151 



Last whorl oval-oblong, somewhat ventricose, flatly rounded 

 over the suture ; ornamented with about twenty, thin, hardly 

 elevated lamellae ; interspaces axially striated. 



Aperture oval-oblong; outer lip ascending to periphery of 

 penultimate whorl, somewhat patulously expanded, especially at 

 the two ends. 



Dimensions. — Length, 27 ; breadth, 17 ; length of aperture, 24.. 



Locality. — Lower beds at Muddy Creek, 



6. Harpa tenuis, spec. nov. Plate vi., fig, i. 



Shell thin, oval, with a rather short spire, ending in a rather 

 large blunt apex. Ordinary spire-whorls two, convex, but with 

 an ill-defined ante-medial angulation ; ornamented with thin, 

 slightly elevated lamell?e, and transversely interstriated. 



Last whorl oval, slightly ventricose over the suture ; orna- 

 mented with about 25 thin, slightly elevated lamellae, which 

 develope vaulted pointed scales on the shoulder, and with distant, 

 not prominent, flat spiral threads, which are more conspicuous on 

 the base in the form of wrinkled corrugations. 



Dimensions. — Leng-th, .36; breadth, 23; length of aperture, 29. 



Locality. — Lower beds at Muddy Creek. 



7. Harpa puUigera, spec. nov. Plate vi., fig. 9. 



Shell thin, oval, with a rather short spire, ending in a very 

 large hemispheric pullus, with the tip laterally immersed ; the 

 second turn of the pullus almost concealed by the first ordinary 

 whorl. Ordinary whorls one and a half, subangulated ; orna- 

 mented with thin, slightly elevated lamellse, which are vaulted on 

 the angulation. 



Last whorl oval-oblong, somewhat ventricose over the suture, 

 ornamented with about 25 thin, slightly elevated lamellae, which 

 are raised into vaulted scales on the shoulder ; the interspaces 

 wdth coarse axial stria? ; base spirally wrinkled. 



Aperture narrow-oval ; outer lip slightly ascending on the 

 penultimate whorl, its margin much thickened. 



Dimensions. — Length, 50 ; breadth, 30 ; leng-th of aperture, 

 42 ; diameter of pullus, 4*5. 



Locality.— Blue clays at Schnapper Point. 



8. Harpa clathrata, spec. nov. Plate vi., fig. 8. 



Shell moderately stout, narrow-oval, with a short spire ending* 

 in a moderately sized papillary pullus. Ordinary spire-whorls 

 two, angulated medially, and with a strong thread between the 

 angulation and the anterior suture, and ornamented with distant 

 thin angular costae, the interspaces with a few transverse wrinkles 

 of growth. 



Last whorl oval, somewhat ventricose and flatly rounded over 



