208 TEST ACE A ATLANTIC A. 



Pupa microspora, Lowe, Proc. Zool. Soc. Land. 207 (1854) 

 Alb., Mai Mad. 61 (1854) 



Morel., Hist. Nat. des Acor. 197. t. 5. f. 1 



(1860) 



edentula var., Paiva, Man. Moll. Mad. 119 (1867) 

 microspora, Mouss., Faun. Mai. des Can. 124 (1872) 

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



Habitat Maderam editiorem sylvaticain ; ad frondes filicum 

 humidas hinc inde congregans. 



A small, short, ventricose, somewhat turbinate or rounded- 

 conical, posteriorly truncate species, of a pale-brown hue and 

 thin in substance, and one which has all the appearance (in 

 seemingly adult examples) of being immature. Its volutions 

 are tumid, and very densely and minutely striate ; and its aper- 

 ture, which is short (being a little wider than long), is perfectly 

 edentate, with the peristome acute (as though young and 

 unformed) instead of being thickened. It is very closely related 

 to the European P. edentula, Drap., of which it may possibly 

 represent a geographical state ; nevertheless it is, not only (on 

 the average) a trifle smaller, and relatively somewhat shorter 

 and very pyramidal, but likewise less shining, and much more 

 coarsely sculptured with exceedingly oblique hair-like striae, and 

 its ultimate whorl is proportionately a trifle more abbreviated. 



The P. microspora, which occurs also in the Azorean and 

 Canarian archipelagos, is eminently indigenous in Madeira 

 proper, inhabiting the higher altitudes, where it is found 

 attached to the fronds of various ferns in moist cloudy spots 

 within the wooded regions. In such situations it was taken 

 abundantly by myself and subsequently by Mr. Lowe, at the 

 Lombarda das Vacas ; and I have likewise met with it at the 

 Fanal, the Montado dos Peceguiros, S. Antonio da Serra, and in 

 numerous other elevated districts. 



( Paluditiella, Lowe.) 



Pupa limnaeana, 



Pupa limnseana, Lowe, Ann. Nat. Hist. ix. (1852) 

 Id., Proc. Zool. Soc. Lond. 206 (1854) 



Paiva, Mon. Moll. Mad. 117 (1867) 



Habitat Maderam editiorem ; inter muscos in truncis lau- 

 rorum, necnon inter frondes filicum, in humidis sylvaticis degens, 

 rarissima. 



The rather broad, inflated, rounded-ovate, or somewhat glo- 

 bose, Limncvus- (or, rather, Paludina-) like form of this 

 remarkable Pupa, in conjunction with its few and ventricose 

 volutions (which are densely but very finely striated), its pale, 



