1870.] DR. J. C. COX ON NEW AUSTRALIAN SHELLS. 171 
flatly sloping to the centre, causing a subcarinated appearance ; last 
whorl suddenly reflected in front, and contracted near the aperture ; 
aperture very oblique, ear-shaped, margin ivory-white, flatly ex- 
panded, the brown bands on the last whorl abruptly terminating at 
the base of the expanded lip ; margins approaching, joined by a thin 
callus; columellar margin slightly dilated, and inclining to be tuber- 
culated within. 
Hab. New Georgia, Solomon Isles. 
Diameter—greatest 0°95, least 0°70 ; height 0°55 inch. 
4, Hextix macGrecort, Cox. (Plate XVI. fig. 4.) 
Shell very widely umbilicated, flatly discoidal, quite flat on the 
upper surface, widely excavated below, pale yellow brown ; whorls 10 
or 11, very slowly increasing, having a coiled-up appearance as in 
H. polygyrata, coarsely striated; last whorl keeled above, rounded 
below, slightly dilated and much deflected in front ; suture margined ; 
aperture very oblique, ovately rounded; lip with an irregular mar- 
gin, very slightly thickened, not reflected. 
Hab. New Ireland (Brodie). 
Diameter—greatest 0°93, least 0°32; height 0°23 inch. 
This species so much resembles the smaller varieties of H. poly- 
gyrata that it need not be mistaken for any other species ; its coiled- 
up, money-like appearance would at once attract attention. I have 
named it in honour of my late friend Capt. MacGregor, who for 
several years was a most enthusiastic collector among the Solomon 
group of islands. 
5. Hetrx cHancet, Cox. (Plate XVI. fig. 5.) 
Shell imperforate, conoid, faintly striated from above downwards 
with straight strie, and longitudinally striated with more distinct wavy 
striee, white, ornamented -on the centre of the whorls with a broad 
brown band, and round the base with a broad brown zone; spire 
pyramidal, black at the apex ; whorls six, the last rapidly increasing 
in size and inflated, suddenly deflected in front, and contracted be- 
hind the lip; aperture large, irregularly ovately rounded, margins 
approaching, lip slightly thickened and reflected ; columellar margin 
moderately dilated and excavated, and darkened by a black callus. 
Hab. Ysabel Island, Solomon Islands. 
Diameter—greatest 1°30, least 1°07; height 1°25 inch. 
This handsome species is an intermediate form between Helix 
coniformis of Férussac and H. louisiadensis of Forbes, but is of a 
more decidedly trochiform appearance. 
6. Hexix convicta. (Plate XVI. fig. 6.) 
Shell imperforate, solid, orbicularly conoid, transversely faintly 
striated, and decussated with fine longitudinal striz, pale yellowish 
white, ornamented with two narrow brown bands, one near the 
centre of the whorls, the other immediately below the suture, which 
is rather impressed ; spire broadly conical, apex obtuse ; whorls 63, 
