236 CANARY ISLAND FERUSSACLE. 



compressed. Aperture vertical (5 degrees with the axis), not 

 over one-third the total length, inversely piriform, acutely 

 angular above, less so below. Peristome unexpanded thick- 

 ened, broadly labiate, yellow outside, opaque, margins joined 

 by a subcallous layer ; right margin thinner above, then con- 

 vexly thickened within, broadly arcuately produced below, 

 subangular at junction with the oblique columellar margin 

 within. Columellar margin subtuberculate calloused below, 

 with a reflexed callus minutely impressed in the region of the 

 perforation. Columella somewhat excavated, long, the trun- 

 cation obsolete. Length 10, diam. 2.7 mm. (Mouss.) 



Canary Is.: Lanzarote, under stones on the ridges above 

 Haria. 



Cionella lanzarotensis Mouss., Rev. fauna Malac. Canaries, 

 p. 133, pi. 6, f. 28, 29 (1875). PFR., Novit. Conch, p. 110, 

 pi. 125, f. 28, 29. Loved 1., WOLLASTON Testae. Atlant. p. 

 460, with var. tumidula. 



"Judging from a long array of examples which are now 

 before me, this beautiful and rather large Lovea (which meas- 

 ured from about 4% to 5 lines in length) is eminently vari- 

 able not only in hue and solidity, but also in exact outline 

 and the relative size of its volutions; nevertheless it may be 

 defined, on the whole, as a cylindrical species, not much taper- 

 ing towards the apex, with the suture exceedingly oblique, the 

 peristome thick and incrassated, and with the penultimate 

 whorl more or less largely-developed." ( Wollaston. ) 



Wollaston recognizes two forms: the typical lanzarotensis, 

 found on the craggy ridges above Haria, with the shell ' ' more 

 solid, more highly polished, and of a paler ochreous-yellow, on 

 the average a trifle narrower and more cylindric, with the 

 penultimate volution a little more tumid, and with the aper- 

 ture, which is just appreciably shorter, rather more obtusely 

 rounded, or less angular, at the point of junction with the 

 columella," and 

 Var. tumidula Wollaston. PI. 40, figs. 43, 44. 



"A little less solid, slightly less narrow, cylindric-fusiform, 

 obscure corneous, a trifle less glossy, the penult, whorl gener- 

 ally less noticeably lengthened, subinflated-conic ; aperture 



