476 TEST ACE A ATLANTIC A. 



tudinalibus ubique sensim subdistinctioribus, necnon in 

 anfractibus posterioribus foveolas o vales conspicuas dense positas 

 efficientibus. [ins. Canaria Grandis (an vere ' Teneriffa' ?), 

 in regione ' El Monte ' dicta, necnon prope Aldea de San 

 Nicolas, atque Lagaete et Gaidar, hinc inde, et recens et semi- 

 fossilis, copiose repertus.~\ 



Fam. 8. CYCLOPHORIDJE. 



Genus 21. CRASPEDOPOMA, Pfeiffer. 



Craspedopoma costatum. 



Cyclostoma costatum, Shuttl., Bern. Mitth. 145 (1852) 

 Craspedopoma costatum, Pfeiff., Mon. Pneum. 415 (1852) 

 Cyclostoma annulatum, Lowe, Ann. Nat. Hist. 116 (1860) 

 Craspedopoma costatum, Pfeiff., Novitat. Conchol. iii. 446. 



t. 28-30 (1869) 

 Cyclostomus costatus, Mouss., Faun. Mai. des Can. 146 



(1872) 



Habitat Palmam, et Hierro ; in humidis sylvaticis interme- 

 diis, rarissimum. 



This interesting little species is the only Craspedopoma 

 which has hitherto been observed in the Canarian Group, 

 where it appears to be extremely rare, and confined to the damp 

 sylvan regions of an intermediate altitude. I met with it both 

 in Palma (where it was found also by Mr. Lowe and Blauner) 

 and Hierro, namely in the Barranco de Gralga and the Bar- 

 ranco de Agua of the former, and in the densely wooded district 

 of El Grolfo on the western slopes of the latter. 



The C. costatum, in its general facies and dark coffee-brown 

 hue, is perhaps more nearly related to the Madeiran C. Moni- 

 zianum than to any of the other species of that archipelago. It 

 is, however, smaller and more abbreviated, and has its volutions 

 still more tumid or convex (the suture therefore being very 

 deeply impressed), and elegantly sculptured with powerful 

 (though not very constant) transverse costse, or oblique, slightly 

 curved ribs, which become gradually evanescent towards the 

 nucleus and the aperture. 



Fam. 9. TRUNCATELLID^E. 

 v Genus 22. TETINCATELLA, Eisso. 



Truncatella Lowei. 

 Truncatella Lowei, Shuttl., Bern. Mitth. 146 (1852) 



Mouss., Faun. Mai. des Can. 147 



(1872) 



