BY C. HEDLBY. 89 



FOSSARUS SYDNEYENSIS, Sp.IlOV. 



(Plate iu., fig. 12.) 



Shell broadly ovate, rather solid and narrowly perforate, body 

 whorl large, spire short and turreted. Colour dead white 

 (1 bleached). Whorls four, flattened for a space below the suture, 

 a little inflated at the periphery and gently rounded to the base. 

 Sculpture: the first two whorls are smooth, the next has three 

 raised spiral cords, while the last is encircled by eleven, sharply 

 elevated, narrow, spiral cords, separated by interstices of twice 

 or thrice their own breadth, two on the shoulder and two on the 

 base are more prominent than the rest, the basal ones wind 

 obliquely into the narrow umbilical fissure, minute stria? in the 

 direction of growth lines decussate the troughs between the 

 smooth-topped ridges. Suture impressed. Aperture oblique, 

 ovate, exceeding half the length of the shell, angled above, 

 rounded beneath, furrowed within by the print of the external 

 sculpture ; outer lip sharp, denticulated by the sculpture. 

 Columella arched, broad, above plastered on the body whorl and 

 over the axial perforation, below spreading and reflected; at its 

 anterior termination is the faint rudiment of a channel. Length 

 4-5, breadth 3 mm. 



Hah. — Balmoral Beach, near Sydney; several specimens among 

 shell sand. 



Type to be presented to the Australian Museum. 



COUTHOUYIA ACULEATA, Sp.IlOV. 



(Plate iii., fig. 10.) 

 Shell ovate, with a slender acuminate spire and inflated body 

 whorl. Colour dead white (? bleached). Whorls six, rapidly 

 increasing, divided by a narrowly but deeply grooved suture. 

 The last whorl just previous to the aperture, is free from its 

 predecessor. Sculpture : the last whorl is encircled by nine 

 narrow, sharp, projecting, spiral ridges; passing from suture to 

 base these ridges gradually and proportionately grow larger and 



