307 
Gibbula reedi, n. sp.- Pl. xxix., fig. 5. W/ELa 
Shell solid, depressed conoid. Whorls, 4 smooth, flatly 
convex, slightly hollowed just below the suture. Summit 
blunt. Suture impressed. Periphery round, barely angu- 
late. Base convex. Umbilicus moderate. Aperture oblique, 
roundly elliptical; outer lip simple, bevelled inside; a short 
thin glaze on the base of the whorl; columella arcuate, evert- 
ed posteriorly, with a tiny notch where it joins the round 
basal lip at the end of the bordering lira of the umbilicus; 
throat smooth and iridescent. Sculpture: the dorsum looks 
as though it were spirally lirate, but is really quite smooth 
except for very fine miscroscopic curved retrocurrent accre- 
mental scratchings. On the base are about a dozen fine spiral 
incisions, with radial scratch-marks more valid and distant 
than on the dorsum; these are still stouter and wrinkling 
within and near the perforation. An inconspicuous lira bor- 
ders the umbilicus, which has a shallow groove just above it. 
Colour, chestnut-brown, with dark-brown spiral hair-lines of 
varying width; dotted with tiny white spots, which, below 
the suture, are aggregated into small pyramidal blotches with 
their apex upward, six in the body-whorl. A white band, 
scalloped on both edges of these aggregated dots, encircles the 
periphery. An articulated white-and-brown spiral orna- 
ments the lira bordering the umbilicus, a second lies just out- 
side this, and another with more distant double white spots 
beyond; the rest of the base, which is of a lighter tint than 
the dorsum, has scattered tiny white dots. The umbilicus is 
white. Over all is a transparent glaze, with a bronze reflex. 
Dim.—Greatest diameter, 6°2 mm.; smallest, 5 mm.; 
height, 3mm. The species may reach 7°2 mm. 
Locality.—The beach, Holdfast Bay (Tate); lLeven’s 
Beach, Yorke Peninsula (Zietz). It seems to be quite’ lit- 
toral. I have not dredged it. 
There may be a faint gutter where the labrum joins the 
body-whorl. The colour may be dark-brown. The peri- 
pheral white band may fade out toward the aperture. The 
white blotches beneath the suture and the articulated bands 
around the perforation seem the most constant ornament. 
It was formerly called in South Australia Gibbula Fes- 
serula, Ten. Woods, and was so catalogued as No. 348 in Ad- 
cock’s Handlist of the Aquatic Moll. of South Australia, 
1893, but his species has been recognized as an immature 
Diloma Adelaide, Philippi. 
It has been named after Mr. Walter Reed, a South Aus- 
tralian collector, who took it on our shores. 
