Mr. E. Duprey on Jersey Littoral Shells, 339 



its upper or flat valve, and had been the means of its being 

 dragged by the tide many hundred yards, to the place where it 

 lay. The "roots" of the Laminaria sheltered a Pecten varius 

 and several small crabs ; and a young Anomia and small flat Tuni- 

 cata were fijsied on the lower valve. 



Mytilus edulis, L. Rather small and not gregarious. Lines of 

 increase quite distinct. 



barbatus, L. Generally of a bluish colour, sometimes purple. 



adriaticus, Lam. In pebbly ground these rather thin shells 



fasten together the surrounding small stones, as if for protection. 



Modiolarla discors, L. 



Niicida nucleus, L. 



Pectuncidus glycymeris, L. Common, but rather small, being seldom 

 more than 1^ inch in diameter. At very low tides I have seen 

 this edible species picked up by hundreds. On emerging from the 

 sandy gravel it does not leap like a Cardium, but crawls slowly, 

 leaving a small furrow behind. White specimens are rare, also 

 pinkish or mauve- coloured ones. 



Area lactea, L. Under stones, and once with Rissoa lactea rather 

 deeply buried. 



tetragona, Poli. 



Lascea rubra, Mont. 



, var. pallida. 



Loripes lacteus, L. 



Lucina borealis, L. Small. 



Axhms JleA'uosus,M.ont. Dead shells only ; separate valves rather 

 common in St. Aubin's Bay. 



Diplodonta rotundata, Mont. One valve only. 



Cardium echinatmn, L. Very fine specimens with spines perfect, in 

 muddy sand in St. Aubin's Bay at low water of equinoctial spring- 

 tides. Like many other bivalves they emerge out of the sand 

 when the tide begins to rise. I believe they come out more 

 numerously when a bright sun warms the surface ; but if a heavy 

 shower happen to fall, few, if any, will appear. 



tuberculatum, L. Living with the preceding some years ago 



(Mr. Piquet) ; lately I have found only dead shells, but fresh- 

 looking. 



exiguum, Gmelin. 



nodosum, Turt. Gregarious in sand, the white, the yellow, 



and the pink living together. 

 -, var. rosea, Lam. 



— edule, L. 



— norvegicum, Spengl. Of a light colour at La Kocque in shelly 

 gravel ; dark olive in muddy sand in St. Aubin's Bay. 



-, var. pallida. 



Astarte triangularis, Mont. Gregarious in fine shelly gravel at low 



water of spring-tides. 

 Circe minima, Mont. Valves only. 

 Venus exoleta, L. 

 fasciata. Da Coata. 



