54 



TEST ACE A ATLANTIC A. 



Miguel, and Fayal, amongst dead leaves in wooded spots of a 

 rather high altitude. In the Canarian archipelago I have taken 

 this very minute shell abundantly, in similar situations, both 

 in Teneriffe and Palma, but always in the dampest places. 

 Indeed it was usually to be met with about the fronds and roots 

 of ferns which were kept in a constant state of douche by the 

 spray of the waterfalls ; and I think therefore that Mousson must 

 have fallen into some strange error, in his ' Faune Malacolo- 

 gique des Canaries,' when he states, apparently on the authority 

 of Blauner, that it lives c sous les pierres dans les lieux arides.' 

 Indeed this modus vivendi is absolutely disproved by his own 

 assertion that it exists in company with the Hyalina Clymene, 

 Shuttl., and the Pupa castanea ; for the only spot in which 

 those two species have ever been observed together (indeed the 

 only one in which the former of them has hitherto been found 

 at all) are some trickling rocks, adjoining a small waterfall, be- 

 twesn the little town of Grarachico and Ycod de los Vinhos, in 

 the north of Teneriffe, where they are associated likewise with 

 the Ancylus striatus, Q. et Gr., and the Physa acuta, Drap. I 

 suspect, therefore, that the sylvan localities at the Azores in 

 which the H. gutta is to be met with are, as at the Canaries, at 

 any rate damp ones. 



AZOREAN CATALOGUE. 



