SIGARETUS. 59 



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



Rather solid, deeply umbilicated, transparent white, spirally 

 linearly incised, grooves stronger next the suture. 



Length, 12 mill. 



Malacca. 

 S. MAMTLLARTS, Linn. PI. 25, figs. 85, 86. 



Umbilicated, rather thick, white, spirally remotely sulcate, 

 suture channeled. Length, 1 inch. 



Seychelles, Madagascar ? 



S. LINNEANUS, Recluz. PI. 25, figs. 89, 90. 



Umbilicated, thin, white, narrowly regularly spirally grooved, 

 pellucid. Length, 22 mill, 



Sunda Islands, Philippines. 



S. Lamarckianus,~R,ec\uz (fig. 90), and probably S. cancellatus, 

 Swains, (not described), are synonyms. 



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



Rather solid, umbilicated, white, whorls slopingly flattened 

 above, then gibbose, smooth, or obliquely minutely striate. 

 Length, 14 mill. 



Singapore. 

 Probably an immature shell, perhaps of mamillaris. 



S. PICTUS, Reeve. PL 25, fig. 92. 



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

 obscure revolving bands of short, longitudinal chestnut mark- 

 ings. Length, 1 inch. 



Adelaide, So. Australia. 



Un figured and Undetermined Species. 



S. SOUVERBIEI, Folin. This is merely an embryonic shell, 3'5 



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



S. CAROLTNUS, Dufo. Seychelles Is. 



S. HELICOIDES, Guillou. Amboina. 



S. AUSTRALIS, Dunker. Australia. 



S. LUCIDUS, Gould. North China. 



S. FILICATUS, Mighels. Zanzibar. 



