REPORT ON THE VERMES. 149 



ton ; by the latter as being found commensal on Astroj^ecten 

 irregularis {Asterias aurantiaca of Forbes) from Southport. 



Harmothoe haliceti, Mcintosh. 

 This species was first dredged in fifty-three fathoms in 

 the Minch by Dr. Gwyn Jeffreys, and afterwards during the 

 " Knight Errant " Expedition in the Faroe Channel. 

 Mcintosh describes and figures the species in the Trans. 

 Zool. Soc. (loc. cit.), and the body and scales in the " Chal- 

 lenger " Keport (p. 96). Unfortunately the scales in the 

 specimen obtained by the L. M. B. C. were absent; the 

 spines, position of the eyes, and cirri, however, agree with 

 Mcintosh's account. The specimen was found at Port Erin, 

 Isle of Man, in about fifteen fathoms water. It was about 

 20 mm. in length. It is not recorded by Byerley. 



Harmothoe imbricata, Linnaeus. 

 A large number of examples of this form were found 

 under stones, and on rocks and loose stones, covered with 

 seaweed, and also abundantly in rock pools. They were 

 most plentiful at low water-mark. Most of the specimens 

 were obtained at Bay ny Carrickey, between Port St. Mary 

 and Poyllvaaish, Isle of Man. A few were also obtained 

 from Hilbre and the Anglesea coast. Probably this is the 

 Polynoe cirrata of Byerley's and Carrington's lists. The 

 latter mentions them as '' very rare " ; that may, no doubt, 

 be explained by their preferring a rocky shore. 



Malmgrenia castanea, Mcintosh. 

 This rather rare species, which has not been previously 

 recorded as having been observed on this coast, was found as 

 a commensal in the ambulacral groove of AstroiJecten irregu- 

 laris, between the rows of pedicels. The head of the worm 

 was level with the peristome. It has been dredged by Gwyn 

 Jeffreys off North Unst, Shetland, in ninety to ninety-six 

 fathoms, in 1867, and again in 1868, as a commensal near 



