242 THE AMPHINOMID/E, APHRODITID/E, POLYNOID.E, AND SIGALIONIDyE 



I have not been able to ascertain from the writings of various 

 authors whether the worm exists in a free state or not, but Mcintosh 

 (20) quotes it as having been found on Astropeden irregularis by 

 Prof. Harvey Gibson and Mr. Hornell in the Liverpool district. 



Localities. 



Plymouth : Mewstone Grounds, Whitsand Bay, Stoke Point. 



St. Peter Port, Guernsey . ... Mcintosh (20). 



St. Vaast . . Dredgings . . . de St. -Joseph (32). 



*Gattyana cirrosa, Pallas. 



This species is perhaps better known under its older name of 

 Nychia, which has been relegated to obscurity by Mcintosh. 



It is a fairly common species in the vicinity of Plymouth. It is 

 found in the dredge material from the Eddystone grounds in a manner 

 which, if it does not occur free, does not indicate a very close relation 

 between it and its host. At Salcombe it has recently been taken in 

 some numbers in the tubes of Amijhitrite Johnstoni. It is essentially a 

 commensal, and has been found in the tubes of Chcctopterus variopedatus 

 (Baird, fide Mcintosh, 20; Hornell, 15); Thelepus cincinnatus 

 (Hornell, 15) ; Amphitrite figulus (Dalyell, 20). Malaquiu describes a 

 definite variety from the tubes of Chcdopterus on the Cotes du Boulonnais. 

 Pruvot records it only from the zostera region, where the bottom 



is sandy. 



Localities. 



Plymouth : Mewstone, Eddystone, Yealm (with Amphitrite Johnstoni, R. A. T.). 



Salcombe 



South Devon 



Herm, Channel Islands 



Cotes du Boulonnais 



Dinard 



St. Malo 



Cotes de Bretagne 



St. Vaast 



Commensal 

 Johnstoni 



with Amphitrite 



Chcetopterus tubes 

 Chcetoptterus tube . 



Johnston (16). 

 Mcintosh (20). 

 Malaquin (21). 

 de St. -Joseph (31). 

 Grube (12). 

 Pruvot (29). 

 Grube (14). 



Mcintosh records 



*HARMOTHOifi marphys^, Mclntosli. 



This species is not yet known from the Plymouth district, though 

 its host, Marpthysa sanguinca, is fairly common, 

 it from the Cornish coast. 



Localities. 



, Chinks in rocks . . . Mcintosh (20). 



. Galleries of M. sanguinea . Mc Intosh (20). 



. Cotes du Boulonnais . . Malaquin (21). 



Polperro 

 Guernsey 

 Roche Bernard 



