176 SEMINELLA. 



C. STRIATULA, Dunker. PI. 5.8, fig. 39. 



Shell subcylindrical, with acuminated and sharp-pointed spire, 

 closely longitudinally plicate, the plicae sometimes becoming 

 obsolete towards the middle of the body-whorl, with close 

 revolving striae crossing over the ribs, but strongest towards the 

 base of the shell ; lip varicosely thickened externally and slightly 

 plicate within; yellowish, with chestnut fascicles at the sutures 

 and one or two bands of oblique chestnut spots. 



L. 1*5 mill., diam. 2*5 mill. 



TaTieiti. 



Described from specimens which formed a portion of the 

 original collection of this species. 



C. COSTELLIFERA, Pease. 



Shell oblong-ovate, longitudinally ribbed; ribs about twenty, 

 close, compressedly rounded, extending the whole length of the 

 whorls, very slightly constricted beneath the sutures ; whorls 

 five, plano-convex; aperture rather wide; sinus open, on the 

 central third of the lip ; base subtruncate ; canal very short ; 

 ribs grayish white : interstices sometimes reddish brown ; last 

 whorl partially banded or irregularly painted with reddish 



brown. L. 5, diam. 2 mill. 



Polynesia. 

 Unfigured, and unknown to me by specimens, 



C. SULCOSA, Sdwb. PI. 58, fig. 40. 



Shell lead-black, with distant, sharp, longitudinal, lighter- 

 colored ribs, often appearing continuous from apex to base, 

 interstices sometimes showing revolving striae ; aperture choco- 

 late, the lip notched behind, minutely denticulate within. 



Length, 8 mill. 



Panama; Annaa and Lord Hood's Islands (Cuming). 



C. MOESTA, C. B Adams. PI. 58, fig, 41. 



Shell very dark chocolate-color, obliquely closely ribbed, the 

 interstices with revolving striae; the ribs disappear upon the 

 upper portion of the body-whorl and the striae become con- 

 tinuous ; lip externally varicose, notched behind, crenulated 



within. Length, 7 '5 mill. 



Panama. 



Possibly only a narrow variety of C. niyricam, Sowb. 



