44 TEST ACE A ATLANTIC A. 



Pupa anconostoma, Lowe, Proc. Zool. Soc. Land. 208 



(1854) 

 Alb., Mai. Mad. 61. t. 15. f. 19-22 



(1854) 

 MoreL, Hist. Nat. des Acor. 198 



(1860) 



umbilicata, Drouet, Faun. Acor. 165 (1861) 

 Paiva, Mon. Moll. Mad. 120 (1867) 



anconostoma Mouss., Faun. Mai. des Can. 123 



(1872) 

 umbilicata, Watson, Journ. de Conch. 223 (1876) 



Habitat ins. omnes (sec. Drouet); sub lapidibus necnon ad 

 muros, prsesertim in cultis, vulgatissima. In Fayal a Revdo. 

 R. T. Lowe lecta. 



The form which this common European Pupa assumes at 

 the Azores appears chiefly to be the rather smaller one, with a 

 less developed ventral plait, to which Mr. Lowe gave the name 

 of anconostoma, and which is so abundant in the Madeiras 

 and Canaries, and which occurs even at St. Helena. Morelet 

 is content to speak of it as ' tres commune aux Apores ' ; but 

 Drouet, less guarded in his mode of expression, adds ' Habite 

 tout 1'archipel.' It is far from unlikely that the latter may in 

 reality be true ; nevertheless if M. Drouet did not absolutely 

 meet with it on the whole nine islands, it is at least rash (to 

 say nothing of the want of precision in the actual statement) to 

 assume that it is universal ; for, to take the instance of the 

 neighbouring Group, although it positively swarms in Madeira 

 proper, it has not as yet been observed in Porto Santo at all, 

 and but very sparingly on only two of the three Desertas. 

 Therefore I cannot but consider it somewhat strange that the 

 nine Azorean islands, which are far more widely separated from 

 each other, should have been ascertained to harbour it both 

 universally and in profusion. 



( lAostyla, Lowe.) 



Pupa fuscidula. 



Pupa fuscidula, Morel., Hist. Nat. des Acor. 202. t. 5. f. 5 



(1860) 

 Drouet, Faun. Acor. 165 (1861) 



Habitat ins. omnes (sec. Morelet et Drouet) ; sub lapidibus 

 et inter folia emortua degens. 



A Pupa which is said by Morelet and Drouet to be found on 

 every island of the Azorean Group ; a range which, judging from 

 the analogy of the allied forms at the Madeiras and the Canaries, 



