542 TEST ACE A ATLANTIC A. 



This little European Helix, which has acquired a wide geo- 

 graphical range (having gained for itself a footing in the 

 Azorean, Madeiran, and Canarian archipelagos, and indeed 

 having been met with by the late Mr. Benson even at the Cape 

 of Good Hope), we obtained abundantly in the intermediate 

 districts of St. Helena, particularly about Plantation, in 

 Thompson's Wood, and amongst some old Gumwoods at Peak 

 Gut. It appears, however, that a single example of it was 

 found by Mr. E. L. Layard, several years ago, while halting at 

 St. Helena on his passage to southern Africa, namely (in company 

 with Stenogyra compressilabris and the Achatina Veru, Bens.) 

 in the public garden at the entrance of Jamestown. In all 

 probability the species was originally introduced into the 

 island, along perhaps with consignments of trees and plants, 

 and .has since become completely established. 



( Pomatia, Beck.) 



Helix aspersa. 



Helix aspersa, Mull., Verm. Hist. ii. 59 (1774) 

 Pfeiff., Mon. Hel. i. 241 (1848) 



Morel, Hist. Nat. des Acor. 152 (1860) 



Mouss., Faun. Mai. des Can. 69 (1872) 



Melliss, St. Hel. 120 (1875) 



Habitat in cultis intermediis ; ad Plantation, necnon in locis 

 similibus. Certe ex Europa invecta. 



The common European H. aspersa, which has become estab- 

 lished in the Azorean and Canarian archipelagos, is rather abun- 

 dant within the cultivated districts of St. Helena, more par- 

 ticularly those of an intermediate altitude. In the grounds, 

 and garden, at Plantation, we met with it in considerable 

 numbers. There can be no doubt whatever that it has been 

 naturalized accidentally in the island from more northern 

 latitudes, probably from England, along with consignments 

 of trees and plants. Be this however as it may, the species is 

 fairly now in statu naturali, being often only too destructive 

 in many of the gardens. 



Genus 5. BULIMUS, Scop. 



( Pseudachatina, Pfeiff.) 



Bulimus exulatus, 



Achatina exulata, Bens., in litt. 



Reeve, Conch. Icon. sp. 77 



Bulimus exulatus, Id., ibid. t. 78. f. 572 



