GUDE : HELICOID SHELLS OF THE CANARIES. 



17 



Classified List of the Species of Helicoid Land-shells 

 FROM THE Canary Islands. 



Since tlie publication of Wollaston's " Testacea Atlantica" in 1878, 

 many new species have been discovered ; and, since the descriptions are 

 scattered through various publications, 1 have thought it useful to 

 append a classified list of all the Helicoid land-shells now known to be 

 comprised in the fauna. With regard to the species of Hemicycla, 

 Pilsbry's classification appears to me to be hardly satisfactory, and it is 

 notorious that some of Mabille's species arc based upon insufficient 

 characters. I have therefore endeavoured to rearrange the genus, and 

 have found it necessary to reduce certain of the species to varietal 

 rank, or to sink them as synonyms. 



The shells taken by Colonel Parry during his visits to the Islands 

 in 1887, 1893, and 1895 are marked with an asterisk. A f implies 

 that the species is subfossil ; while the islands are designated as 

 follows : — 



C. Grand Canaiy. 

 r. Fuerteventura. 

 G. Gomera. 



Gr. Graciosa. 

 H. Hierro. 

 L. Lanzarote. 



P. Palma. 

 T. Tenerife. 



YiTRiNA, Drap. 



Lamarckii, Per.— *T. P. H. 



= Teneriff(e, Quoy. 

 Canariensis, Mouss. — H. *"G. 



(? P. T.). 

 latehasis, Mouss. — ••'?. H. 

 Blmmeri, Shutt.— *'T. P. *C. 

 Parry ii n.sp — *C. 

 reticulata, Mouss. — "^'T. 

 Hyalinia, Per. 



Sect. Vitrea, Pitz. 

 crystallina, Miill. — F. *T. 



P. H. 

 vermiculum, Lowe. — *T. 



Sect. POLITA. 



cellaria, Miill.— *T. H.-^C.*P. 



var. Canarice, Mouss. 



— C. 



thetnera, Mab. — C. 



festinans, Shutt. — P. 



Osoriensis, WoU. — C. 

 Sect. Nautiltnus 



Clymene, Shutt. — *T. 

 Sect. Lyrodiscus, Pils. 

 =Zyra, Mouss. 



cireumsessa, Shutt. — *T. P. 



Rochehruni, Mab. — G. 



lenis, Shutt.— *P. H. 



vol,. II. — ArniT,, 189G. 



Janulus, Lowe. 



Fompylia, Shutt. — P. 

 Pyrajiidula, Fitz. 



Sect. Patulastra, Pfr. 

 placida, Shutt. — T. P. H. 

 = Luseana, Paiva. 

 =pusilla var. sericlna, 

 Lowe. 

 pusilla, Lowe. — T. P. H. 

 =zscrvilis, Shutt. 

 — hypocrita, Dohrn. 

 Sect. Gonyodiscus, Fitz. 



= Discus, Fitz. et Auct. 

 textilis, Shutt.— P. T. 

 Jcompsa, Mab. — H. 



= concinna, Lowe. 

 putrescens, Lowe. — P. 

 ganoda, Mab. — G. 

 Garachieoensis, Well. — T. 

 = agrcstis, Lowe. 



var. siihmarmorata, Woll. 



engonata, Shutt. — T. 

 retexta, Shutt. — P. 

 scutula, Shutt. — *T. 

 Sect. Lyrula, Woll. 

 Loweana, Woll. — L. 

 = torrefacta, Lowe. 

 =usurpans, Furt. 



