802 TEST ACE A ATLANTICA. 



Shuttleworth's H. persimilis. (11) Bulimus roccellicola, W. 

 et B. ; — certainly not distinct specifically from the B. variaius, 

 W. et B. (12) Oionella Webbi, d'Orb. ; — identical, unquestion- 

 ably, with the Bui 'mi u,8 mysofis,\\\ et B. (13) Cyclostoma 

 adjuncfot/m, Mouss. ; — not separable specifically from the G. 

 canariense, d'Orb., of which it constitutes one of the many 

 insular races. And (14) Physa ventricosa, Mouss. ; — a mere 

 phasis, I think, of the P. acuta, Drap. 



The species which I have myself added to the Canarian 

 catalogue, but which are not included in Mousson's work 

 (though two of them, the Helix planaria and Bulimus pal- 

 mensis, are treated by him as ' vars.'), are the following twenty- 

 one: — (1) Hyalina osoriensis, Woll.; a strongly defined 

 member, from a high elevation in Grand Canary, of Mousson's 

 section ' Lyra,'' yet certainly not belonging to the genus Patula 

 (as the closely allied circumsessa, Shuttl., was erroneously sup- 

 posed to be by him), but to Hyalina. (2) Patula garachi- 

 coensis, Woll. ; — discovered by Mr. Lowe near Garachico in the 

 north of Teneriffe, and quite distinct from everything else which 

 has been acknowledged as Canarian. (3) Helix gibboso-basalis, 

 Woll. ; — allied to the H. lactea, Mull., but, I believe, truly dis- 

 tinct: from the collection of M. Vargas, and found in the north 

 of Teneriffe. (4, 5) Helix vermiplicata, Woll., and H. grano- 

 malleata, "Woll. ; two rather large Helices, of the Hemicycla 

 section, detected in Palma. (6) Helix nivarice, Woll.; — a 

 species, both recent and subfossilized, of the H. malleata type, 

 occurring in the north of Teneriffe. (7) Helix apicina, Lam. ; 

 — two examples of which were lately met with in Teneriffe, 

 during the expedition of H.M.S. ' Challenger.' (8) Helix cris- 

 polanata, Woll. ; — a remarkably pilose species, of the Gonostoma 

 section, from Palma. (9) Helix beata, Woll.; likewise of the 

 Gonostoma group, and from Fuerteventura, but nearly related to 

 the Teneriffan H. fortunata, Shuttl. (10) Helix planaria,, 

 Lam. ; — treated by Mousson and others as a Teneriffan state of 

 the H. afficta, Fer., of Palma, but which I believe to possess a 

 greater claim for specific separation than most of its immediate 

 allies. (11) Helix Gomerce, Woll. ; — detected both in a sub- 

 fossil and semi-recent condition in Gromera, and a good deal 

 akin to (though perfectly distinct from) the H. discobolus, 

 Shuttl., of that same island. (12) Helix Watsoniana, Woll. ; 

 - — a rather obscure little species, from Grand Canary and Tene- 

 riffe, of the Lemniscia group. (13-18) Six Bulimi, — the B. 

 palmensis, osoriensis, chrysaloides, interpunctatus, Lowei, 

 and savinosa, — of which the first is from Palma, the second, 

 third, and fourth are from Grand Canary, the fifth is from Tene- 

 riffe, and the last is from Gomera and Hierro. (19) Lovea 



