410 RINGICULA. 



last whorl half the length of the shell, rounded at base; spire elon- 

 gate ; aperture narrow ; margined joined by a thick callus ; col- 

 umellar margin arcuate, three-folded, the folds strong, upper one 

 oblique, median horizontal, lower fold twisted ; lip nearly straight, 

 thick, prominent in the middle, subdentate, thickened outside. 

 Alt. 2, diam. 1 mill. (Mori.'). 



Bay of Pouen, New Caledonia, 12 meters depth. 



E. caledonica MORL., J. de C M 1880, p. 154, pi. 5, f. 1. 



The surface is brilliant and covered with spiral striae, while E. 

 prismatica is not striated over the greater part of the surface. The 

 shell is more brilliant than that of E. goujoni, and the strise are less 

 crowded, and the lip has but one fold. 



R. NOUMEENSIS Morlet. PI. 43, figs. 20, 21. 



Shell small, ovate-elongate, ornamented with remote striae ; whorls 

 5, convex, separated by a linear suture ; last whorl two-thirds the 

 length of the shell, rounded at base ; aperture wide, the margins 

 joined by a somewhat thickened, little expanded callus; columellar 

 margin arcuate, three-folded, the upper fold thick, short, intermedi- 

 ate fold horizontal, lower fold ascending ; lip regularly arcuate, thin 

 above, thickened in the middle, prominent, subdentate, outside a 

 little reflexed, the basal callus thick, reflexed outside. Alt. 3], 

 diam. 2 mill. (Mori,). 



Noumea, New Caledonia; Gouenen and Pouen, N. Caledonia 

 (small var.). 



E. noumeensis MORL., J. de C. 1880, p. 155, pi. 5, f. 3. 



R. AUSTRALIS Hinds. PI. 47, figs. 80, 81. 



Shell ovate, acuminate, smooth, polished; whorls rounded, the 

 penultimate sensibly smaller ; spire elongated, encircled with a 

 somewhat whitish band below the suture. Alt. 1-1 lines. (Hinds.). 



Port Lincoln (Mus. Metcalfe) ; Spencer's Gulf (Angas) ; New 

 Caledonia (Lambert) ; Darnley Island, Torres Strait (Brazier). 



E. australis HINDS, P. Z. S. 1844, p. 97. ANGAS, P. Z. S. 1865, 

 p. 156. CROSSE, Journ. de Conch. 1<S65, p. 44, pi. 2, f. 5. MORL., 

 J. de C. 1878, p. 125, pi. 5, f. 10. E. angasi Braz., Proc. Linn. Soc. 

 N. S. Wales ii, p. 78. 



The only specimen before me has not attained its full adult age. 

 In its characters it is rather intermediate; the spire is not so prom- 



