224. RECORDS OF THE AUSTRALIAN MUSEUM. 
FILODRILLIA STADIALIS sp. nov. 
(Plate xlii., fig. 10.) 
Shell small, turreted, ovate-fusiform. Colour dull white, the glassy 
opaque protoconch contrasting with the dull texture of the rest of the 
shell. Whorls six, inclusive of a two-whorled protoconch, rather inflated, 
sharply angled at the shoulder. Sculpture:—Five fine close threads 
traverse the fasciole area; below the shoulder angle thirteen spaced cords 
become progressively smaller and closer towards the end of the shell, four 
of these ascending to the penultimate and two to the uppermost whorl ; 
faint curved radial dashes start below the shoulder angle and vanish on 
the base. Aperture open, without varix; sinus broad and deep; canal 
short and open. Length 65 mm., breadth 3 mm. 
Compared with its ally F. ornutau, F. stadialis is a shorter, stouter 
shell, with a more elevated protoconch, fewer spirals, and fainter radials. 
Hab. N.S. Wales:—100 fathoms, Wollongong (type); 80 fathoms, 
Narrabeen (self); 59 fathoms, Wata Mooli (‘ Thetis’’). 
FILODRILLIA STEIRA sp. nov. 
(Plate xlii., fig. 11.) 
Shell small, solid, biconical. Colour uniform pale buff. Suture 
channelled. Whorls seven, of which two constitute the protoconch. 
Sculpture:—The dominant feature is a prominent peripheral keel re- 
volving round all the whorls; the summit of each whorl is crowned by a 
double thread ; along the fasciole area run four slender threads; between 
the keel and the anterior end of the shell occur about twenty cords, 
diminishing progressively as they recede from the periphery ; numerous 
crescentic threads cross the excavate fasciole; fine radial lines also appear 
in the interstices of the basal spirals. Aperture :—Sinus wide and deep, 
canal short and open, a thin film of callus on the upper lip. Length 8mm., 
breadth 3:5 mm. ' 
Compared with A. dilecta this is a shorter, broader shell, and is 
especially distinguished by the prominent single keel on the periphery. 
Hub. N.S. Wales:—50 fathoms, Cape Three Points (type); 950 
fathoms, Botany Heads (“ Thetis”); 59 fathoms, Wata Mooli (“ Thetis’); 
24 fathoms, Cabbage Tree Island (Museum Expedition); 111 fathoms, 
Cape Byron (Halligan); 80 fathoms, Gabo Island (‘‘ Endeavour”); 80 
fathoms, Narrabeen (self). 
FILODRILLIA TROPHONOIDES Verco. 
Drillia trophonoides Vereo, Trans. Roy. Soc. S.A., xxxiii., 1909, p. 303, 
pl. xxvi., figs. 3, 4. 
Hub. South Australia:—150 fathoms, Beachport (type); 55 fathoms; 
Cape Borda; 130 fathoms, Cape Jatta (Vereo). 
