00 
South Australian Shells. 
S.A. NAT., VOL. XIV 
May, 1933 . 
posteriorly ; dorsal surface flat sloping towards the 
posterior extremity; mantle ^nothaeum) fairly ample^ 
sliglu ly waved alone the edge, and extending front 
behind the rhinophores; ornamented longitudinally, with" a series 
of roLighI}- parallel, black and yellowish, undulating ridges, the 
medial of which extending throughout the whole length, the lat- 
eral passing out at the sides, bordered with yellow; the lobe-IIke 
veil is colourless, edged with yellow, and with a few yellotr 
spots in its centre; foot dilated laterally in front, tapering behind; 
ilie edge waved and extending to beyond the sides of body; it 
is flat, grooved longitudinally along the centre posteriorly,’ and 
does not project appreciably behind the mantle; rhinophores 
longitudinally laminate, pink, contractile; branchiae pink, on 
the under sicle of the lateral projection of the mantle: mouth pro- 
minent: genital orifice and anus prominent on the right side, the 
latter 19 mm. beliind the former; entire under surface a uniform^ 
light crimson. Length 82, breadth 34 mm. Antechamber Bay 
(Kangaroo Island). 20 fathoms; Gulf St. Vincent. Also Swan 
River W'.A. Rare, and appears not to inhabit the beach ^one. 
(Type locality — Swan River, \'\'estern Australia). Basedow and 
Hedley state that their specimen was kept alive for several davs 
in a glass of sea-water, and it was still alive when transferred to 
the preservative; it has retained its colour remarkably well In 
a weak solution (3 per cent.) of formalin. 
ARGIDAE (:= Dorkrulae). 
Ammai (d variable form, general!)- depressed; mantle ovak 
cuvenng the head and greater part of bod\-; buccal tentacles III 
aeveioped; branchiae veneralh' retractile, on the posterior or 
mcdio-postcrior part of the back, usually forming a circle round 
the anus: skin strengthened with spicules, more or less definitely 
arranged. DIstribig:Ion — All seas. 
Archidoris. Bergh 1878. Animal elllpticai, of soft consis- 
tency, plump, slighti)' depressed; back more or less granular or 
tuberculate, the opening for the rhinophores simple; tentacles 
r.hort, tlfick folds at the sides of the small head, wj.th an externaf 
furrow; the retractile gill composed of a few-tri- or quadri-pinnate 
leaves; toot broad, with a furrow at the anterior margin* the 
labial disc mcreh' clothed by a simple cuticle. T\-pe — Rons tu~ 
berculata Alder k. blancock. (= Archidoris britannica Johnston 
1S38 [Kuropc|). Iflie genus is probably cosmopolitan, but most 
abundant in temperate seas. 
A. varia. Abraham 1877 (Doris) (— Doris variabilis Anga? 
1864, preoccupied b\' Kelaart 1859; = D. praetenera Abraham 
1877). PI. 2, fig. 6, 7, and pi. 4, figs. 11-13. Animal elliptical, de^ 
pressed, with varied coloration; a beautiful shade of orange, in 
