30 HULL SCIENTIFIC AND FIELD NATURALISTS CLUB. 



Sunk Island, Patrington Haven, Skeffling, etc. ; but no 

 favourable hunting-ground is to be found in the bend to the 

 east of Sunk Island, where the work of reclamation is still 

 proceeding. At Skeffling, however, a sloping bank has been 

 built at high water mark, of closely packed boulders which 

 are said to have been obtained from the ruins of the formerly 

 adjacent Burstall Priory. Here is found a third anemone, 

 living between the boulders or on small stones in the mud; 

 in the latter situation the stone is sometimes two inches 

 below the surface, and the tentacles just project, somewhat 

 resembling the syphon of a mollusc. I thought at first that 

 it was a form of Sagartia troglodytes but Mr. Alexander Gray 

 considers it a variety of S. nivea. Its height when expanded 

 is \-\\ inches, breadth of column three-quarters of an inch, 

 white with a light brown tinge at the top of the column and 

 on the disc; when retracted, brownish with a white base, 

 showing opaque white lines extending to the top in young 

 specimens, and ending about half way up in older ones; 

 tentacles, long, translucent, with two opaque white rings 

 near the base ; disc, with a ring of white spots, alternately 

 round and linear; two white radii, forming with the mouth 

 a white line extending right across the disc ; suckers at top 

 of column. In captivity they have lost the brownish tinge, 

 and are pure white when expanded and somewhat greenish 

 when retracted. I have not seen any acontia emitted. In 

 the white spots and radii they agree with the troglodytes 

 figured by Gosse, PI. iii. Fig. 2. The same form may be 

 found in small numbers at Stone Creek, and on the Den, 

 at Spurn. 



From Skeffling to Spurn, Obelia gelatinosa and Gonothyrcea 

 loveni occur on all the stones near high water mark and at the 

 roots of Zostera in the pools in such profusion that one 

 despairs of ever finding anything else. Campanularia 

 angulata may be secured by gathering the Zostera leaves, 

 and probably other species will reward anyone who examines 

 the Zostera pools more carefully than I have been able to do. 

 From Skeffling Mya arenaria, Scrobieularia piperata, and 

 the cockle are common, and Paludestriiia stagnalis is present 

 in millions ; from Welwick to Spurn undoubtedly forms the 

 headquarters of this species on the north shore of the 

 Humber. 



The Den, the reputed site of Ravenser, furnishes the 

 only group of stones on the north shore of the Humber, 

 between Hull and Spurn, which has not been deposited by 

 human agency, and from its proximity to the open sea 



