240 THE AMPHINOMID.E, APHRODITID^, PoLYXOIDyE, AND SIGALIONID.E 



* Hermione hystrix, Savigny. 



Eather common. It occurs chiefly on the gravel grounds in the 

 neighbourhood of the Eddystone at a depth of about 30 fathoms. 



Mcintosh (20) records it as partial to shell debris, gravel, and similar 

 regions, while Pruvot (29) finds it on the coast of Brittany in the 

 littoral zone. In the middle (Himanthalia) region of this zone it 

 occurs among seaweed on a sandy bottom, and lower down it lives 

 on a coarse sand, passing to fine sand at greater depths. 



Localities. 



Plymouth : Stoke Point ; Mewstone Ledge ; Rame Head, 3 miles S.W. ; 3-6 miles 

 S.W. (R. A. T.) ; Penlee, 5 miles S.W. (R. A. T.). 



Eddystone IX., X. 

 St. Peter Port, Guernsey 

 Cotes du Boulonnais . 

 Dinard 



Baie de Cancale 

 lies Chausey 



Cotes de Bretagne 



Coarse gravel witli sand or mud. 



Shell-gravel, etc. 



Dredgings 



Common enough on the shore 

 and at extreme low tide, and 

 in dredgings at all depths 



On oyster beds . 



Among seaweeds on a muddy 

 bottom, exposed only at the 

 very lowest tides 



Allen (1). 

 Mcintosh (20). 

 A. Malaquin (21). 



de St. -Joseph (31). 

 Audouin and Milne- 

 Edwards (2). 



Audouin and Milne- 

 Edwards (2). 

 Pruvot (29). 



* Lepidonotus squamatus, Linn. 



This is one of the most abundant species, and occurs everywhere and 

 in all situations from between tidemarks to deep water. 



It is not infrequent on the shore under stones, and occurs in the 

 holes and crevices of stones brought up by the dredge, as well as in 

 the miscellaneous collection of material which includes Chcetopterus 

 tubes and a varied assortment of Hydroids and Polyzoa from all parts 

 visited by the Association. 



Mobius, writing with reference to the North Sea, gives as its habitat 

 stones, sand, and shells ; sandy mud ; sand with small stones and shells ; 

 dead zostera (27) ; red algte ; stones, sand, and red algse (Baltic) (26). 



Pruvot (29) confines it to tidal waters at all levels, and the laminarian 

 zone on stony ground of various kinds. 



Localities. 

 Plymouth : Area general. 

 Eddystone Grounds . Fine sand ; coarse gravel with 



sand or mud ; fine gravel ; 



shell-gravel ; stones . . Allen (1). 



Salcombe . . Coralline region . . Parfitt (28). 



Falmouth, South Devon, Weymouth . . . Johnston (16). 



