46 TESTACEA ATLANTICA. 



podous fauna on the whole nine detachments of a Group which 

 is so widely scattered as that of the Azores. 1 



Pupa tessellata. 



Pupa tesselata, Morel., Hist. Nat. des Acor. t. 5. f. 6 



(I860) 

 ., „ Drouet, Faun. Agar. 164 (1861) 



Habitat Sta. Maria; in sylvis laurorum et Myricce in 

 montibus copiose dog-ens. 



This is the largest of the Azorean Pupce which have hitherto 

 been detected, and one which has been found only in Sta. Maria, 

 — where it is said to occur abundantly, in the laurel and Myrica 

 woods, on the mountains of the interior. It is very much on 

 the Madeiran type, and seems to me (so far as I can judge from 

 the diagnosis and figure) to have most in common with such 

 species as the P.laurinea and concmna, — with which its some- 

 what downwardly-produced and trefoil-shaped aperture would 

 still further tend to affiliate it. 



The P. tessellata is a rather oval or barrel-shaped species, 

 somewhat obtuse at the apex, lightly costulated, and of a ful- 

 vescent hue, — but a good deal darkened, or chequered, with 

 irregular, squarish, more or less confluent, castaneous makings ; 

 and its aperture has six plaits, — two of which are ventral (the 

 outer one being the larger, and joined by a corneous sphincter 

 to the angle of the lip), two columellary, and two (more 

 internal and less developed) palatial. 



(§ Craticiila, Lowe.) 



Pupa rugulosa. 



Pupa rugulosa, Morel., Hist. Nat. des Acor. 199. t. 5. f. 3 



(1860) 

 „ „ Drouet, Faun. Acor. 166 (1861) 



Habitat Pico ; in horto quodam versus occidentem insula?, 

 semel tantum (inter Helicem pauperculam, Lowe) reperta. 



The present Papa and the P. vermiculosa appear to differ 

 from the other Azorean species here enumerated in being a 

 little more solid and opake, and more distinctly sculptured 

 across the whorls with longitudinal costse. Indeed, so far as I 

 can judge from the diagnoses and figures, I should say that 

 they are very intimately allied, — the rugulosa, however, being 

 rather the larger of the two, as well as somewhat more oblong 



1 And this, I may add, is rendered even still more remarkable when we 

 take into account that at any rate the island o£ S. Jorge dues not appear to 

 have been visited by MM. Morelet and Drouet at all. 



