S.A. NAT., VOL. XVI. 
April 10th, 1935. By Bernard C. Cotton an 
umbilicus and attached to the columella 
Operculum corneous, multispiral, nucleu 
fringe-like film over the inner portion of each spiral. Radula 
formula — oc . 1. 5. 1. 5. 1. cc . Central rachidian heart-shaped, 
the other rachidians with trilobed cusps, a single lateral with one 
cusp trilobed at its base; marginals many, unicuspidate, not ser- 
rated. Genotype — Astele collision Verco. 
A. subcarinatum Swainson 1854 (= Eutrochus perspectivus 
A. Adams 1863: — 'ZAzyphinus subgranularis Dunker 1871: — C. 
adamsi Pilsbrv 1889). The Subcarinate * Astele. PI. 1, fig. 11. 
Shell broader than high; pale fawn colour with faint transverse 
waves of reddish brown; whorls above scarcely convex, marked 
by six to seven elevated, smooth, convex striae, which leave a 
flattened margined rim at the top of each whorl; body whorl 
beneath marked with concentric grooves which are decussated 
near the umbilicus; margin of body whorl slightly carinated; 
there is a depression between the margin and the second elevated 
stria on the upper surface, the first, or that next the margin being 
very slender; the striae on the base assume the appearance of 
grooves, which are wider apart as they approach the umbilicus, 
and the three more immediately adjoining are crossed by trans- 
verse striae which produce a granulated appearance; umbilicus 
interior white. Height 25, diam. 37 mm. Dredged — Beachport 
to Francis Island, 12 — 200 fathoms. Also dredged Western Aus- 
tralia — Hopetoun, 35 fathoms. (Type locality — Tasmania). 
Verco took this species alive in Gulf St. Vincent in 164 fathoms, 
in mud and pieces of coralline, in association with Surcula quoyi . 
The foot is greyish white mottled with rusty brown. Its upper 
surface is close-lined obliquely from behind forwards with brown, 
and has minute white spots. The operculum is large, round, 
corneous, and multispiral, with an ovate central nucleus. The 
tentacles are of moderate length, spotted light brown and white; 
the eyes are at the outer and dorsal side of their extreme bases. 
There are four white cirri on each side projecting from the mar- 
gin of the mantle and this is minutely fimbriated, except a white 
thin wavy lappet from just behind the eye to the first cirrus 
which is entire in its margin. The formula of the radula is 24. 
1. (1.4. 1.4. 1.) 1. 24, — 85 rows The marginals are long and 
narrow, diminishing outwardly and well serrated at the distal 
margin. The lateral is very large and thick and possesses two 
stout cusps. The most external rachidian is the largest and has 
a large unserrated cusp. Then follow four rachidians each with 
a long narrow tongue-like serrated cusp. The central has also 
a long narrow serrated cusp. 
A. scitulum A. Adams 1854 (Z izyphvnus) . PI. 1, fig. 12. 
“The Elegant Astelena.” Shell small, thin, umbilicate, with 
slender elevated spire and broad body whorl; yellowish, obscurely 
