32 NAN1NA. 



X. OWENIANA, Pfr. PL 10, fig. 39. 



Perforate, thin, above radiately striate, decussated by very 

 close spiral lines; yellowish brown, peripheral angle whitish, 

 with a chestnut band below it, base greenish brown, shining with 

 irregular spiral impressed lines; whorls 4^, the last not descend- 

 ing, obtusely angulate at the periphery ; columella oblique, sin- 

 uous above. Diam. 32, alt. 17 mill. 



Philippines. 



X. LAMARCKIANA, Lea. PL 10, figs. 40, 41. 



Obliquely perforate, rather thin, rugosely striate, crossed by 

 impressed spiral lines, obliquely obsoletely rugulose ; yellowish 

 brown above, periphery lighter, with a chestnut band below it, 

 base olivaceous brown ; whorls 4j, the last not descending, per- 

 iphery angulated. Diam. 60, alt. 32 mill. 



Philippines. 



Yar. CADUCIOR, Reeve. Fig. 41. 



Shell smaller, thinner, lighter colored, more acutely angulated. 

 Diam. 55, alt. 24 mill. 



X. ANTONII, Semper. PL 11, fig. 44. 



Covered perforate, solid, with incremental and spiral im- 

 pressed striae, and slight oblique rug?e ; olivaceous brown, irreg- 

 ularly strigate, the periphery dark chocolate, base more shining ; 

 whorls 4J, suture white-bordered, last whorl with obsolete per- 

 ipheral angle ; lip somewhat thickened. Diam. 62. alt. 30 mill. 



Ins. Luzon. 

 X. PORPHYRIA, Pfr. PL 10, fig. 42. 



Imperforate when adult, moderately solid, obliquely rugosely 

 striate, with impressed spiral lines visible principally on the base; 

 light reddish brown with yellowish white irregular callous deposits 

 on the upper part forming a marbled or obliquely verrucose 

 raised ornamentation ; a brown band below the periphery, base 

 olivaceous brown, shining; whorls 4^, the last angulated at the 

 periphery, excavated around the umbilicus. 



Diam. 43, alt. 26 mill. 



l*le of Burias, Philippines. 

 N. ZEUS, Jonas. PL 11, fig. 46. 



Obliquely perforate, solid, with oblique rugae and elevated 

 spiral strise ; reddish, ornamented above with zigzag white 



