REPORT ON THE VERMES. 151 



The species is worked out in detail by Bourne. * 

 Carrington {loc. cit.) mentions two varieties of this form, 



both of which occur in the collection of the L. M. B. C. 



The markings on the scales are, however, very variable. 



Hermadion assimile, Mcintosh. 

 This form was first found by Mcintosh at St. Andrews, 

 and afterwards (according to that author) " on the west coast 

 of Ireland, south of England, and off the Spanish coast in 

 the ' Porcupine ' expedition." The species is described by 

 Mcintosh in Trans. Zool. Soc. {loc. cit.) Two examples were 

 found by the L. M. B. C. They were coiled round the 

 peristome of Echinus esculentus hidden by the peristomial 

 spines. The Echinus was dredged from a gravel bottom, in 

 ten fathoms water, at Bay Fine, near Port Erin, Isle of Man. 

 The species has not been previously recorded from this coast. 

 Most of the scales fell off so soon as the animal was removed 

 from the Echinus^ otherwise both examples were very perfect 

 and agreed entirely with the characters of the species as laid 

 down by Mcintosh. t 



Family.— SiGALioNiD^ . 



Sthenelais zetlandka, Mcintosh. 

 This form, first dredged by Gwyn Jeffreys, off Shetland, 

 was met with near Port Erin. One specimen only, was 

 obtained in the dredge, in twenty fathoms of water. The 

 example from which Mcintosh described the species was a 

 fragmentary one, the anterior region being injured and the 

 head absent. His description of those parts which he was 

 able to observe tallies, however, with the specimen obtained 

 at Port Erin. The head was absent also in the Port Erin 

 specimen, and from the length of the fragments obtained 

 one being over 30 mm. long), after having been for some 



* Trans. Linn. Soc, 1883. 

 t Vid. Notes on some of the Polychceta of the L.M.B.C. District Re-port I. 



