108 TEST ACE A ATLANTIC A. 



high). It is the state which the shell assumes par excellence on. 

 the Southern Deserta (or Bugio), where it swarms ; but which 

 also makes its appearance at a spot called the Feijaa Grande, 

 towards the southern end of the Deserta Grande. Apart from 

 its increased bulk, it is a coarsely malleated form, rather globose 

 in outline, and of a pale yellowish-brown with the bands often a 

 good deal interrupted, or broken-up. Although generally free 

 from a rosy tinge (except now and then, indistinctly, about the 

 peristome), it is on the average of a just appreciably warmer 

 tint than the (somewhat smaller and less globose) '7. adven- 

 oides.' This aspect of the shell, which however has clearly no 

 claim for anything more than varietal separation, was described 

 by Mr. Lowe, in 1852, under the name H. hycena, as specifi- 

 cally distinct. 



( Pomatia, Beck.) 



Helix aspersa. 



Helix aspersa, Mutt., 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) 

 Watson, Journ. de Conch. 222 (1876) 



Habitat Maderam ; in hortis circa Funchal parcissime occu- 

 rens, nuper ex alienis introducta. 



This common European Helix, which has established itself 

 in the Azorean Group and in the island of Palma at the Cana- 

 ries, and which has likewise been naturalized even at St. Helena, 

 occurs very sparingly in Madeira proper, namely in certain of 

 the gardens around Funchal, where it has been introduced, 

 within a comparatively few years, from more northern latitudes. 

 Although of course totally unconnected with the true Madeiran 

 fauna, it can scarcely be omitted from our catalogue, which 

 contains, of necessity, like most local lists, a -certain modicum 

 of species which were manifestly, and without doubt, originally, 

 but imported ones. 



Helix subplicata. 



Helix subplicata, Sow., Zool. Journ. i. 56. t. 3. f. 1 (1824) 

 Lowe, Cambr. Phil. S. Trans, iv. 41. t. 5. 



f. 4(1831) 



Pfeiff., Mon. Hel. i. 24 (1848) 



Lowe, Proc. Zool. Soc. Lond. 171 (1854) 



Alb., Mai Mad. 52. 1. 14. f. 10-12 (1854) 



Paiva, Mon. Moll. Mad. 72 (1867) 



Habitat ins. parvum ' Ilheo de Baixo,' juxta Portum 



