;84 
South JnstmUan Siidls. 
S.A. NAT., V-DL, X!V. 
May, 1953. 
suture fissured. Heidn 25, diam. 17 mm. Dredged (uilf St. 
\incent 5 fathoms. Also Albany W.A. (Type locality— King 
■Cmorge Sound .A.) Has almost entirely the form of the fratnle 
A. biillaia Muller, (the ty^e of the genus, a British species) only 
the outer hp is more developed and the mouth wider below. 
BULLARIIDAE. 
Globose, oval, or oblong-ct lindric, vertex umbilicated (rarely 
■covered) and sunken spire, mottled colour-pattern, and smijothisli 
surface: mouth as high as the shell, rising above the vertex, 
narrow aho\'c. dilated below; columella concave, simple, with 
reflexed crescent callus, no fold. Distribution — Warm and tem- 
perate seas, hossil — Lretaceous. ‘ Animal completely retractive, 
with a large head-disc, truncated in front, bilobed behind, bearing 
eyes about the middle; no epipodial or parapodial lobes; foot 
'long, tapering behind; stomach contains three dnmb-bell-shared 
chitinous plates. Sexes united. Herbivorous. 
BuIIaria Rafmcsqtie 1815 (= BuUa Linne 1758). Oval, 
compactly involute, generally solid and with mottled coloiir- 
pattern; spire sunken, umbilicated; mouth as high as the siiell, 
rising slightly above the xertex, its upper portion narrow, ex- 
panded towards the base; outer lip simple, flexuous; columella 
short and conca\'e. with a crescentic white reflexed callus; parietal 
tvall smooth, witli a light callus. Type — HuUa ampulla Linne. 
Species of this genus inhabit sandy mud-flats, the slimy banks of 
river-mouths and brackish places near the sea; at low water some 
ccmccal themselves in the mud and under seaweed, exiidine large 
quantities of mucus to maintain the moisture of their skin. 
B. botanica Hedley 1918 (new name for B. australis (way 
1825: not B. australis Perussac 1822: = B. ohlonga .A. Adams 
1854). I^l. ], fig. 13. "The Merbivourom^ Biillaria.'^ Oval-cyjin- 
drlc. rather thin, shining; yellowish-brown, marbled witli darker, 
sometimes spiral!)' banded; growth lines distinct, flexuous. rib- 
lique; spiral striations very fine and dense, the striae distinctly 
^\■avy; spire sunken, vertex with a narrow deep, not pcrspecrive, 
umbilicus, with spiral striation; bod)’ whorl elongate-oval, narrow- 
ed above, convex, but somewhat flattened on the last half-liirn: 
base rounded; mouth high, extending beyond the spire, narrow 
above, enlarged tOAvard the base; outer lip thin, sharp, narrowly 
rounded above, flatly convex in the middle; basal lip regularly 
arched; columella short, concave; inner lip reflexed over the pillar. 
Height 50. diam. 33 mm. Common along the whole South Aus- 
tralian shore fine: also Western Australia to Bunbut) . Beach 
and dredged to 28 fathoms. (Type locality — King George Sounif 
W.A.) Alan)' cast up alive at Stansbury, Yorke Peninsula, also 
in the mud of Onkaparinga River above Port Noarlunga town 
