339 



Olivella solidula, n. sp. PI. xxv., figs. 7 and 8. 

 Shell small, solid, shining-white, smooth, obliquely 

 elongate-oval. Apex blunt, four whorls, sloping convex, 

 suture well channelled. Aperture oval, cqntr acting gradu- 

 ally to a linear gvitter posteriorly, widely open in front, and, 

 notched; outer lip simple, smooth; inner lip is a narrow, 

 thick glaze over the base to the suture, slightly spreading 

 over the columella. 



Dim. — Length, 6 mm.; of body-whorl, 4 mm.; width, 

 2-3 mm. 



Locality. — Type from 55 fathoms off Cape Borda, with 

 1 other ; Backstairs Passage, 22 fathoms, 3 specimens ; Gulf 

 St. Vincent, (?) depth, 3, none alive; Venus Bay beach, 1. 



Diagnosis. — It differs from 0. triticea, Duclos, in hav- 

 ing fewer whorls, being more solid, not so contracted anter- 

 iorly, and in not having a wide callus winding from the inner 

 lip over the front of the dorsum; from 0. exquisita, Angas, 

 which it closely resembles, in being smaller, narrower, and 

 pure-white. 



Ancilla beachportensis, n. sp. PL xxiv., tig. 9. 

 Shell solid, oval, of 4 whorls. Apex markedly papillate. 

 Spire completely covered with callus, almost obliterating the 

 sutures, which are indicated by shallow furrows, between 

 which over each whorl are some three low, broad spiral 

 ridges. Aperture triangnlarly-oval, narrow behind, widely 

 open in front, truncated, and widely notched. Outer lip 

 .simple, thin, with a callous thickening in its upj^er sixth, and 

 with a tooth near its anterior end. Inner lip a thick callus, 

 •extending beyond the aperture, and up over the sj^ire, where 

 it recedes in steps just above each sutural groove. Cokimella 

 nearly straight, truncate, with six oblique curved plaits in 

 front. The body-whorl has two approximate grooves, wind- 

 ing round its base from above the middle of the aperture, the 

 upper one to the labral tooth, the lower to just above the 

 notch; a third lies above a band of callus extending from 

 just above the columellar plaits to the left pillar of the notch ; 

 another groove bounds, at its lower edge, the spiral callus 

 which spreads down from the suture and thickens the back 

 of the outer lip. The body-whorl between these grooves has 

 sublenticular axial and spiral scratchings, and has a faint- 

 bluish-grey tint, whereas the callus is milk-white. 



Dim. — Length, 20*5 mm. ; of the aperture, 12 mm. ; 

 width, 95 mm. 



Locality. — Type from 110 fathoms off Beachport, with 

 9 others. 



