448 TEST ACE A ATLANTIC A. 



Pupa dealbata, £Orb., im W. et B. Hist. 74 (1839) 

 „ „ Pfeiff., Mon. Hel. ii. 302 (1848) 



„ „ Movl88., Faun. Mai. des Can. 121 (1872) 



Habitat Fuerteventuram, Canariam G-randem, Teneriffara, 

 Gomeram, et Palmam ; sub lapidibus, prsecipue in aridis infe- 

 rioribus, late sed vix copiose diffusa. 



This large, white, and edentate Pupa (so enormous as com- 

 pared with any other member of the genus from these Atlantic 

 archipelagos, with the exception of the subfossil P. macrogira, 

 Mouss., from Gomera) is very widely spread at the Canaries, — 

 where, although it has not yet been observed in either Lanza- 

 rote or Hierro, it will probably be found to be universal. Apart 

 from its gigantic size, and its white, opake, and densely and 

 coarsely striated surface, it may be known by its parallel outline 

 and blunt apex, by its volutions being flattened, or but very 

 slightly convex, and by its aperture (which is semi-oval, and 

 has the peristome thickened, although not continuous, and a 

 good deal developed) being perfectly edentate. 



The present Pupa appears to belong to a large type of form, 

 of which there are representatives in Africa and the Isle of 

 France. Indeed I possess a monstrous species (the P. fusus, 

 Lam.) from the latter, which, although very much larger and 

 more elongate, is greatly suggestive of the P. dealbata. Never- 

 theless it differs materially in having an obtuse ventral plait 

 developed near the angle of the lip. 



The P. dealbata was taken by Mr. Lowe and myself in the 

 region of El Monte, and near Gaidar, in Grand Canary (in which 

 island it has been found abundantly also by Mr. Watson) ; as 

 well as around Sta. Cruz, the Puerto Orotava, and Garachico in 

 Teneriffe ; and in the Barranco de Nogales, the B. de Galga, 

 the B. de San Juan, the B. de Herradura, and above Buen- 

 avista, in Palma : and, according to Mousson, it was met with 

 by Fritsch in Gomera and Fuerteventura. In Gomera it was 

 obtained also by Mr. Lowe, — at Hermigua. 



(§ Truncatellina, Lowe.) 



Pupa atomus. 



Pupa atomus, Shuttt., Bern. Mitth. 144 (1852) 

 „ „ Pfeffi, Mon. Hel. iii. 532 (1858) 



„ „ Mouss., Faun. Mai. des Can. 125 (1872) 



Habitat. Teneriffam ; a D. Blauner sub foliis detecta. 



Having seen no type of this very diminutive Pupa, which 

 was found by Blauner in Teneriffe, I can offer no remarks on its 

 specific peculiarities beyond what may be gathered from the 



