337 
wider than the interspaces, thirteen in the penultimate, un- 
dulating the suture, vanishing on the base of the body-whorl 
and towards the aperture. Articulated with infrasutural 
large irregular blackish-brown blotches, about nine in the 
body-whorl ; and with two similar approximate spiral rows, 
the upper the larger, winding round the base from the back 
of the aperture, below which are dark maculations. <A spiral 
of close-set axial, narrow, brown hair-linés. covers the lower 
third of each spire-whorl, and runs between the two rows of 
larger articulations on the body-whorl. 
Dim.—Length, 12 mm.; body-whorl, 6°25 mm.; width, 
5 mm. 
Locality.—Type, beach Petrel Bay, St. Francis Island, 
many ; MacDonnell Bay, rare. 
It is named after Master Francis Arnold, of St. Francis 
Island, who was of great help to me when collecting on that 
island, made historic by the visits of Matthew Flinders and 
Mons. Baudin. 
at cobioMitra bellapicta, n. sp. Pl. xxv. fig 1. GYD 4 
Shell elongate-oval, of 7 whorls, including a blunt pro- 
toconch of 2 smooth, conyex whorls. Spire-whorls convex, 
fullest just below. the middle. | Sutures linear, impressed. 
Base roundly contracted. Aperture obliquely narrowly oval. 
Canal wide, very short, slightly recurved, scarcely notched. 
Columellar plaits four, strong, the lowest very small. Outer 
lip thin and simple. Axial cost, twelve in the penultimate, 
six in the body-whorl, vanishing towards the base and to- 
wards the aperture; three spiral cords wind over the dorsum 
of the base, above, and smaller than the columellar plaits. 
Colour pinkish-brown. The spire-whorls have a white 
band just below the middle, bounded above and below by a 
line of opaque-white spots, and outside this by a fine broken 
brown hair-line. There is a row of small brown spots below 
the suture. In the body-whorl is also an articulated spiral 
of closely-set, axially-curved white and brown spots, commenc- 
ing just within the back of the aperture. Obscure white and 
brown maculations tint the front of the base. 
Dim.—Length, 9°6 mm.; body-whorl, 5°5 mm.; width, 
51 mm. 
Locality.—Type from 40 fathoms off Beachport, with 12 
others in moderate condition. 
This may be a variety of Mf. vincta, A. Adams (voluto- 
mitra), close to M. weldii, Tenison-Woods. 
Pr 
