OF PLYMOUTH AND THE ENGLISH CHANNEL. 247 



f EVARNE PENTACT^, Giard. 

 Lives on the body of Cucumaria pentades, with which holothurian it 

 is commensal. It has not been recorded from this side the Channel. 



Locality. 

 Grisnez, Wimereux . . ... Giard (9). 



*Lagisca floccosa, Savigny. 



This is one of the commonest of the local species, and may best be 

 described as having a general distribution throughout the local area. 

 It occurs between tidemarks to deep water, and under the synonym of 

 L. propinqua it is recorded from the sand and gravel of the Eddystone 

 Grounds. 



Localities. 



Plymouth : Area general. 



Eddystone Grounds . Fine sand, coarse gravel with 

 sand or mud, fine gravel, shell- 

 gravel, stones . . . Allen (1). 



South Devon . . . ... Johnston (16). 



Wimereux . . . ... Darboux (8). 



*Lagisga extenuata, Gruhe. 



Not uncommon. It occurs most frequently under the laminarian 

 roots on the Breakwater, and more rarely on the Eddystone Grounds, 

 among the Polyzoa and Chcetopterus tubes. 



Mcintosh (20) records it from the tube of a Eunice, and free on 

 muddy sand ; while Pruvot (29) gives its habitat as the Fucus zone 

 down to the base of the rocks covered with Laminaria, and with a 

 somewhat variable bottom. 



Localities. 



Plymouth : Breakwater, Eddystone Grounds. 

 Roche Bernard, Roche 



de Lineur, Cotes du 



Boulonnais . . Dredgings, especially at Platriers Malaquin (21). 



Wimereux . . . ... Darboux (8). 



Dinard . . . Dredgings . . . de St.-Joseijh (31). 



St. Vaast, St. Guenole, Croisic, St. Jean de Luz . . de St. -Joseph (32). 



Cotes de Bretagne . Littoral zone . . . Pruvot (29). 



*Lagisca rarispina, Sars. 



This species is not admitted by Mcintosh in his "Monograph of the 

 British Annelids," nor is it included amongst the synonyms. 



It appears to me to be very closely related to L. floccosa, with which 

 species I should probably have identified it, had not Prof. Weldon 

 drawn my attention to it in dealing with the Polychsetes from the 



NEW SERIES. — A'OL. VI. NO. 2. S 



