236 ASTRALIUM. 



granulose liree, above nodose-plicate, last wliorl subacutely angled- 

 below, the angle beainng square, thick vaulted scales ; base inibri- ' 

 cately quadri-lirate ; ajDcrture suboblique ; columella arcuate, silvery,, 

 umbilical callus white. 



Habitat unlaioxon.. 



"A trochiform S})ecies in -which the longitudinal ribs may be only 

 faintly traced, leaving nodules at the top of the whorls, and strong 

 obtuse square looking scales at the margin, while the whorls are en- 

 circled in the middle with two or three rows of minute granules." 



Sowerby's description and figure are given. Compare A. tubero- 

 sum Phil. p. 227. 



A. PAGODULUM Sowerby Jr., 1886. PI. 63, fig. 28. 



"Shell imperforate, conical, orange-drab; whorls slopingly convex^ 

 obliquely wrinkled-plaited, plaits, rather large, swollen, basal margin 

 of the whorls i:)rickly scaled, base scale-ridged around the callosity."' 



Habitat nnhiown. 



Trochus acaleatus Reeve (preoc.) is a synonym. 



The original figure and description are given. 



A. PAooDus Tenison- Woods, 1879. Unjigured. 



Shell narrowly pyramidal, thin, pale roseate, variegated with 

 Avide longitudinal olive bands; whorls 6, concave, very acutely 

 angular at the suture, armed with a regular row of short spines, and 

 girdled wdtli four or five lines of indistinct granulose lirse ; spines 

 numerous, obtusely angular, concave, 18 in number at the periphery 

 of the last whorl ; apex acute ; aperture obliquely quadrate, de- 

 l^ressed smooth inside, nacreous ; labrum acute ; columella curved,, 

 truncate ; base quite Hat, spirally. Urate and very finely transversely 

 striate, pale yellowish white and very faintly spotted with brown. 



Alt. 15, diam. 18 mill. (Tenison- Woods) 



Moreton Bay, Australia. 



The original description is giving above. I do not know the exact 

 systematic i:)osition of the form. 



A. ii.T-MATRAGus Meuke. PI. 54, figs. 57, 58. 



Shell imperforate, pale ashen, elevated-conic, apex acute ; whorls 

 7, planulate above, with radiating oblique folds, which are produced 

 into short spines at the periphery ; last whorl carinated, with ten 

 to twelve spines in a single series ; base plano-concave, concentrical- 



