78 CERNOHORSKY 
Subgenus Costellaria Swainson, 1840 
Costellaria Swainson, 1840, Treat.Malac. pp.130,320. Type species by M Mitra rigida 
Swainson, 1821 = M.semifasciata Lamarck, 1811. Recent, Indo-Pacific. 
Vexillum (Costellaria) albatum nom. n. (Figs. 5,6) 
1872. Turricula (Thala) casta H.Adams, Proc.Zool.Soc.Lond. p.9, pl.3,fig.2. 
1874. Mitra hastata Sowerby, Thes.Conchyl. 4:35,pl.27 (378), fig.620 [nom.subst.pro 
Turricula (Thala) casta H.Adams, 1872] (non Mitra hastata Karsten, 1849). 
TYPE LOCALITY. Red Sea. 
DISTRIBUTION, From the Red Sea and the Persian Gulf to Hawaii and the Society Is, 
French Polynesia, from 20 — 400 m. 
Reunion I record: St.DC126, 20°52’S & 55°38’E, 110 m (2); St.CP57, 21°0S’S & 
55°11’E, 210-227 m (27); St.DR47, 21°23’S & 55°37, 205-215 m (1). 
Type specimens. The type specimen of Turricula casta H.Adams (which is also the type 
of Mitra hastata Sowerby), bears the British Museum (N.H.) registration No. 
1872.4.9.9., however, the type itself has not been located in the Mollusca section of the 
Museum (K.Way, in litt. 25-2-1987). I have also been unable to locate the type 
specimen on my two visits to the British Museum (N.H.) in 1968 and 1973. The species, 
however, is clearly recognisable from the original type-figure and description. 
Sowerby (1874) considered Turricula casta H.Adams,1872,to be a homonym of 
the well established Voluta casta Gmelin, 1791 (= Scabricola (Swainsonia) casta) and 
proposed the substitute name Mitra hastata. Although Turricula casta H.Adams is 
not a secondary homonym according to modern taxonomic rules, the taxon is 
permanently invalid according to article 59(b) since it has been replaced as a 
homonym prior to 1961 (Code of ICZN, 1985). Sowerby’s substitute name Mitra 
hastata is also taxonomically unavailable since it is a primary homonym of Mitra 
hastata Karsten, 1849, which is a Vexillum (Costellaria) species from the Chattian, 
Upper Oligocene of the North Sea Basin. 
Family NASSARIIDAE 
Genus Nassarius Duméril, 1806 
Nassarius Dumeéril, 1806, Zool. Analytique p.166. Type species by SM (Froriep, 1806) 
Buccinum arcularia Linnaeus, 1758. Recent, Indo-Pacific. 
Subgenus Zeuxis H. & A. Adams, 1853 
Zeuxis H. & A. Adams, 1853, Gen.Rec.Moll. 1:119. Type species by SD (Cossmann, 1901) 
Buccinum taenia Gmelin, 1791 = B.olivaceum Bruguiére, 1789. Recent, Indo-Pacific. 
