Art. IX. — On Some New Species of Victorian Mollusca. 



By G. B. PRITCHARD and J. H. GATLIFF. 



(With Plate VIII.). 



[Eead 8th June, 1899]. 



Drillia g-abnieli, sp. nov. 



Shell, turreted, elongate fusiform, consisting of a smooth 

 convex embryo of about one and a half whorls, succeeded by 

 about six nodose or imperfectly costate whorls. 



Apex obtuse, owing to the convexity of the embryonic whorls. 

 Spire-whorls subangulate medially or slightly below the middle, 

 and somewhat overlapping at the suture owing to the presence of 

 a more or less developed narrow sutural band. 



The earlier spire-whorls are occasionally somewhat obliquely 

 costate, but more frequently a medial tumidity only is noticeable, 

 in either case the costse or tumidities tend to become obsolete 

 towards the body-whorl, which is sometimes almost smooth. 

 Fine and somewhat irregular lines of growth mark the shell 

 parallel to the costation or nodulation, and transverse to this are 

 fairly strong spiral threads of two or three degrees of fineness, 

 occasionally slightly irregular or undulating where crossed by the 

 lines of growth. 



Aperture narrow-ovate, with abroad deep sinus just above the 

 shoulder. Anterior canal rather broad and short ; columella 

 white or whitish brown, and only slightly twisted ; posterior 

 end of aperture furnished just below the suture with a somewhat 

 strong tubercle. Outer lip thin and with a sharp edge, smooth 

 within. 



Colour, dirty-white, whitish-brown, to dark brown, usually 

 brown. 



Dimensio7is. — Length of type, 16 mm. ; breadth, 5 mm. ; 

 length of aperture, 6 mm. ; breadth of aperture, 2 mm. These 

 dimensions also well represent the usual size of the species, 

 though some examples are a little smaller, having a length of 

 16 mm. by a breadth of 4 nnn. 



