PENN : MOLLUSCA OF MERIONETHSHIRE. 1 99 



L. agrestis L. Only in one place near Dolgelly. Very pale, 



approaching var. albida. 

 L. arborum B.-Ch. Common in similar position to Z. ^r/^^/w- 



niger. 

 Zonites cellarius (Miill). Bont-ddu. 

 Z. alliarius (Miller). Dolgelly, 

 Z. alliarius var. viridula Jeffr. Bont-ddu. 

 Z. glaber (Stud.). Bont-ddu. 

 Z. purus var. margaritacea Jeff. Dolgelly. 

 Z. radiatulus (Alder). Dolgelly. 

 Z. excavatus (Bean). Bont-ddu. 

 Z. excavatus var. vitrina (Fer.). Dolgelly. 

 Z. crystallinus (Miill.). Dolgelly. 

 Helix aspersa Miill. Very common. 

 H. nemoralis L. Two specimens only. Type. 

 H. rufescens Penn. Near Barmouth. Spire rather produced. 

 H. rotundata Miill. Very common. 

 Ciausilia rugosa (Drap.). Dolgelly. 

 Cochlicopa lubrica Mull. Near Barmouth. 



A peculiarity of the Arions which I dissected is that the 

 rudimentary shell, instead of being composed of a few irregular 

 granules, consisted of an even layer of calcareous matter spread 

 over the interior of the shield in the same form as the shell of 

 Liniax maximus. I do not know whether this is of common 

 occurrence, but I have never observed it before in any specimens 

 from the home counties that have come under my notice. 



Zonites fulvus re-discovered in its ancient 

 locality in Lincolnshire. — On the 4th of June inst. I col- 

 lected Zonites fulvus in Burwell Wood, near Louth, where its 

 occurrence is chiefly interesting as confirming the record by 

 Dr. Martin Lister at page 123 of his " Historiae Animalium 

 Angliae," dated 1678. Cydostoma elegans, which was recorded 

 for Burwell Wood in the same work, has also been re-discovered, 

 see "Naturalist," 1886, p. 347. — H. Wallis Kew, Louth, 

 Lincolnshire, loth June, 1887. 



