442 TEST ACE A ATLANTIC A. 



The three examples from which I have compiled the above 

 diagnosis were all of them taken by Mr. Lowe, two (which I 

 have regarded as typical of the species), on the 20th of April 

 1858, towards Savinosa, in the forest district of El Grolfo, on the 

 western side of Hierro ; and the other (the ' var. @. inflatius- 

 culus ' of the present enumeration,' and which may perhaps 

 represent in reality a closely-allied species), on the 21st of 

 April 1861, on a rock immediately below the Cumbre in 

 Gomera, on the mountains above San Sebastian. My own 

 belief is, that only a single species is indicated by these three 

 individuals which are now before me, the few small points of 

 difference which are displayed by the one from Gromera being 

 suggestive, as I cannot but think, of a mere race, or modifica- 

 tion, peculiar to that island ; though, at the same time, it is 

 evident that further material can alone decide this question. 



The large size, and broad, ovate, inflated outline of the B. 

 savinosa, added to the prominent, subpapilliform apex of its 

 spire (the volutions of which are a good deal flattened), its wide 

 aperture, and acute, broadly-expanded peristome (the margins 

 of which are far apart, and well-nigh unconnected by an inter- 

 vening lamina), will sufficiently characterize it. Its surface is 

 rather glossy and simply striated (except on the subapical 

 whorls, where the striae are more or less broken-up and obsoletely 

 granulose) ; its columella is broad, short, and rather sinuated ; 

 and its colour is a pale olivaceo-corneous. 



The single Gromeran example which is now before me (em- 

 bodying the ' var. /3. inflatiusculus ' of the above diagnosis), 

 and which is somewhat worn and decorticated, has only 7 whorls 

 instead of 8, and the volutions of its spire are not so completely 

 flattened as in the Hierro ones. Its aperture, too, is, if any- 

 thing, a trifle longer ; its peristome (the margins of which, are 

 not quite so far apart, and are more evidently joined by a thin 

 intervening lamina) is less broadly expanded and less acute; 

 and its columella, as seen internally, is not quite so widely de- 

 veloped. 



Bulimus Consecoanus, 



T. (magna) minute rimata, fere subclausa, elongate ovato- 

 conica, solida, opaca, insequaliter plicato-striata (striis hinc inde, 

 sed prsesertim in anfr. intermediis, punctato- et subgranuloso- 

 confuse fractis), vel plumbeo- vel flavescenti-cornea strigisque 

 (vel albidis vel flavo-albidis) valde irregularibus et plus minus 

 confluentibus obscure ornata ; spira elongate., conica, apice acuto, 

 prominulo-subpapilliformi ; anfractibus 9, planiusculis, sutura 



