AZOREAN GROUP. 13 



in the nummulitic limestone near Feredjik in Roumelia ; and it 

 was for the reception of the particular species which they repre- 

 sent that the genus was established by Deshayes (Journ. de 

 Conch, v. 283) in 1859. And shortly afterwards another ex- 

 ponent of the group was met with by M. d'Archiac, in a similar 

 formation, in the Pyrenees. It would seem, therefore, judging 

 from the only evidence to which we have access, as if the type 

 had become extinct on the European continent but that it still 

 lingered at the Azores; though this may in reality be more 

 apparent than real, seeing what large tracts of country both in 

 Spain and Portugal are still practically uninvestigated. 



According to Morelet and Drouet, it is only in S. Miguel 

 that the V. atlantica has yet been detected, where it occurs 

 sparingly around Ponta Delgada and in the valley of the 

 Furnas, its movements being described as unusually sluggish 

 and peculiar. The animal is said to be of a somewhat reddish 

 olivaceous-brown, rather attenuated in front, but with its poste- 

 rior half not only compressed and carinate but very coarsely 

 wrinkled. It seems to be obliquely truncate towards the tip ; 

 but whether the subapical angle carries a mucous gland, as its 

 mere outline would lead one to suspect (though the ' dryness ' of 

 its surface would perhaps rather militate against that hypo- 

 thesis), the diagnosis does not specify. Its shield (when the 

 creature is fully expanded) is nearly medial in position, the 

 hinder half, which covers the internal shell (stated to be some- 

 what ancyliform and oblong), being elevated and protuberant. 



Fam. 2. TESTACELLID^E. 



Grenus 4. TESTACELLA, Cuvier. 



Testacella Maugei. 



Testacella Maugei, Per., Tabl. Syst. 26 (1821) 



Lowe, Cambr. Phil. 8. Trans, iv. 40 



(1831) 



Id., Proc. Zool. Soc. Land. 163 (1854) 



Morel., Hist. Nat. des Aqor. 143 (1860) 



Drouet, Faun. A for. 142 (1861) 



Paiva, Mon. Moll. Mad. 6 (1867) 



Mouss.y Faun. Mai. des Can. 11 (1872) 



Habitat S. Miguel, Sta. Maria, et Fayal (teste Drouet) ; 

 prsecipue sub lapidibus in cultis. 



The European T. Mangel, which is found in the Madeiran 

 and Canarian archipelagos, occurs (according to Drouet) in S. 

 Miguel, Sta. Maria, and Fayal, principally about gardens and 



