SAINT HELENA. 655 



yhell ; bad he said ' the smaller variety of the Pupa umbilicata, 

 Drap., known as the P. anconostoma^ he would have been 

 nearer the truth. 



Genus 9. ACHATINA, Lam. 



(§ Acicula, Risso.) 



Achatina Veru. 



Achatina Veru, Bens., Ann. Nat. Hist, xviii. 435 (1856) 

 „ „ Pfeijf., Mon. Hel. iv. 615 (1859) 



Habitat humidos in inferioribus insulse ; in horto publico ad 

 Jamestown, una cum Stenogyra coinpressilahri, Kens., a cl. 

 E. L. Layard semel lecta. 



A single example of this little Achatina was found by Mr. 

 E. L. Layard in the public garden at the entrance to Jamestown, 

 in company with the Helix pulchella, Miill., and the Steno- 

 gyra compressilabris, Bens. ; and it is far from unlikely that 

 both species may have been accidentally imported into the 

 island, along with consignments of plants, and subsequently 

 become naturalized. It appears to belong to the same type as 

 the European A. acicula, Miill. (found equally in the Madeiran 

 and Canarian archipelagos), and the A. spiculum, Bens. {= A. 

 amoenitatuvi, Dohrn), from the Cape Verdes. Mr. Benson, in 

 his remarks on the A . Vertc, says : ' It is deficient in the lucid 

 transparency and the peculiar slenderness of the A. spiculum. 

 The proportions of these two shells [i.e. the A. spiculum and 

 the A. Veru'] differ from those of their allies, the A. acicula 

 and the A. Hohemvarti, — neither of which can compete with 

 the former two in slenderness.' The extreme length of the ^I. 

 Veru seems to be about 2 lines. 



Fam. 3. SUCCINEID^. 

 Genus 10. SUCCINEA, Drap. 



Succinea Sanctse-Helense. 



Helisiga St. Helense, Lesson, Voy. Coq. ii. (1) 316. t. 15. 



f. 1 (1830) 

 Succinea St. Helente, Pfeif., Symb. ii. 132 (1842) 

 „ Ld., Mon. Hel. ii. 518 (1848) 



Helisiga Sanctse-Helense, Melliss, St. Hel. 119. pi. 22. f. 1 



(1875) 



Habitat in regionibus elevatis insulse, ad folia Compositarum 

 arborescentium copiosissime adha;reus. 



