SIGARETUS. 69 



S. PELLUCiDUS, Reeve. PI. 25, fig. 84. 



Rather solid, deeply iimbilicated, transparent white, spirally 

 linearly incised, grooves stronger next the suture. 



Length, 12 mill. 



Malacca. 

 S. MAMiLLARTS, Linn. PI. 25, figs. 85, 8G. 



Umbilieated, rather thick, white, spirally remotely sulcate, 

 suture channeled. Length, 1 inch. 



Seychelles, Madagaacar "? 



S. LiNNEANUs, Rccluz. PI. 25, figs. 89, 90. 



Umbilieated, thin, white, narrowly regularly spirally grooved, 

 pellucid. Length, 22 mill. 



Sunda Islands, Philippines. 



S. Lamarckianus, ^ecliiz (fig. 90), and probably S. cancellatus, 

 Swains, (not described), are synon3'ms. 



S. FIBULA, Reeve. PL 25, fig. 91. 



Rather solid, umbilieated, white, whorls slopingly flattened 

 above, then gibbose, smooth, or obliquely minutel}^ striate. 

 Length, 14 mill. 



Singapore. 

 Probabh' an immature shell, perhaps of mamillaris. 



S. picTus, Reeve. PI. 25, fig. 92. 



Rather thin, deeply umbilieated, smooth, shining, white, with 

 obscure revolving bands of short, longitudinal chestnut mark- 

 ings. Length, 1 inch. 



Adelaide, So. Australia. 



Unfigured and Undetermined Species. 



S. SouvERBiEi, Folin. This is merely an embryonic shell, 3*5 



mill, diameter. It is useless to reproduce the figure. 

 S. Cargltnus, Dufo. Seychelles Is. 



S. HELicoiDEs, Guillou. Amboina. 



S. AusTRALis, Dunker. Australia. 



S. LUCiDus, Gould. North China. 



S. FiLicATUS, Mighels. Zanzibar. 



