174 



rather flattened above and very slightly expanded. Labrum, spread- 

 ing not very prominently above, white and smooth, slightly reflected 

 and expanded about its centre, pectinated very slightly by four of the 

 stronger carinae. Labium, slightly detached from penult whorl ; 

 sinuous, thin, and shghtly reflected ; on the plane of the labrum 

 below, much below it above. Umbilicus, moderately deep and nar- 

 row, Tvell circumscribed by the labial lamella, which is sharply and 

 slightly produced. Operculum, ? 



Height 0-032, greatest breadth 0-054, least breadth 0-044. 



Named in compliment to Major Greenwood, whose coUection of 

 shells from New Zealand was sent by hira to the British Museum. 



WiLKiNSON^A Laidlawiana, Chitty. 



Hab. Pool's Rock, Hanover. 



Form, subdiscoidal. Colour, very pale green. Seulpfure, Ist, 

 2nd and 3rd spirai carinae, strong ; 4th strongest ; 5th, 6th and 7th 

 strong ; 8th strongest ; 9th, lOth and 1 ith strong ; 1 2th strongest ; 

 13th, I4th and 15th strong; 16th strongest; 17th, 18th and 19th 

 strong; 20th strongest; 2 Ist and 22nd stronger; 23rd, 24th, 25th 

 and 26th, round umbilicus, fine ; the strong lines are all obsolete 

 behind the aperture ; on the upper -vvhorls are 5 strong, 1 strongest, 

 and 2 stronger carinse. Spire, slightly elevated, with convex out- 

 lines. JVhorU, ^\, well rounded, with deep suture. Aperture, very 

 slightly constricted at a distance from the labrum, and the strong 

 carinse become obsolete ; thence, aperture well expanded ; rather 

 depressed above and expanded below ; more than a semicircle. La- 

 brum, very double, more so above than below ; joins the body-whorl 

 at the constriction by an angle of about 70° ; rather strongly pro- 

 duced at the first strongest carina ; deeply and broadly pectinated 

 and scoUoped between the strongest carinae, namely the 4th, 8th, 

 12th, 16th, and 20th, making five points ; slightly thickened and 

 reflected ; white. Labium, slightly reflected, rather thin, slightly 

 curved to the right above and below ; well detached from the body- 

 Tivhorl ; below the plane of the labrum. Umbilicus, moderately 

 deep, broad ; little affected by the labral lamella, though it is equally 

 and strongly produced all round. Operculum, shallow in the centre 

 and very flatly concave, with two sharp diagonal carinse across it, 

 from right above to left below : labral side with a broad border and 

 raised lamella : upper end, diagonally plaited from left above to 

 right below, and lovver end the šame, only from right above to left 

 below. 



Height 0-036, greatest breadth 0-064, least breadth 0-048. 



Named in kind remembrance of my bosom friend, Henry Laid- 

 law, Esq., Stipendiary Justice, Manchester, Jamaica. 



