A nglo- Norman Islands. 353 



Gasteropoda. 



Patella vulgata, Linn. Lacuna pallidula, DC. 



Helcium pellucidum, Linn. Littoriua obtiisata, Linn. 



Tectura virgioea, xyiilU. rudis, Mat. 



Emarginella fissura, Linn. Rissoa parva, DC. 



Fissurella grseca, Linn. ciugillus, Mont. 



Calyptraea chinensis, Linn. cancellata, DC. 



Trochus magus, Linn. Odostomia lactea, Linn. 



cinerarius, Linn. Natica catenata, DC. 



umbilicatus, Monf. Purpura lapillus, Linn. 



striatus, Linn. Murex erinaceus, Linn. 



exasperatus, Penn. Lachesis minima, Mont. 



zizyphinus, Linn. Nassa incrassata, Strom. 



turaidus, Mont. Cyprspa europjea, Mont. 



Phasiauella puUa, Linn. Dentalium tareutiuum, Lam, 

 Lacuna divaricata, Fab. 



LamellibrancMata. 



Anomia ephippium, Linn. Oardium fasciatura, Mont. 



Pecten pusio, Linn. nodosum, Turt. 



varius, Linn. edule, Linyi. 



opercularis, Linn, norvegicum, Sp. 



Nucula nucleus, Linn. Venus exoleta, Linn. 



Pectuuculus glycymeris, Linn. casina, Linn. 



Area lactea, Linn. verrucosa, Linn. 



tetragona, Poli. ovata, Penn. 



Lucina borealis, Linn. Lima hians, Omel. 



A careful examination would no doubt enable many other 

 species to be recognized. 



The group of animals living in these sands constitutes a 

 very interesting fauna. 



Tlie Actinia are represented by Bunodes gemmacea, 8a- 

 gariia hellis, and Peachia undata^ Grosse. This last species 

 is known to be rather scarce. The figure of it given by 

 Gosse is unsatisfactory, but the species from Herm is easily 

 characterized by its five-lobed conchula and by its tentacles 

 presenting circular bands. The largest specimens may attain 

 a length of nearly 8 inches, with a thickness of from 1 to 1^ 

 inch. The integuments present a fine rose-colour with spots 

 of brick-red. The Peachia buries itself very deeply in the 

 sand. To obtain it the hole indicating its presence must be 

 sought on the beach and the spade pushed in quickly, so as 

 not to give the animal time to retire lower down. The 

 Peachice are associated with EdwardsicBj of which the column 

 presents a very light grey colour and delicate and transparent 

 integuments ; these Edwardsice must be referred to E. Harrassii, 

 Quatref. 



