A REVISION OF THE AUSTRALIAN TURRIDH—HEDLEY. 283 
HitR®MA RAVELLA sp. wov. 
(Plate xlvii., fig. 54.) 
Shell elongate biconic, a flat sloping shoulder and a perpendicular 
periphery giving it a pagodiform aspect. Colour buff, sometimes with 
pale yellow bands on the last whorl, on the outer lip lemon yellow, 
sometimes with chocolate on the pillar. Whorls seven, including the 
protoconch, which consists of a small rounded upstanding whorl, followed 
by two sharply keeled whorls. Sculpture :—On the last whorl are twenty- 
two spirals, of which three on the periphery are most prominent; the 
radials are not consecutive, they increase from nine on the early whorls 
to fifteen on the last; they are slight near the suture, prominent on the 
periphery, and absent on the base; they are over-ridden by the spirals, 
which form deep meshes on the periphery, a double row on the last whorl 
and a single one above. Aperture :—The prominent varix spreads a broad 
tooth-edged lip over the mouth; it is excavated above in a spout-like 
sinus ; at the lip insertion is a massive coloured tubercle; within the lip 
are four or five entering plications; across the columella are two transverse 
plaits; canal short. Length 5 mm., breadth 2.2 mm. 
This species is related to H. elegans, but that is smaller, more slender, 
with an unarmed columella, and lattice sculpture on the periphery. 
Hab. Queensland :—-4 to 14 fathoms, Albany Passage (type); 8 
fathoms, Weary Bay; 5 to 10 fathoms, Hope Island; 5 fathoms, Van 
Diemens Inlet; 5 fathoms, off Horsey River, Gulf of Carpentaria (self) ; 
10 fathoms, Cape Sidmouth (Henn). 
ETREMA SPARULA sp. nov. 
(Plate xlvii., fig. 85.) 
Shell large, broad, and comparatively thin, conic-fusiform, contracted 
at the base, turreted, last whorl about as long as the spire. Whorls eight, 
including the protoconch, which is mucronate of two whorls, the first flat- 
topped, the next keeled. Suture canaliculate. Colour buff, finely speckled 
with chestnut, the spots larger and darker near the suture, with a pale 
zone below the periphery. Sculpture:—The ribs are low, round-backed, 
sharply angled at the shoulder, vanishing on the base and round the 
fasciole area, spaced at twelve to a whorl; the whole shell is wrapped in 
sharp narrow threads, which swell on crossing a rib and shrink in the 
interval; they are parted by furrows deeper than wide, and support 
microscopic close-set transverse beads; on the penultimate there are 
about twenty-three and on the last whorl about sixty of these cords. 
Aperture :—The variceal ridge is tall and narrow, from which extends 
squarely a free limb dentate at the edge and slightly ribbed within; sinus 
rather deep and C-shaped; a callus tubercle at the right insertion is 
tricuspid ; on the inner lip the callous sheet thins off to a fine edge, and 
has a few faint plications anteriorly; canal short, broad, and recurved. 
Length 17 mm., breadth 7:5 mm. 
