tour: Septi Tesi: ; 
