MADE1RAN GROUP. 263 



fragile consistency, and perfectly edentate, backwardly (and ob- 

 liquely) acuminated mouth being strongly suggestive of that 

 species. Nevertheless specifically it is quite distinct, — its 

 smaller size, darker hue, and conspicuously iridescent surface, in 

 conjunction with its slightly shorter and more attenuated spire, 

 its rather less flattened volutions (the penultimate one of which 

 is not so elongate), its still thinner and more pellucid substance, 

 and the fact of its columella being less twisted and not so pro- 

 minent at the base, being more than enough to separate it im- 

 mediately from the L. producta. 



My diagnosis of this Lovea is drawn out from eight examples 

 which I obtained in a rather singular manner. Whilst residing 

 at S. Antonio da Serra, in the spring of 1870, I sent down to 

 the dry, eastern district between Canico and Sta. Cruz to pro- 

 cure some plants of the Euphorbia piscatoria, which were 

 consequently brought to me in considerable abundance ; and 

 adhering' to the earth around their roots were several common 

 Madeiran Helices (such as the H. arcta and maderensis), and 

 intermingled with the latter were these individuals which seem 

 to me to represent a Lovea which is unquestionably new. It 

 is probable therefore that the species, when searched for in the 

 proper localities, may be found to be tolerably abundant. 



(§ Cylichnidia, Lowe.) 



Lovea ovuliformis. 



Helix ovuliformis, Lowe, Carabr. Phil. S. Trans, iv. 61. t. 6. 



f. 27 (1831) 

 Achatina ovuliformis, Pfeitf., Mon. Hel. ii. 278 (1848) 

 Tornatellina ovuliformis, Id., Ibid. iii. 523 (1853) 

 Achatina ovuliformis, Lowe, Proc. Zool. Soc. Lond. 206 



(1854) 

 Glandina ovuliformis, Alb., Mai. Mad. 56. t. 15. f. 1, 2 



(1854) 

 Achatina ovuliformis, Paiva, Mon. Moll. Mad. 115 (1867) 



Habitat Portum Sanctum ; in montibus excelsioribus hinc 

 inde vulgaris. In statu semifossili rarissima. 



The L. ovuliformis, which is peculiar to Porto Santo 

 (where it occurs principally amongst loose soil and vegetable 

 detritus on the ledges, and within the crevices, of the rocks, 

 on the summits of the highest peaks), is remarkable for its 

 small size and oval, or obtuse and pupseform, outline, as well 

 as for its thin, subpellucid substance, its short, curved, and 

 broadly expanded columella, and for the ventral wall of its 

 aperture being armed with a large, medial, prominent, trans- 



