Art. XV. — Or> a Neir Species of Victorian Mollusc 

 (CoraUioph ila wilson i). 



By G. B. Phitchaed and J. H. Gatliff. 



[Bead 21st October, 1897]. 



Coralliophila wilsoni, n. sp. 



Shell suiall, bicoiiic, acuminate posteriorly and anteriorly, 

 consisting of a smooth embryonic portion of about a whorl 

 and a half, succeeded by about five gi-adually enlarging some- 

 what angulate whorls. 



Spire a little more than one-third the length of the shell. 

 Spire whorls costate and angulate medially ; eleveii costje on 

 the penultimate whoi-1, costaj most strongly developed in the 

 median portion of the whorl, rapidly thinning out towards both 

 sutures ; the sutures being well defined and rather deep ; spaces 

 between the costie concave and about as broad as the cost;«. 



Body-whorl rather strongly angulate at the shoulder, which 

 is situate in about the upper fourth of the whorl. Angulation 

 and costation of the whorl tend to become somewhat less distinct 

 towards the outer lip. Transverse to the costation over the 

 whole of the body and spire-whorls, there are strong and 

 apparently uniform spiral threads, bearing close erect forwardly 

 projecting scales. The latter character is best seen on the 

 body-whorl. The spaces between the spiral squamose threads 

 are much narrower than the threads. 



Aperture ovate, produced anteriorly into a short broad canal. 

 Columella straight, smooth, and enamelled. Outer lip with a 

 thin and much crenulated margin, crenulation of the margin 

 extending to well defined grooves within the lip. 



Umbilicus slight, margined by a strong tortuous ridge. 



Shell of a brownish tint ; aperture white with a faint pinkish 

 tint, most distinct on the columella. 



Operculum, horny purpuroid. 



