440 TEST ACE A ATLANTIC A. 



direction of El Campo, — at an elevation of about 2,000 feet ; 

 and it seems to me that it is quite impossible to affiliate 

 them with any of the species which are included in the pre- 

 sent enumeration. In general size they may be said to be 

 a little smaller than the B. obesatus of Grand Canary; but 

 their outline is nevertheless quite different, — it being blunt, 

 cylindrico-oval, and obtuse, with the apex of the spire not 

 drawn-out (or papilliform), with the volutions (although not 

 very convex) less flattened, with the suture much more horizon- 

 tal (or less obliqiie), with the columella wider and more curved, 

 and with the margins of the peristome (which is less broadly 

 expanded, and Tnore rounded, or less angulose, posteriorly) more 

 evidently joined by an intervening lamina, which is perceptibly 

 thickened (though scarcely into a decided tubercle) at the 

 upper insertion. The sculpture too is different from that of 

 the B. obesatus, — the striae, particularly on the intermediate 

 whorls, being more broken-up, and roughened, into granuli- 

 form fragments, intersected here and there by excessively 

 minute and interrupted obsolete spiral lines ; though as the 

 surface is a good deal corroded, or as it were eaten-into, this 

 character is less easy of observation. 



Bulimus Bertheloti, 



T. (magna) rimata, elongate oblongo-cylindrica, nitidiuscula, 

 levissime striatula (striis insequalibus sed fere simplicibus, et hinc 

 inde etiam obsoletis), clare albido-cornea ; spira elongata, postice 

 omnino cylindrica, apicem versus subexcavate conica, ad apicem 

 ipsum prominulo-subpapilliformi ; anfractibus 8-8|^, planis, su- 

 tura postice superficiali ; apertura subovali, peristomate albo, vix 

 late expanso, intus (prsesertim versus angulum superiorem) in- 

 crassato, marginibus subapproximatis et callo sublineari (in 

 medio seepius subevanescente, sed ad insertionem dextram in 

 tuberculum, ab angulo incise disjunctum, aucto) junctis, basali 

 cum sinistro rotundate (nee angulatim) continuo. — Long. lin. 

 10^; diam. maj. 4. 



Bulimus obesatus (pars), d'Orb., in W. et B. Hist. 68 



(1839) 

 „ Bertheloti, Pfeif., Hon. Hel. ii. 64 (1848) 



Buliminus Bevtheloti, 3Iouss., Faun. Mai. des Can. 113 



(1872) 

 Bulimus Bertheloti, Pfeiff., Mon. Hel. viii. 92 (1876) 



Habitat Gromeram, et Hierro; in declivibus saxosis paulu- 

 lum elevatis, sub lapidibus et inter rupes, parum vulgaris. 



With the exception of the (equally Gromeran) B. Consecoanus, 

 this is the largest of the Canarian Bulmii ; and although it is 



