146 



Callosity of spire coarsely granulose. 



6. A. lanceolata. 



Callosity of spire smooth, or nearly so. 



Spire subcylindrical, obtuse. 7. A. ligata. 



Spire pyramidal, acute. 



Elongate fusiform ; aperture about half total length. 



8. A. semilmvis. 

 Aperture about two-thirds total length. 



9. A, pseud-australis. 



1. Ancillaria orycta, spec. nov. Plate x., fig. 5. 



Shell stout, ovately fusiform ; spire acuminate, with an acute 

 tip, spirally ridged ; last w^horl rather ventricose, margined at the 

 suture by a rather broad callous band, concavely and deeply 

 depressed. 



In shape and sculpture similar to A. marginata, but the apex 

 is acutely pointed, and the whorls are broadly and deeply fur- 

 rowed at the suture. 



Dimensions of a large specimen: — Length, 23; breadth, 12; 

 length of aperture, 14. 



Localities. — Oyster-banks, Aldinga Cliffs ; Jemmy's Point and 

 Cunninghame, Gippsland ( W. H. Gregson /) ; ferruginous sand- 

 rockj^Cheltenham, Victoria. 



2. Ancillaria papillata, spec. nov. Plate vij., fig. 4. 



Shell solid, cylindrically oblong ; spire pyramidally acuminate 

 and mucronate, ending in a small blunt exsert pullus ; the callous 

 growth on the spire smooth, shining, microscopically granular, 

 and sculptured with narrow, sharply rounded, sj)iral ridges of 

 unequal size, the larger with two or three smaller ones interposed. 

 Aperture a little more than half the total length. 



Dimensions (mean). — Length, 25; breadth, 9-25; length of 

 aperture, 14. 



Locality. — Upper beds at Muddy Creek. 



3. Ancillaria subgradata, spec. nov. Plate vii., fig. S. 



Shell thin, broadly fusiform, with a moderately long gradated 

 spire ending in a small, smooth, swollen pullus ; whorls rather 

 ventricose, angulated near the posterior suture ; the revolution 

 of the suture marked by a raised thread. 



This species recalls the recent Australian A. cinguhita, but it 

 has a much shorter spire, and the whorls are more sharply 

 angled. 



Dimensions. — Length, 29; breadth, 12-5; leng-th of aperture, 15. 



Locality. — Clayey green-sands Adelaide-bore. 



