184 



ADDITIONS TO THE MENAGERIE. 



[June 10, 



10. Arinia scalatella. 



Testa suhohtecte perforata, ovato-ohlonga, tenuis, costis distanti- 

 bus transversis regulariter seulpta, pellucida, fiavido-cornea ; 

 spira ovata, apice acuto ; sutura valde impressa ; avfr. 5^, tur- 

 gidi, ultimus attenuates ; apertura parum ohliqua, circularis ; 

 peristomium late expansum, marginibus ad avfractum ultimum 

 vix disjunctis. Operculum extus concavum, lamelloso-arcti- 

 spirum, corneum. 

 Long. 4^, diam. 2^ mill. 



Unicum specinien in monte Arayat insulse Luzon repertum in col- 

 lectione Semperiana exstat. 



Genus verisimiliter cum Pupinaceis collocandum ; statura proxime 

 affine Streptaido Bens., a quo deficiente tuba dififert ; operculum 

 valde a Diplommatince operculo discrepat. 



The following lists of the additions made to the Menagerie during 

 the months of April and May were read : — 



April. 



