66 SCALARIA. 



S. ANCxUSTATA, Dunker. PI. 13, fig. 13. 



Narrowly turreted, white, whorls rounded, with equal, some- 

 what distant, continuous lamellse, a little declining. 



Length, 9 mill. 



Japan. 



S. SYMMETRICA, Pcase. PI. 13, fig 12. 



Solid, Avhite; whorls 6, contiguous, spirally striated, with 16 

 thick, slightly recurved, continuous varices. Length, 8 mill. 



Tahiti. 



S. GRACILENTA, Gould. PI. 13, fig. 10. 



Shell white, with 9 contiguous whorls, with profiaund suture, 

 crossed by 16 thin, rather low lamellse, the interstices minutely, 

 spirally striated. Length, 6"25 mill. 



Ins. Mangsi. 



S. TEXTURATA, Gould. PI. 13, fig. 9. 



Subperforate, yellowish white; whorls 8, rounded, nearly 



separate, crossed by nine whitish, elevated reflexed ribs, slightly 



aculeate above, interstices microscopically decussated. 



Length, 5 mill. 



Hab. unknown. 



One of the species of the Wilkes' Exploring Expedition, pos- 

 sibly Polynesian. 

 S. Philippinarum, Sowb. PI. 13, figs. 18, 19. 



Imperforate, white, or fulvous between the lamellse; whorls 

 about 10, well rounded, crossed by rather distant lamellae, a 

 little produced above. Length, 1 inch. 



Philippines, Australia, Anihoyna, etc. 



This species is quite common in collections and seems to have 

 a pretty wide distribution. Very probably some of the nearly 

 related forms are really only slight variations and should be 

 united with it 

 iS. JuKESiANA, Forbes. PI. 14, fig. 20. 



Imperforate, white; whorls 9, narrower than the preceding 

 species, separate at the suture, with more numerous, nearly 

 equal lamellae. Length, 17 mill. 



Australia. 



S. Wellingtonensis, Kirk, is said to be a synonym, but the 

 specimens received under that name at the Philadelphia Acad- 

 emy, from a distinguished Australian conchologist, appear to 



= S. Philippinarum. 



