x PREFATORY REMARKS. 



Hyalina osoriensis . . Canaries 



Mellissii . . .St. Helena 



Patula garachicoensis . Canaries 



Helix (Iberus) forensis . . Madeiras 



(Leptaxis) subroseotincta . Cape Verdes 



(Macularia) gibbosobasalis ". Canaries 



(Hemicycla) vermiplicata , '%-' , Canaries 



granomalleata . Canaries 



nivarise . . Canaries 



(Gronostoma) crispo-lanata ; Canaries 



beata . . Canaries 



gomerse . . Canaries 



(Hystricella) echinoderrna . Madeiras 



Leacockiana Madeiras 



(Coronaria) Grabhami . Madeiras 



(Lemniscia) Watsoniana . Canaries 



Bulimus palmensis . . . Canaries 



osorien-is . ' . . Canaries 



chrysaloides \ . Canaries 



interpunctatus 'V-. . Canaries 



Lowei . . . Canaries 



savinosa . . ; Canaries 



Subulina melanioides . . St. Helena 



Pupa Loweana . . . Madeiras 



corneocostata . . * Madeiras 



relevata . . . Madeiras 



degenerata, W. . . Madeiras 



Lovea iridescens, W. . . Madeiras 



Auricula Watsoni, W. . . Salvages. 



Throughout the various local catalogues (given at the end 

 of each respective section) I have prefixed an asterisk (*) to 

 those species which have been found likewise in a subfossil con- 

 dition ; and when the name is also in italics, it implies that the 

 particular species has hitherto been met with only subfossilized, 

 in which case, until evidence to the contrary has been ad- 

 duced, the latter must be regarded practically as extinct. 



As a matter of generalization, however, it is only in the 

 Madeiran list that I would place any reliance on the conclu- 



