ASTKAMTM. l>;;7 



ly squamose-lirate ; aperture transverse, channelled at the carina ; 

 columella arcuate, purple or blue margined, dentate at base. 



Alt. 27, diam. 32 mill. 



Jupiniw. i,d Chinese Seas. 



T. colninrH'iri* Phil, and T. cjratus Phil, are synonyms, and in 

 part, perhaps, T. ii#trri.wu8 Rve. 



Base more concave than in .1. //r//v,x/ou, peripheral spines in a 

 single series, and finer than in that species. 



A. HEXAGONUM Phil. PI. 04, figs. 44-40. 



Shell perfectly conic, i in perforate, reddish-white, redder in the 

 furrows, costate and obliquely rugose-silicate, the rihssix in nuni])er, 

 Bubcontinuous, terminating in small vaulted spines at the base ; per- 

 iphery acute, angulate, stellate, with twelve points; base flat, sqita- 

 mosely eight or nine lirate ; aperture suborbicular, angulate at out- 

 er margin. Alt. 13, diam. 15 mill. 



Habitat unknown. 



Philippi's description and figure are given. The species may be 

 an immature form of A. hcvmatragum. 



A. SKMICOSTATUM Kiener. PI. <J3, figs. 15-18. 



Shell elevated-conic, solid, imperforate, olive-brown or cinereous, 

 apex acute; whorls (5-7, sharply carinated, upper surface concave, 

 longitudinally more or less finely and irregularly plicate below the 

 sutures; coarsely plicate on the lower half of the whorls, the folds 

 terminating in short nodes at the periphery, twelve to sixteen in 

 number on the last whorl, and also scalloping the sutures; base 

 flat, somewhat depressed around the middle, finely concentrically 

 lirate nnd radiately striate, the line about eight to sixteen in number ; 

 aperture very oblique, suboval, white within, slightly channelled 

 at the carina, but scarcely angulate ; columella bluish, rosy or white, 

 short, curved, dentate below ; base of aperture horizontal, sometimes 

 with a submarginal row of minute tubercles within. 



Alt. 27, diam. 2-1 mill. 



Indian Ocean; Australia (?) 



This is Ti'ofJins strff'iliix of Philippi and of Reeve. It may possi- 

 bly be the stellatus of Gmelin. That species was said by him to be 

 West Indian. 



In some specimens the peripheral spines are rather long and direct- 

 ed outward. The lira? of the base are sometimes coarser than the 

 figures indicate ; and in fully matured individuals the outer ones be- 



