244 TEST ACE A ATLANTIC A. 



Aehatina eulima. 



T. linearis, angustissime cylindracea, gracillima, interdum 

 obsoletissime arcuatim subcurvata aut eccentrica, polita, hya- 

 lina, albida ; spira elongata, subconico-cylindrica, apice obtuso, 

 sutura obliquissima et distincte marginata ; anfractibus 6 J, 

 planis, etiam intermediis elongatis ; apertura (spira multo 

 breviore) subovata, antice acuminata, postice latiusciile arcuato- 

 rotundata, pariete ventral! in medio uniplicato (plica trans- 

 versa, intrante, distincta") ; peristomate simplici, acuto, margi- 

 nibus lamina crassiuscula junctis, dextro rotundato, in basalem 

 et columellarem regulariter curvatim (nee angulatim) continue ; 

 columella curvata et haud contorta, postice non abrupte trun- 

 cata, sc. in marginem basalem gradatim et facile mergente. 

 Long. tin. 2^-3 ; lat. may. f . 



Aehatina eulima, Lowe, Proc. Zool. Soc. Lond. 210 (1854) 

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



Pfeiff., Mon. Eel. vi. 243 (1868) 



Habitat Maderam, et Portum Sanctum, rarissime ; in ilia 

 recens, sed in hac semifossilis, a meipso detecta. 



Obs. Ab A. adcula, Mull., valde distincta ; differt testa 

 longiore, angustiore, magis lineari, ac magis cylindrica, inter- 

 dum obsolete etiam subcurvate excentrica; anfractibus inter- 

 mediis longioribus magisque plano-cylindricis, apicali semiglo- 

 boso-obtusulo, sutura obliquissima ; apertura subbreviore et 

 postice latiore, sc. ibidem magis exstante rotundata ; pariete 

 ventrali plica media instructo ; necnon columella ipsa omnino 

 simplici (haud postice abrupte terminata), in marginem basalem 

 gradatim et facile coeunte. 



This most little remarkable little Aehatina has hitherto 

 been known only from a subfossilized example, in a fractured 

 condition (its apex having been accidentally destroyed), which 

 was found by myself, many years ago, at the Zimbral d'Areia, 

 in Porto Santo ; and, although I have had no opportunity of 

 observing the animal, its manifest relationship with the A. aci- 

 cula (even though differing from it, in some measure, structu- 

 rally) justifies me, nevertheless, in treating it as a true Aeha- 

 tina (of the Acicula section), rather than as a Lovea. 



The original type of the A. eulima, which was described by 

 Lowe in 1854, is now in the University Museum at Oxford, 

 and I have consequently not been able to compare it with the 

 examples (in a recent state) which were taken by myself in 

 Madeira proper, and which are at the present moment before 

 me; nevertheless the diagnostic features of the species are so 

 well-marked, and peculiar, that I think it is impossible to err 

 in identifying the Madeiran individuals with the subfossilized 



