240 ASTRALIUM. 



Var. SQUAMIFERUS Koch. PL 54, fig. 52. 



Similar to the type; but flange not exserted at the suture?, and 

 scarcely undulating. Alt. 19, diam. 30 mill. 



A. TENTORIIFORME Jonas, 1845. PL 53, figs. 41, 42. 



Shell elate-conic, imperforate, solid, pale yellowish, spire elevated, 

 whorls 7-8, very obliquely finely wrinkled, flat above, base concave; 

 periphery acutely carinated, above the carina obscurely longitudi- 

 nally folded ; base with numerous regular concentric squamose 

 line; aperture very oblique, silvery within, angled at the carina, 

 basal margin nearly straight, tinged with pink; columella short, 

 wide, arcuate, sometimes pinkish, terminating in a tubercle below; 

 parietal callus usually covering more than half the surface of the 

 base, its margin often elevated. Alt. 35, diam. 35 mill. 



Australia. 



Operculum (pi. 60, fig. 46) oval, brown within with sublateral 

 nucleus; outside white, with a curved sub-obsolete central rib and 

 an obsolete short basal rib. 



Synonyms: T. urvillei Phil., T. georyianus Quoy,fi.de Kiener. 



Some specimens are more elevated, others more depressed than 

 the figures. 



A. AUREUM Jonas, 1844. PL 64, figs. 52-54. 



Shell small, depressed-conic, solid, golden yellow or olive, imper- 

 forate; spire low-conic; whorls 5, scarcely convex above, plicate at 

 the sutures, the folds becoming fainter and frequently bifurcating 

 toward the periphery, spirally lirate, the lira? below rather coarse, 

 beaded, above finer, cutting the folds more or less into granules; la.-t 

 whorl generally descending toward the aperture, compressed toward 

 the periphery, which is subangular except in large specimens ; aper- 

 ture rather small, oblique, pearly white, columellar callus dilated 

 over the umbilical region, and excavated there, and with an indis- 

 tinct denticle near its base. Alt. 10-14, diam. 12-19 mill. 



Australia, 



A very attractive little species, quite distinct in aspect from its 

 nearest allies. 



Subgenus U VANILLA Gray 1850. 



Shell conic, imperforate, periphery sharply carinated, carina 

 nodose, spinose or nearly smooth; whorls flattened above, flat or 



