346 Hev : Sho)e-Collecting near Scarborough and Filey. 



other kind is Barnea Candida, a frail shell with the valves 

 meeting almost the whole length of the shell. 



Three limpet-shaped shells can easily be found in this zone: — 

 Helcion pelhicidum, an olive-coloured shell, with bright blue rays 

 (a most rare colour in shells), is always found on the fronds of 

 the great olive sea-weed Laminaria digitata, a plant which does 

 not grow higher than the low-water mark of neap tides. The 

 other little limpets are the two species oi AcmcBa — A. testudinalis, 

 a pretty shell marked with white and brown which is hardly 

 known south of this latitude, and A. virginea, a much smaller 

 pink-rayed species. It is common in the sort of lagoon near 

 White Nab, which, I understand, was formed by the excavation 

 of the great slabs of rock which were floated over the Bay to 

 form the outer pier. 



Another species of Chiton occurs in this zone, both in the 

 north and south bays, viz.: — Acanthochites fascicularis, easily 

 known by the bristly tufts of hair which stand up on either 

 side. 



Two crabs are conspicuous. The Edible Crab ( Cancer pagiiriis) 

 abounds, but is seldom found of any size till deeper water is 

 reached. Individuals may often be met with in dark crevices, 

 which are quite soft, having just shed their shells. 



The other very conspicuous crustacean is the Porcelain Crab, 

 a small active animal with a round carapace and one claw about 

 four times as big as the other, which gives it an exceedingly 

 ludicrous appearance. 



The very sluggish Spider Crab, Hyas aratietis, is also common 

 at Scarborough, a creature so tranquil-minded that the sea-weed 

 and small creatures of various kinds with which it clothes itself 

 in order to escape the observation of its enemies, often flourish 

 as well upon its back as upon the solid rock. 



The brittle star of this zone is Ophiocoma rosuLa. Its arms 

 writhe and twist like serpents, and upon the slightest provoca- 

 tion are flung off" in the hope that its would-be captor may 

 mistake a part for the whole, so that it is far from easy to 

 procure perfect specimens. 



I will now leave the Scarborough rocks and convey you in 

 imagination to Filey Beach, for very little is to be got on Scar- 

 borough Sands. Such shells as are dislodged in rough weather 

 doubtless get broken up for the most part upon the scars. At 

 Filey you have a long stretch of smooth sand from the Brig 

 on the north to the chalk cliff's on the south, entirely free from 

 rock. 



Naturalist, 



