conical with 1-2 small aciculae in subsequent segments, bearing many long simple and few serrate chaetae.
pugaporcinus in the form of the prostomium and peristomium, the general shape of region A, the presence of aliform notopodia
in segment B1, the development of an accessory feeding organ, and the relative size and shape of segments in region B and C (Irvine et al., 1999).
The first pair of branchiae emerges anterior to, rather than dorsal to, the notopodia
hirschi has spermathecae dorsally on the notopodia
of segments 10-12, and ventral oviduct openings on segment 11; in capricornia the spermathecae and oviducts are in the same position, except that spermathecae are on segments 11 and 12 only.
However, according to Blake (2000) all the species bearing stomach papillae and lacking modified spines on thoracic notopodia
should be assigned to Orbinia and the type material of the species referred to Scoloplos should be carefully examined in order to evaluate the transfer of these species to Orbinia.