202 TEST ACE A ATLANTIC A. 



Achatina tornatellina (purs), Paiva, Mon. Moll. Mad. 113 



(18G7) 



Habitat Desertam Australern ; inter herbas lapidesque, 

 rarissima. 



The present Lovea and the following one would fall strictly 

 under Lowe's section Hypselia, in which the outline is relatively 

 narrower and slenderer than in Amphorella, the substance 

 thinner and rather transparent, the suture more oblique, the 

 penultimate volution more elongated, and the aperture perfectly 

 free from callosities and plaits. Yet since the mouth and colu- 

 mella have the peculiar structure which is so characteristic of 

 A mphorella, I hardly think that the L. producta and iridescens 

 will require us to acknowledge a separate subgenus for their 

 reception. At the same time, with such manifest peculiarities 

 as those to which I have just called attention, I must protest 

 against the extreme rashness of the Baron Paiva in treating the 

 former of those species (for the latter one still remains to be 

 enunciated) as a mere variety of the L. tornatellina. 



Indeed were it not for the structure of its aperture and 

 columella, the L. producta woidd have more in common with 

 the section Fusillus than it has with Amphorella, — its narrowed 

 contour, oblique suture, and subpellucid surface, in conjunction 

 with its freedom from callosities and plaits, being more sugges- 

 tive of such species as the terebella than of the mitriformis and 

 tornatellina. 



So far as has been observed hitherto, the L. producta is 

 found only on the Southern Deserta (or Bugio), — where it was 

 first detected by Mr. Leacock, and whence it has been obtained 

 subsequently by Mr. Lowe and myself, and more recently by the 

 Baron Paiva ; but we did not meet with it in the muddy, sub- 

 fossiliferous deposits on the summit of that island. 



Lovea iridescens, n. sp. 



T. angustula, cylindrico-subulata, fragilis, subpellucida, iri- 

 descenti-nitens, spira producta ; anfractibus subconvexiusculis, 

 sutura distincta obliqua ; apertura augusta, supra attenuate aut 

 retro oblique producta, omnino edentula ; peristomate tenui, 

 acuto, labro dextro rectiusculo ; columella abbreviate, arcuata, 

 subtorta, subexpansa sed basi vix prominula. — Long, vix 3 lin. 



Habitat Maderam ; inter Canico et Sta. Cruz, ad Euphor- 

 biarum radices adherens, lecta. 



The present Lovea, which appears to be quite distinct from 

 every member of the group which was described by Mr. Lowe, 

 belongs to exactly the same type as the South-Desertan L' 

 producta, its rather narrow, subulate outline, oblique suture, 



