24 RN. Kilburn 
band. Aperture somewhat lanceolate, but obliquely truncate posteriorly, widest anterior to middle, 
outer lip in side view very shallowly sigmoid and very slightly prosocline, with two very blunt basal. 
denticles, one on each side of termination of posterior fasciolar band; siphonal notch moderate, 
broadly and asymmetrically U-shaped. Columella pillar strongly twisted, its termination acute, with 
a very deep, inverted L-shaped basal notch; pleats 4—6, the innermost weak, outermost separated by a 
slightly wider and deeper groove; microshagreen sculpture not visible. Anterior fasciolar groove. 
fairly deep and wide for genus, continuing posteriorly to form a very slight false umbilicus at midline 
of inner lip; inner lip shallowly concave anteriorly, apart from a slight convexity anterior to level of 
false umbilicus; parietal region weakly convex with faint traces of several transverse pleats. Anterior 
and posterior fasciolar bands each flattened to concave, moderately declivous, posterior margin 
raised prominently above ancillid band and delimited by a furrow; ancillid groove moderately deep, 
its band very slightly rounded, either level with median zone or sunken; median zone with fine | 
growth lines only. Number of teleoconch whorls probably about 5. 
Protoconch limits not clear, protoconch 1 flattened. 
Median zone pale buff to cream; posterior band darker (deep to pale buff), spire callus deposit tinged 
with orange-buff or yellow. | 
Dimensions: 53.8 х 19.6 mm (holotype); 62.7 х 24.4 mm (larger paratype). 
Type material: Holotype Natal Museum L1607/T980, don. H. Danila. Two paratypes in collection H. . 
Danila. | 
Type locality: Saya de Malha Bank, 1989. 
Plate2. Amalda rubiginosa (Swainson, 1825): holotype of Ancillaria rubiginosa, Natural History Museum, London, ` 
19785, dimensions 68.4 x 27.5 mm, “China”. 
