286 
and subdistant axial bars. Generally the second is swollen 
and lies somewhat out of the axis of the shell, causing the 
mamillate form. Rarely the first whorl may be as large as 
the second. This protoconch seems complete, and not the 
base of a spiculate protoconch, whose terminal whorls have 
fallen. The shell varies in shape, being short, broad, and 
pupeform, or long, narrow, and elongate-pyramidal. 
Dredged in Gulf St. Vincent, 7 perfect and 7 poor; im 
90 fathoms off Cape Jaffa, 2 good; in 150 fathoms off Beach- 
port, 2 poor. Taken on the beach MacDonnell Bay, 1; Gulf 
St. Vincent, 23, in varying condition; Venus Bay, 2, good. 
The very different protoconch makes me diffident about 
calling this a variety, inasmuch as the characters of the pro- 
' toconch are generally regarded as very certain specific diag- 
nostics: but the shells are otherwise indistinguishable. 
o hs losinisle Triphora granifera, Brazier. 35 f 
Triforis graniferus, Brazier, Proc. Linn, Soc., New South 
Wales, 1894, vol. ix., 2nd ser., p. 173, pl. xiv., fig. 10, Port 
Jackson. 
Triphora granifera, Brazier, Hedley, op. cit., 1908 (1902), 
. 610, pl. xxxii., figs. 28 and 29; Pritchard and Gatliff, Proc. 
Roy. Soc., Victoria, 1906 (1905), vol. xviii. (N.S.), p. 60, Wes- 
tern Port. 
Taken on the beach from MacDonnell Bay to Scales 
Bay, and St. Francis Island. Dredged in 6, 14, 20, 22 
fathoms in Gulf St. Vincent and off St. Francis Island, alive ; 
in 35 fathoms off St. Francis Island, 3 poor: in 40 fathoms. 
off Beachport, 4 good, 11 poor: in 62 fathoms off Cape Borda, 
3 poor: in 110 fathoms off Beachport, 2 moderate; in 130: 
fathoms off Cape Jaffa, 1 moderate: in 300 fathoms off Beach- 
port, 1 good and 1 moderate. This appears to be a littoral 
form, extending up to 22 fathoms: beyond that depth the 
shells are mostly dead and decolourized. : 
The length of the type is 4 mm., but it may be 5'7 mm. 
or 2°9 mm. Sometimes the shell has the lowest pearl row the 
largest, and the highest the smallest, so that the whorls are 
imbricating or pagoda-like. Sometimes the supra-sutural 
threadlet stands out as a distinct low, small pearl row. One 
adult micromorph has the lowest pearl row relatively very 
large, so as to suggest 7’. pfeiffer’, Crosse, but the short, thick 
figure is that of granifera. The South Australian shells are 
very rarely wholly dark- or light-brown like the Sydney speci- 
mens, but are a glistening, translucent white, with brown, 
squarish blotches. These may be quite dark or very pale, 
large or small, few or many, so as to make the shell nearly 
white or nearly brown. 
