CANARIAN GROUP. 315 



(which he did not seem to recognize was one and the same 

 thing with the Teneriffce) to the latter. 



Vitrina canariensis. 



Vitrina canariensis, Mouss., Faun. Mai. des Can. 12. pi. 1. 



f. 10-12 (1872) 

 „ „ Pfeiff., Mon. Hel. vii. 19 (1876) 



Habitat Teneriffam (?), Palmam (?), et Hierro; in locis 

 similibus ac prsecedens. 



This is a smaller or more rounded, or globose, shell than the 

 V. Lamarckii, with the nucleus a little more prominent, or less 

 depressed, and the columellary border of the aperture furnished 

 with a narrower membrane. I met with it sparingly in Hierro ; 

 and although Mousson records it from both Teneriffe and 

 Palma, on the authority of specimens supposed to have been 

 taken by myself, I cannot but think that he has fallen into 

 some error as regards his habitats, for it seems to me that my 

 examples from at all events the latter of those two islands 

 belong in reality to the V. latebasis, whilst those from the 

 former are anything but typical ones. Mousson speaks of the 

 V. canariensis as the commonest, and most widely spread, of 

 all the Vitrinas in this archipelago (' la plus repandue de 

 toutes ') ; but certainly that is not in accordance with my own 

 experience. 



Vitrina reticulata. 



Vitrina reticulata, Mouss., Faun. Mai. des Can. 14. pi. 1. 



f. 13-15 (1872) 

 „ „ Pfeiff., Mon. Hel. vii. 20 (1876) 



Habitat Teneriffam ; a cl. Eeiss parcissime reperta. 



This is the only Canarian Vitrina which I have not myself 

 met with ; and it is one which I have had no opportunity of 

 inspecting. It seems to be the smallest of them all, extremely 

 rare, and observed hitherto merely in Teneriffe, — in which island 

 it was found by Eeiss. The peculiarity of its sculpture would 

 appear to be its main distinctive feature : — ' Cette sculpture,' 

 says Mousson, ' tres-rare dans les Vitrines, se compose de stries 

 d'accroissement fines, mais assez prononcees, et, sous une bonne 

 loupe, de fines lignes decurrentes, qui sur le contour sont 

 presque aigues, par contre plus faibles a la base, le long de la 

 suture et vers le bord exterieur de l'ouverture.' 



Vitrina latebasis. 

 Vitrina latebasis, Mouss., Faun. Mai. des Can. 13. pi. 1. f. 



4-6 (1872) 

 „ „ Pfeiff., Mon. Hel. vii. 20 (1876) 



