Eucytherura downingae (Coles & Whatley, 1989)

Fig. 4 E

Eucytherura sp. 3 Whatley & Coles, 1987: pI. 3, fig. 19.

"? Gen. et sp. 3" Ruan & Hao, 1988: 389; pI. 45, fig. 22.

"Gen. 1 et sp." Ruan, 1989: 131; pI. 24, figs 15,16.

Parahemingwayella downingae Coles & Whatley, 1989: 91; pI. 2, figs 14-16.

" Eucytherura batalaria" Ayress, 1988 * (in part), p. 582, pI. 20, fig. 5.

Remarks. This species is closely similar to the Pacific Eucytherura batalaria n.sp. but differs from that species in having a posterodorsal tubercle and less rugose ornament. The specimen illustrated by Whatley & Coles (1987) displays a rather weakly developed posteroventral tubercle and is here considered to be a variant of this species. Ruan & Hao (1988) illustrate a very similar form found in Quaternary sediments of the Okinawa Trough which, although it has an unusally high anterior hinge ear for this species, is probably conspecific.

Distribution. Found in this study in the Late Pleistocene of Tasman Sea cores Sonne 36-61, 1-86/6GC3 and Coral Sea DSDP core 209.