1869.| | MR. G. F, ANGAS ON NEW AUSTRALIAN SHELLS. 47 
white, with a purplish rose-coloured spot at the periphery, and 
another at the junction of the right margin with the body-whorl. 
Diam. maj. 10, min. 8, alt. 73 lines. 
Hab. Ysabel Island, Solomon group. 
This species belongs to the same group as H. ¢ricolor, Pfr., and 
H. purchasi, Pfr. ; I have named it after Mr. Rossiter, of Sydney, to 
the kindness of whose friend Mr. John Brazier I am indebted for a 
specimen of this singularly beautiful shell. 
Heix (GEOTROCHUS) DAMPIERI, n. 8. (Plate II. fig. 6.) 
Shell imperforate, trochiform, rather solid, obliquely faintly irre- 
gularly striated, white, with a narrow pale yellowish-brown band 
just below the suture, a broader one above the periphery darker 
below and becoming nearly black as it approaches the margin of 
the peristome, and a still broader band of the same character at 
the base; spire conoidal; whorls 43, slightly convex, the last de- 
scending, rounded at the periphery, flatly convex at the base; 
columella sloping, aperture oblique, truncately oval; peristome 
expanded and slightly reflexed, the right margin a little sinuous, 
the columellar margin triangularly dilated and furnished within 
with a prominent rounded callus terminating abruptly within the 
aperture. 
Diam. maj. 12, min. 10, alt. 9 lines. 
Hab. Louisiade archipelago. 7 
Hewix (GEOTROCHUS) DONNA-ISABELL&, n. 8. (Plate II. fig. 7.) 
Shell perforate, somewhat depressedly conical, moderately solid, 
very finely malleated by two sets of oblique striz crossing each other 
at right angles above the periphery, whilst below it the malleations 
become more irregular and flowing, pale yellowish brown ornamented 
with a narrow white band below the sutures and one or two dark 
brown bands on each whorl, the upper one being the narrowest ; 
spire conical, apex rather obtuse ; whorls 53, rather convex, the last 
not descending, angled at the periphery, a little convex at the base, 
which has a single broader band of dark brown just below the peri- 
phery ; aperture diagonal, truncately ovate ; peristome white, the 
upper margin narrow, expanded, the lower margin arcuate and re- 
flexed, almost covering the umbilicus. 
Diam. maj. 12, min. 103, alt. 10 lines. 
Hab. Eddystone Island, Solomon Group. 
Herx (TRocHoMoRPHA) EUDORA, n.s. (Plate II. fig. 8.) 
Shell widely and profoundly umbilicated, depressedly conoidal, 
moderately solid, obliquely sculptured with sharp close-set somewhat 
irregular raised striz, pale chestnut-brown ; spire convexly conoidal, 
apex obtuse ; whorls 63, slightly convex, the last carinated at the 
periphery, not descending, convex at the base ; umbilicus one-fifth the 
diameter of the shell; aperture oblique, subangular, interior violet ; 
