238 ASTKALIUM. 



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

 ture shown in fig. 18. 



A. BABELK Fischer, 1874. PL 52, fig.?. 21, 22. 



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

 whorls 7, slightly convex, obliquely radiately costute with distant 

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

 interstices smooth ; last whorl carinated, the carina bearing about 

 eight nodules; base fiat, smooth, with fine oblique incremental stride; 

 aperture angulated; columellar region white, blue margined, uniden- 

 tate at base. AH. 20, diam. 11) mill. 



Habitat nnknotcn. 



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

 are given. 



T. barbells Sow)), is the same. 



A. HEIMBURGI Bunker, 1882. PI. 58, figs. 65, 66. 



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

 ly lirate; periphery carinated, armed with compressed imbricated 

 subdeflexed spines ; ba.se plano-convex, ornamented with spiral 

 subimbricated lira?: 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. 



Jap a 



Operculum and animal unknown. 



It is Uvanilta heimburyi, Dkr. I am undecided about the real 

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

 as restricted in this work. 



*** 



The following species have been placed in Ui'cnn'Ua by Fischer; 

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

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

 of them. 

 A. ROTULARIUM Lamarck, 1822. PI. 54, fig. 55 ; pi. 64, figs. 50, 51. 



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

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

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

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

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



Alt. 25, diam. 36 mill. 



Seas (Reeve), 



