THE MARINE FAUNA OF THE HUMBER DISTRICT. 29 



anglers, but there is no creek, unless they refer to the narrow 

 bay which is left at low water between Foulholme Sand and 

 the mainland, and into which this bank extends across the 

 foreshore of Cherry Cob Sands. My first acquaintance with . 

 its inhabitants was made on a fishing - expedition, when I 

 hauled up a fine specimen of Tealia crassiconu's which seized 

 the bait and allowed itself to be torn off the rock rather than 

 relinquish its meal. At spring tides, crass of all the colours 

 of the rainbow may be seen in abundance, many over three 

 inches in diameter, and often surrounded by rejected shells of 

 Tell inn tenuis; Tubular ia indivisa clothes the lowest stones 

 with pink blossoms and overshadows its more beautiful 

 companion, Obelia gelatinosa ; pycnogonids feed on the 

 crass or sprawl amongst the Tubularia; and the stems of the 

 latter are covered with Clytia Johusto/ii, Farella repens, 

 Pedicellina and Coryne. The scale worm, Lepidonotus 

 squamatus, is fairly common; Amphitrite johnstoni rears its 

 thick mud tube between the stones ; and the surface of every 

 block bristles with the projecting galleries of Polvdora ciliata. 

 Altogether, we add some thirty species to our list from little 

 more than half as many square yards. 



Another anemone occurs here, always on the under sur- 

 face of the larger blocks, and often so flattened that it seems 

 merely a brown blotch on the stone. When expanded, the 

 column is i-ih inches in height and half-an-inch in breadth, 

 smooth, rich reddish brown, very mutable, capable of con- 

 striction in any part, no warts ; tentacles, long but not fully 

 expanded except in the dark, dusky, with a white ring near 

 the tip ; generally half expanded, with the disc thrown into 

 six lobes like fringed petals just projecting over the edge of 

 the column; margin of column entire, no moulding; base 

 usually expanded ; acontia, thick, long, white, emitted freely. 

 Mr. Alexander Gray agrees in considering it a form of the 

 daisy anemone, Sagartia bell is. 



The crass occurs again on the western bank of Stone 

 Creek, and in greater profusion on the first bank on Sunk 

 Island. This does not run out as far as the one at Well 

 Creek and is therefore not as productive, but the proximity of 

 Sunk Island Sand alters the character of the mud, and we find 

 here the western limit of the lugworm, Arenicola marina, 

 and the "white cat," Xephthys longisetosa. Campanularia 

 flexuosa occurs here, and Obelia gelatinosa attains a length 

 of eight inches. 



The change in the character of the shore is evident from 

 the fact that shrimping with " push-nets " is practised from 



