107 
a specimen obtained by Mr. Adcock from Macdonnell Bay, and 
by two received by me from the same locality. It is a much 
smaller shell, 2 inches 3 lines, narrower, more regularly and 
abundantly spirally sulcated, and with well-marked numerous 
spiral lire in the throat. Tryon doubts whether it is more than 
an extreme form of /. filamentosa, Lam. (Man., vol. III., p. 76). 
2. F. eoronata, Lam. 
Ref.—Edit. 2, vol. [X., 435 ; Reeve, Mon., t. 6. 
Type specimens from King and Kangaroo Islands. 
Figured and described in Coq. Viv., p. 9, pl. ix., fig. 1, “A 
species rather common.” 
This is one of the most common of our Gasteropods, and one 
of the most variable. Some large specimens may be markedly 
angulated and coronated throughout all their whorls. Others 
may lose both angles and tubercles as early as the fourth whorl. 
These constitute the variety which has usually been regarded as 
F. fusiformis, but in all other respects they correspond with 
F. coronata. Others, after continuing in this form for one or 
two whorls, again assume the typical shape, and so demonstrate 
the freedom from angle and tubercles to be only a partial, and 
not even an individual variation. 
Hab.—Throughout whole South Australian coast-line, at low 
tides attached to rocks. 
Dredged alive, not common, up to 22 fathoms (Verco). Radula, 
pl. mn, figs 8. 
Genus LatirRvs. 
1. L. aurantiacus, Verco. 
fef.—Antea, p. 79. 
Unique. Dredged alive, Backstairs Passage, 185 fathoms 
( Verco). 
2. L. Pulleinei, Verco. 
Ref.—Antea, p. 80. 
Type from Eyre’s Sand Patch, W. Australia. 
Hab.—Largs Bay, St. Vincent Gulf (D. J. Adcock) , sub-fossil 
in dredged silt, Port Adelaide (Perks). 
Genus LATIROFUSUS. 
1. L. nigrofuseus, 7 ate. 
Ref.—Proc. Roy. Soc. S.A., vol. XIV., part IT., p. 258, pl. xi, 
fig. 3. 
Dredged alive, St. Vincent Gulf, 3-4 fathoms (Matthews) - 
? depth (Verco) ; Spencer Gulf, 13 fathoms, 1 (Verco) ; shell sand, 
Aldinga Bay (Aimber) ; Encounter Bay (Adcock). 
