424 TEST ACE A ATLANTIC A. 



valde elongato-conica, anfractibus 8, minus convexis, apertura 

 submagis obliqua, peristomate etiam sublatius expanse ; lineis 

 spiralibus (tamen minutissimis) interduni magis distinctis. 

 Long. lin. 6-J 7 ; diam. maj. 2. 



Bulimus rupicola, W. et B., in litt. 



,, variatus (pars), d'Orb., in W. et B. Hist. 71 (1839) 

 Buliminus rupicola, Mouss. [nee rupicolus, Reeve, = varie- 

 gatus, Pfeiff.], Faun. Mai. des Can. 

 104 (1872) 

 Bulimus rupicola, Pfeiff., Mon. Hel. viii. 89 (1876) 



Habitat Gromeram ; juxta Hermigua, et recens et semifos- 

 silis, a Bevdo. R. T. Lowe copiosissime reperta. 



This Bulimus might well be looked upon as an insular mo- 

 dification peculiar to Gromera of the Palman B. encaustus, with 

 which it agrees in the character of its similarly decorated sur- 

 face ; nevertheless if the B. myosotis and encaustus are to be 

 treated as specifically distinct from the variatus (and not as 

 Grand-Canarian and Palman phases of that shell), it seems to 

 me that it would be inconsistent not to cite the B. rupicola 

 as a species of equal importance and attached to Gromera ; and 

 I have therefore followed Mousson in so regarding it. 



Although coinciding with the encaustus in its beautifully 

 ornamented surface (in which the white portions, on the average, 

 very much preponderate over the brown), the B. rupicola is 

 nevertheless longer and slenderer than that species, its spire 

 being more drawn-out and conical, with the seventh (or apical) 

 whorl more distinctly expressed. Its volutions are appreciably 

 less convex ; its aperture is (if anything) a trifle longer and 

 more oblique, with the peristome very broadly expanded ; and 

 its minute spiral lines are usually somewhat more traceable. 



The B. rupicola was taken in great profusion by Mr. Lowe, 

 near Hermigua, on the western side of Gromera ; and, out of 

 many hundred examples which I have overhauled, a considerable 

 proportion seem to be in a subfossilized (or, at any rate, in a 

 very ancient and bleached) condition ; and, from being filled 

 almost invariably with a fine and loose friable soil, they have every 

 appearance of having been long embedded in a kind of superfi- 

 cial earthy deposit. The specimens, moreover, which are thus 

 circumstanced are more or less white and decorticated. 



Bulimus ocellatus, 



T, auguste rimata, elongato-ovata, solida, nitida, parum dis- 

 tinct e irregulariter striatula, albida sed apicem versus necnon in 

 maculis perpaucis irregularibus pallide flavo-cornea ; anfracti- 



