CERITHIUM MUSCARUM. 



SPECIFIC CHARACTER. 



White, with costae, transverse strice and series of brown 

 spots. 



DESCRIPTION. 



Shell oblong-conical, with rather distant, longitudinal, 

 prominent ribs, and distant prominent spiral striae, which 

 by passing over the ribs give the latter a crenate appear- 

 ance, and are five in number on the body whorl and four 

 on the second, the intervals with smaller parallel striae ; 

 ribs about eleven on the body whorl ; volutions nine, a lit- 

 tle convex; suture indented, distinct; aperture oblique, 

 oval-orbicular ; labiutn concave ; colour pure white, with 

 reddish brown spots on the striae so arranged as to exhibit 

 longitudinal and transverse series. 



OBSERVATIONS. 



The regularly arranged spots on a white ground, give this 

 species a very neat and delicate appearance. 



