Two new species of Amalda B 
midline of inner lip; inner lip evenly concave anteriorly, in parietal region becoming convex with 5 
weak transverse pleats. Anterior fasciolar band convex, posterior fasciolar band flattened and slightly 
declivous, its posterior margin raised prominently above ancillid band and delimited by a deep 
furrow; ancillid groove moderately deep, its band very slightly rounded and declivous; median zone 
with fine growth lines only. Number of teleoconch whorls indeterminate. 
Protoconch conically-domed, of about 2,5 whorls (limit not clear), protoconch 1 small and depressed; 
breadth about 1.7 mm. 
Median zone greyish-white; callus deposits pure white, except for a deep brownish-orange blotch 
encircling apex (but not colouring protoconch), and a pale buff zone below suture of body whorl 
dorsally and a faint buff tinge on adjacent spire callus. 
Dimensions: 34.4 x 15.1 mm, aperture 17.3 mm (holotype); largest paratype 44.6 x 22.7 mm. 
tee material: Holotype Natal Museum L1606/T979, don H. Danila. Three paratypes in collection 
. Danila. 
Type locality: Saya de Malha Bank. 1989, No other details are provided, but the holotype may be 
from the sample for which Bondarev & Róckel (1992) give the depth as 60 m. 
Notes: In shape and spire characters, Amalda danilai would appear to be a typical member of 
Subgenus Alocospira Cossmann, 1899, yet the development of a false umbilicus, albeit slight, could 
also be interpreted as associating it with the genus Eburna Lamarck, 1801. Indeed Voskuil (1991), in 
à review of that genus, regarded Amalda as a subgenus of Eburna, although proposing that the 
former should be restricted to western hemisphere species. A possible sister species to A. danilai is 
Ancilla nitida Wanner & Hahn, 1935, from the lower Miocene of Java, which has a similar coarsely 
grooved spire callus, deeply notched columella base and a false umbilicus that is even more deeply 
perforate, Treating the distinct false umbilicus as apomorphic, Kilburn (1981) suggested that nitida 
could be regarded as an Indo-Pacific representative of Eburna. However, it is more likely that the 
development of a false umbilicus is convergent, and both nitida and danilai are here referred to 
Amalda s.l.. 
Amalda nitida differs from A. danilai in its much deeper false umbilicus, spirally grooved posterior 
fasciolar band and more strongly furrowed spire callus. Of Recent species, A. danilai shows closest 
similarity to Amalda mamillata (Hinds, 1844) of the South China Sea, which differs in having more 
numerous spiral ridges and stronger microshagreen sculpture on the spire, a non-mamillate apex, 
shallower columella notch, no false umbilicus and different coloration. 
Etymology: Named in honour of Mr Henrikas Danila. 
Amalda trippneri sp. n. 
РІ. 1, figs 3-4 
Ancilla rubiginosa (non Swainson, 1825); Melvill 1909: 113. 
Ancilla sp; Bondarev & Röckel 1992: 30, colour figs 2-3 (p. 31). 
Description: Shell fusiform with moderately broad base, breadth/length 0.36-0.39, body whorl gently 
and more or less evenly convex on both sides, greatest width of shell anterior to median, aperture 
length/total length 0.44—0.45; spire narrowly cyrtoconoid with blunt apex, spire angle 319-357. 
Етппагу spire callus thick and enveloping entire spire except for protoconch 1, only slightly 
Impressed at suture, surface of callus glossy, not microshagreened, but with spiral ridges more or less 
Visible under surface, not apparent in relief, except sometimes for about 5 lirae on 1st teleoconch 
Whorl and 1-3 above suture on penultimate whorl; secondary callus forms a pad covering right side 
Of spire from 2nd teleoconch whorl on, with a narrow anterior extension reaching posterior fasciolar 
