. Bulletin of the Natural History Museum Zoology. . 17 Figs 14-17 Opercula. 14 Typhlomangelia adenica Sysoev, new species, paratype, stn 185, H = mm; 15—77 maldivica Sysoev, new species, para- type, stn 143, H = mm; 16- Bathytoma (Parabathytoma) regnans Melvill, 1918, stn 34, H = mm; 17-5. (P.) fissa (von Martens, 1901), stn 176, H = mm. Scale-line = mm. Genus SPLENDRILLIA Hedley, 1922 Type species: Drillia woodsi Beddome, 1883 (original designation) Splendrillia zanzibarica Sysoev, new species Figs 1,10 & 22 Material, stn 119, 1 specimen (holotype, No. 1993089) and
. Bulletin of the Natural History Museum Zoology. . 17 Figs 14-17 Opercula. 14 Typhlomangelia adenica Sysoev, new species, paratype, stn 185, H = mm; 15—77 maldivica Sysoev, new species, para- type, stn 143, H = mm; 16- Bathytoma (Parabathytoma) regnans Melvill, 1918, stn 34, H = mm; 17-5. (P.) fissa (von Martens, 1901), stn 176, H = mm. Scale-line = mm. Genus SPLENDRILLIA Hedley, 1922 Type species: Drillia woodsi Beddome, 1883 (original designation) Splendrillia zanzibarica Sysoev, new species Figs 1,10 & 22 Material, stn 119, 1 specimen (holotype, No. 1993089) and 1 shell (paratype, No. 1993090). Description of holotype. The shell is of medium size for the genus, slender, angularly claviform, grayish-white with dull surface, rather thin, consisting of remained whorls. The protoconch is missing; the bluntly closed beginning of initial teleoconch whorls is seen in the shell apex. The whorls are angled slightly above the periphery, concave above the angulation and almost flat below it. Sutures are clear, shallow, slightly wavy. The spire is high, occupying about of the shell height. Axial sculpture consists of strong oblique folds, rapidly disappearing on subsutural slope and forming pointed tubercles at the whorl periphery. Intervals between folds are narrower than the folds themselves. The folds reach the lower part of the shell base but weaken greatly on the last third of the body whorl. There are about 15 folds on the body whorl and 12 on the penultimate. Spiral sculpture is absent except for very indistinct striation seen only on the shell base near aperture. The aperture is oval and gradually narrows towards the canal. The inner lip is covered by a longitudinally rugose callus. The anal sinus is rather shallow, broadly open, with the edge somewhat spout-like. The canal is moderately long and wide. H = , Hb = , Ha = , D = mm. The operculum is oblanceolate, with a terminal nucleus. Radula is typical for the genu
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