CANARIAN GROUP. 445 



lection at the British Museum, but the species which it repre- 

 sents is certaiuly not referable (as Webb and Berthelot appear 

 to have supposed) to the B. pupa, Linn., of southern Europe, — 

 Sicilian examples of which I possess in tolerable abundance ; for, 

 apart from numerous other differences, its aperture has no indi- 

 cation whatsoever of the coarse and elevated tooth-like callosity 

 which gives so marked a character to the ventral paries of that 

 species, near to the insertion of its upper lip. Nevertheless, inde- 

 pendently of this very important distinction, it seems to belong- 

 to much the same gToup as the B. Consecoanus, — its relatively 

 small, short, and narrow aperture, in conjunction with its solid 

 substance, coarsely but irregularly striated surface, and pale, 

 somewhat cinereous hue (which, however, in this particular 

 species, shades-off gradually into a clear reddish-yellow towards 

 the apex of the shell), implying an unmistakeable amount of 

 affinity with that (very much larger) Gomeran Bulimus. No 

 precise island having been cited for it either by Webb and Ber- 

 thelot or by d'Orbigny, one cannot feel altogether satisfied that 

 it may not have been introduced (like so many of Webb's species) 

 into the Canarian catalogue on evidence which is not trustworthy ; 

 nevertheless since it certainly is not identical with the B. pupa 

 of Mediterranean latitudes, and it would appear prima facie to 

 have a certain relationship with the B. Consecoanus, I hardly 

 see that we should be justified in refusing it admission into the 

 fauna ; and more particularly so, as I have not been able to 

 affiiliate it with any known member of the genus from any other 

 country.' 



Genus 11. STENOGYRA, Shuttl. 



Stenogyra decollata. 



Helix decollata, Linn., Syst. Nat. (edit. 10), 773 (1758) 



' Before leaving the Biilimi of this archipelago, I may just call attention 

 to the B. Terveriaiius, W. et B. (= B. scalarioides. Reeve), — a Mogador 

 species which was cited by Webb and Berthelot {Syn. 326), and subsequently 

 by d'Orbigny, as Canarian. Original examples which are in tlie British 

 •Museum, and which are still labelled as Canarian, shew its affinities to be 

 altogether remote from everything in these islands, — its very acutely, strongly, 

 and regularly, but remotely, ribbed surface giving it a character peculiarly 

 its own ; yet even Pfeiffer does not appear to have found out until the pub- 

 lication of the 8th volume of his Monograph, during the present year, that it 

 belongs in reality to the fauna of Morocco, and not to that of the Canaries. 

 However, it supplies another instance of the incautious and reckless manner 

 in which Webb accepted as ' Canarian,' without enquiry, almost everything 

 that was sent to him as such, — even from such collectors as M. Tervex, of 

 Lyons, whose researches amongst the consignments of dried orchil, the 

 origin of which was invariably obscure and often entirely unknown) have 

 added so much confusion on the subject of geograi^hical distribution that it 

 is extremely doiibtful whether the mischief will ever be completely neu- 

 tralized. 



