S.A. XAT , VOL. XIV. 
May, 19 . 33 . By B^nuird ('!ot^on and !' . k. Godjiry. 
87 
APLUSTRIDAE. 
S]>ire ^usualh^ short, last whorl inflated; mouth distinctly ef- 
fuse below, columella somewhat tliickened, rarely twisted, but 
alwa) s anteriorly truncated. Distribution — Tropical and sub- 
t:'(>pical, chiefly Coral Reefs, Hast Indies. Fossil — Jurassic. An- 
imal, head with the frontal disc produced into large ear-like ten- 
tacular lobes folded back over the back of the shell, and furnished 
with bifid labial appendages: eyes sessile at the inner bases of the 
tentacular lobes; mantle with the inner margin thin and mcm- 
branouSj the outer forming a thick, fleshy lobe, curving round 
tlie spire of the shell; branchial plume long and single; foot 
large and membranous, auriculate in front, rounded behind. 
Aplustrum Schumacher 1817. Aplustre, the carved stern of 
a ship with its ornaments. Shell oval, thin, vividly coloured 
banded; covered with a thick horny periostracum; spire wide, 
depressed; columella truncated at the base, the aperture notched 
there; outer lip sharp, d^pt ^ — BuHa aphistre Linne (Philippines). 
A. brazieri Angas 1877 ( Dlaphana) , PI. 1, fig. IS. '‘Bra- 
txier’s Aplustrum.” Subglobose, thin;- hyaline; periostracum olive, 
fine, membranaceous; spire flatly depressed; whorls three-and-a- 
Italf, rounded above; last whorl inflated; suture impressed; mouth 
contracted above, subovate below; outer lip sharply angled pos- 
tcxfioilly. :slig-htly sinuous, arcuate ^bclow: columella abruptly 
truncate below the long, narrow, open umbilicus. Height 4, 
diam. .3 mm. \ cry rare in South Australia. Dredged — bfeptune 
Islands, 104 fathoms. (Type locality — ‘‘Sow and Pigs,” Port 
Jackson in four fathoms, sandy mud, on weeds). Shell like 
Diaphana, but cohimclla abruptly ^truncated beloW. Pi1sbr\- 
introduced section Anstroclia^phana, type — D\ hrazidri Angas, 
which Medley considered should rank as a subgenus, {Austro- 
iuiphana Pilsbry, Man. Conch. X\h, p. 287). 
PHILINIDAE. 
Shell capable of containing but a small part of the body, en- 
tirely interna], covered by the reflexed and united mantle: whitish, 
fragile, of one or two whorls; spire sunken (jr absent, 
mouth extremelv large, the outer lip often prcKluced In a lobe 
or point above. Distribution — All seas, from low-water mark 
a depth of about 1,000 fathoms. Fossil — Cretaceous, Animal 
n ith the body oblong", the Iicad-sltield having no tentacular pro- 
cesses, provided with sessile eyc.s or without them; foot trun- 
cated or rounded behind; parapodial lobes very large and con- 
spicuous, more or less folded over the back. 
Philine Ascaniiis 1772. Ovate, or squarish, thin, fragile, 
translucent, pale-coloured; smooth spirally striate or punctuate, 
or latticed; spire sunken; whorls few, loosely coiled, which are 
