1877.] MR. G. F. ANGAS ON NEW MARINE SHELLS. 37 
suture being crossed with delicate crescent-shaped descending strize ; 
spire sharp ; aperture elongately ovate; outer lip simple, a little con- 
tracted below ; posterior sinus moderate ; canal short, scarcely re- 
curved. 
Length 1 inch, breadth 4 lines. 
Hab. Coasts of New South Wales. 
This species is allied to D. harpularia, Des Moul., from South 
Australia, but differs from it in having transverse ribs on the lower 
whorl, and being nodulous at the summits of the longitudinal plice. 
The aperture also differs in form. 
There are specimens of this shell in the British Museum, from 
New Zealand, which have the ribs and nodulous sculpture more 
prominent than in the type. There are also 2 examples of a variety 
of a uniform dull yellow colour. 
MANGELIA JACKSONENSIS, n. sp. (Plate V. fig. 10.) 
Shell elongately fusiformly turreted, solid, pale fulvous yellow ; 
whorls 7, angulated and flattened at the upper part, longitudinally 
somewhat prominently ribbed, the ribs slightly nodulous at the 
angle of the whorl, the interstices crossed with narrow grooved lines 
in pairs, which are interrupted by the longitudinal ribs; aperture 
elongately ovate ; outer lip thin, simple; base of columella some- 
times tinged with brown ; posterior sinus very shallow. 
Length 7, breadth 2 lines. 
Hab. Dredged off Port-Jackson Heads in 25 fathoms (Brazier). 
MANGELIA FLAVESCENS, 0. sp. (Plate V. fig. 11.) 
Shell ovately fusiformly turreted, solid, pale buff, sometimes 
tinged with yellowish orange on the ribs; whorls 6}, conspicuously 
angled below the sutures and longitudinally distantly stoutly ribbed, 
the ribs sharply nodulous at the angle, the lower half of the last 
whorl finely transversely ridged; aperture elongately ovate, outer 
lip flattened inwards ; posterior sinus moderate, slanting upwards. 
Alt. 25 lines, diam. 1} line. 
Hab. Port Jackson (Brazier). 
In one specimen the ribs are suffused with orange at the angle. 
CLATHURELLA BRENCHLEYI, n. sp. (Plate V. fig. 12.) 
Shell fusiformly turreted, moderately solid, light brown inclining 
to ash-colour towards the apex ; whorls 8, slightly angulated at the 
upper part, and somewhat compressed next the sutures, longitudi- 
nally more or less prominently ribbed, the ribs crossed with regular 
elevated ridges, which are less distinct below the sutures, from which 
descend very fine and close-set crescent-shaped strize as far as the 
angle of the whorl, crossing the concentric lines; spire sharp, apex 
dark brown or purple; aperture elongately ovate, brown within ; 
outer lip denticulated at the edge, crenate within, and margined 
with white; posterior sinus broad and shallow; canal short, wide, 
and recurved. 
Length 9, breadth 3 lines. 
Hab. Port Stephens, New South Wales (Brazier), 
