254 MANGILIA. 



M. PSEUDOCARINATA, Reeve. PI. 20, fig. 3. 



Whorls concavely shouldered, somewhat indistinctly keeled, 

 the keel rendered nodulous by the ends of close obliquely longi- 

 tudinal ribs, which are short, becoming evanescent about the 

 middle of the body-whorl, everywhere with close revolving 

 grooves, which are somewhat nodulous ; yellowish brown. 



Length, 9 mill. 



Habitat unknown (Cuming Collection). 

 M. PURA, Reeve. PL 23, fig. 76. 



Spire turreted ; whorls slightly, narrowty shouldered ; sutures 

 rather deep ; ribs narrow, reaching the sutures, revolving striae 

 distant ; yellowish white, with a median row of faint brown spots 

 on the back of the body-whorl. Length, 8 mill. 



S. Australia (Angas). 

 M. PALLIDA, Reeve. PL 23, fig. 78. 



Whorls convex, without shoulder, with about 10-11, strong, 

 flexuous ribs extending to the suture ; white. Length, 8 mill. 



Isl. of Ticao, Philippines. 

 M. SORDIDA, Reeve. PL 20, fig. 98. 



Whorls angulated in the middle ; longitudinally obliquely 

 ribbed, the ribs short, most prominent on the angle ; interstices 

 latticed with raised striae which become more prominent towards 

 the base of the body-whorl, where the ribs are obsolete ; dull 

 white. Length, 6 mill. 



Habitat unknown (Mus. Metcalfe). 

 M. SEMEN, Reeve. PL 23, fig. 86. 



Whorls with rather broad, sloping shoulders, nodulated by the 

 ends of short oblique longitudinal plicae, or ribs ; no revolving 

 striae ; chestnut-brown, the ribs lighter or whitish. 

 Length, 6 mill. 



St. Nicolas, Island of Zebu, Philippines, 



under stones at low-water (Cuming). 

 M. VITREA, Reeve. PL 23, fig. 95. 



Shell cylindrically elongated, thin, pellucid, glassy, smooth ; 

 no longitudinal ribs ; a few revolving grooves at the upper and 

 lower part of the body-whorl, the former appearing on the spire 

 also ; yellowish white. Length, 6 mill. 



Singapore, and Philippines (Cuming). 

 . A species having peculiar characters. 



