REPORT ON THE VERMES. 157 



at Hilbre and other places on the coast. Tubes were also 

 dredged in Hilbre Swash, and trawled in eight fathoms 

 water off the Great Ormes Head. Very large beds are also to 

 be found near the Lighthouse, at Fleetwood. Its geological 

 significance has been referred to by Herdman.* 



It is recorded by Byerley as being very abundant at New 

 Brighton, Caldy Blacks, and Hilbre. 



Carrington also mentions it under the synonym of S. 

 anglica, as being parasitic on the whelk and other shells. 



Sabellaria crassissimciy Lamarck. 

 "Rare" (Carrington). 



Sabella unispira, Savigny (?). 

 The worm recorded as Sabellaria unispira by Byerley, is 

 probably Sahella unispira of Savigny, and as such is marked 

 " a doubtful species " in the Brit. Assoc. List, 1860, and 

 does not appear in subsequent lists. 



Family.— Amphictenid^. 

 Pectinaria helgica, Pallas. 

 Recorded by Carrington. 



This species was dredged in six to seven fathoms on a 

 sandy bottom from the west end of Constable Bank, Llan- 

 dudno ; from a gravel bottom in twenty fathoms at Port 

 Erin, Isle of Man ; and at low water, in great abundance, on 

 Waterloo shore. 



Pectinaria auricoma, 0. F. Muller. 



This is the Amphitrite auricoma of Byerley's list. 



These two forms seem to be in want of re-description 

 in order to decide whether there are any real points of 

 distinction. t Many empty tubes were obtained which might 

 have belonged to this species, but no live forms were obtained 

 in the collection of the L. M. B. C. 



• Froc. Geol. Soc. Liverpool, Sess. 1884-5. 

 t See separate Paper on this subject further on in this volume. 



