
CoTTON—SOME TERTIARY Fossit MoOLtuscs 657 
Specimens recorded from the Adelaidean as A, crustata Tate 1886, described from 
the ‘‘Oyster Beds of the River Murray Cliffs at. the North-west Bend’’ may be a 
smaller species related to A. negata. 
BaRBATIA EPITHECA sp. nov. 
Plate xx, figs. 14, 17. 
Shell irregularly subquadrangular, rather inflated, inequilateral; anterior 
end rounded; posterior side longer than the anterior, obliquely truncate and 
sharply rounded; ventral margin with a slight median sinuation; surface of 
valves sculptured with very fine and numerous radials crossed by almost equally 
developed concentrics; umbones moderately prominent, ligamental area narrow; 
height 12 mm., length 23 mm. 
Loc,: Abattoirs Bore, holotype, Adelaidean. 
Remarks: This species is related to the Recent B. pistachia Lamarck 1819 
from King Island, Bass Strait (type) which is found living in southern Australia. 
Barbatia limatella Tate 1886, another allied species, was deseribed from “‘ Sandy 
Clays at Blanche Point, Aldinga Bay, and argillaceous glauconitic sands, Adelaide 
Bore."’ Tate’s figured type is from ‘‘ Adelaide’’ or Adelaide Bore, Janjukian, and 
is different from the Adelaidean species in shape and colour. 
AGAR COMA 8p, NOY. 
Plate xx, figs, 25, 26, 
Shell subquadrangular, hinge line straight, umbones close, but slightly 
prominent; sculpture of concentric lamellae frilled radial, flattened ribs; ventral 
marvin gently medially sinuate; anterior margin rounded, posterior angled and 
obliquely truncate; an obtusely angled ridge runs from the umbo to the posterior 
ventral angle. Height 10 mm., length 23 mm. 
Loe.: Weymouth’s Bore, 345-350 feet, Adelaidean, 
Remarks: Related to Barbatia celleporacea Tate 1886 from Schnapper Point, 
Victoria (type), but differs in shape and sculpture, beine also like the Recent 
A, laminata Angas 1865 from Gulf St, Vineent, S.A, 
Other Recent species belonging to that genus are A. divaricata Sowerby (geno- 
type), from Annaa Island, A. reticulate Gmelin—A. domingensis Larmarck, 
West Indian, A. plicuta Dillwyn, Red Sea, A. dubia Baird, New Caledonia, 
A. digma Tredale, Lord Howe Island, A. iota Iredale, Low Island, Queensland, 
A, bolanica Hedley 1916, Port Jackson, A. kerma Iredale, Kermadec Island. 
