280 
keels joining at the apex to form a tongue; the second whorl 
shows the beginning of a third keel, infrasutural, and dis- 
tinctly smaller: the interspaces are concave and microscopi- 
cally axially striate. Spire-whorls 20, with three spiral ribs; 
one immediately beneath the suture is the narrowest, flat 
on its posterior surface and nearer the middle one than is 
+he lowest ; about one-half the width of the interspaces ; nod- 
ular, especially the central rib; nodules transversely elon- 
gate, fully twice as long as broad, joined in the interspaces 
by oblique, low, very broad, rounded axial coste, much 
wider than their interspaces: faint microscopic accremental 
strie. The last 6 whorls have a supra-sutural smooth thin 
ledge. Aperture broken. Colour uniformly light-horn tint; 
the posterior spiral distinctly darker. 
Dim.—Length, 12 mm. (probably 14 when perfect) : 
breadth, 16 mm. 
Locality.—Type Gulf St. Vincent, depth unrecorded, 
with 2 other examples; in 55 fathoms off Cape Borda, 1 dead. 
One of the co-types shows two smooth spirals on the 
base, a nearly oblong mouth, and an anterior canal, curved 
to the left, reflected and notched. 
DAL hAAGAA _. Piet , SK 
ae Triphora spina, n, sp. Pl. xxii., tigs. 2, 5, and 4.°4 4 
Shell sinistral, elongate-subulate-pyramidal. Protoconch’ 
of 4 turns, apex prominent and tongue-like, whorls smooth, 
centrally boldly angled, concave between the median angu- 
lations. Suture linear. Spire-whorls 17, with four ribs; 
the largest is the continuation of the nuclear angulation ; 
above this is a much smaller infra-sutural rib, below it the 
shell wall seems thinner and less opaque: then comes a bold 
rib, and close below it a supra-sutural rib. They are slightly 
tuberculate with low transverse nodules, united by low broad 
oblique axial cost, most marked between the upper two 
ribs, but connecting the upper three: the supra-marginal 
rib is smooth, and wedged in between the two adjacent ribs. 
Aperture roundly rhomboidal; outer lip crenulated by the 
spirals, antecurrent into a spur towards the front; canal 
nearly closed at this point, curved to the left, and reflected ; 
back of the aperture pinched at the suture, but no sutural 
notch. Base smooth, with one spiral. Colour, light-amber 
tint. 
Dim.—Length, 12°4 mm.; width, 19 mm. 
Locality.—Type, 110 fathoms off Beachport, with 2 
others perfect and 11 broken, in 150 fathoms 6 moderate, 
and in 200 fathoms 3 poor; in 90 fathoms off Cape Jaffa, 7 
perfect and 14 broken, and in 130 fathoms 3 broken. 

