238 ASTRALIUM. 



come obsolete ; finally, the base of the aperture acquires the arma- 

 ture shown in fig. 18. 



A. BABELis Fischer, 1874. PI. 52, figs. 21, 22. 



Shell imperforate, conic, elevated, pale yellowish, apex acute ; 

 Avhorls 7, slightly convex, obliquely radiately costate with -distant 

 folds, which are prominently nodulose at the sutures and periphery; 

 interstices smooth ; last whorl carinated, the carina bearing about 

 eight nodules; base flat, smooth, with fine oblique incremental strife; 

 aperture angalated; cohimellar region white, blue margined, uniden- 

 tate at base. Alt. 20, diam. 19 mill. 



Habitat unhioivn. 



I have not seen this species. The original figures and description 

 are given. 



T. barbells Sowb. is the same. 



A. HEiMBURGi Dunker, 1882. PI. 58, figs. 65, 66. 



Shell conic, imperforate ; whorls 5, flattened, subgranosely dense- 

 ly lirate; peripheiy carinated, armed with comjiressed imbricated 

 subdeflexed spines ; base plano-convex, ornamented with spiral 

 subimbricated lirse ; columella with an oblong excavation at its ter- 

 mination; aperture subrotund, silvery margaritaceous within ; shell 

 whitish, subroseous at the base. Alt. 12, diam. 20 mill. 



Japan (J) 



Operculum and animal unknown. 



It is Uvanilla heimburgi, Dkr. I am undecided about the real 

 position of this species, but do not believe it to belong to Uvanilla 

 as restricted in this work. 



The following species have been placed in Uvanilla by Fischer; 

 but they do not seem to be as nearly allied to U olivacea, the type 

 of that group, as to Cyclocantha. The dentition is unknown in all 

 of them. 

 A. ROTULARiUM Lamaxck, 1822. PI. 54, fig. 55; pi. 64, figs. 50, 51. 



Shell subdepressed, conoid, Avhite, imperforate ; spire subacute; 

 Avhorls 6, obliquely finely costulate ; with numerous prominent im- 

 bricating laterally compressed plicae at the sutures ; last wdiorl cari- 

 nated, carina plicate-nodose, base convex, squamosely concentrically 

 lirate ; columella arcuate, white, not dentate ; aperture oblique. 



Alt. 25, diam. 36 rilill. 



Australian Seas (Reeve), 



