The IIon.E. Chitty on the Stoastomidse. 77 



niul 2 stronger caiiiut. Spire, slightly elevated, with convex out- 

 lines. IVhorls, 3,V, well rounded, with deep suture. Aperture, very 

 slif^htly constricted at a distance iVoni the lahruin, and the strong 

 carinse' become obsolete ; thence, aperture well exj)anded ; rather 

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

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

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

 duced at the first strongest carina ; deeply and broadly pectinated 

 and scolloped between the strongest carinse, namely the 4th, 8th, 

 12th, IGth, 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- 

 whorl ; below the plane of the labrum. Uiiibi/icus, moderately 

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

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

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

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

 raised lamella : uj)per end, diagonally plaited from left above to 

 right below, and lower end the same, only from right above to left 

 below. 



Height 0-036, greatest breadth 00G4, least hreadth 0-048. 



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

 l:i\v, Esq., Stipendiary Justice, Manchester, Jamaica. 



§ 2. Last ichorl not stronyhj produced . Sculpture a few strong, 

 and many fine carince. 



WiLKiNSON.t;.\ Tavpani.\na, Chitty. See Stoastouia 7^('2)pa/(ia- 

 num. Ad. Cont. Conch, p. l-l9; Cat. Phan. p. 233. 

 Hub. Peace River, Manchester, 



WiLKiNSON.EA HoLLANDfANA, Chitt}'. See Stoasfomu IIol- 

 landianum. Ad. Cont. Conch, p. 14!) ; Cat. Phan. p. 234. 



Ilab. The back woods of Manchester, 



WlLKINSON^A Dysontana, Chitty. 



Hab. John Crow Hill, Portland. 



Form, subdiscoidal or very depressed conic. Colour, very pale 

 yellow. Sculpture, beautiful, — 6 very highly raised sharp spiral 

 carina?, with about 1 1 very fine highly microscopic carinae inter- 

 vening in the first space below the suture, 9 on the second space, 

 / on the third, fewer on the fourth and fifth, and very numerous 

 beyond the sixth strong carina round the umbilicus. On the upper 

 whorls, one strong carina in the middle, and one close above the 

 suture, with a proportionate number of very fine intervening. Spire, 

 slightly elevated, with very convex outlines. Apex, sharp. Whorls, 

 A\, scarcely rounded, with very light suture; last whorl scarcely 

 produced from the body-whorl. Aperture, very slightly constricted 

 at the fauces, not expanded, except very slightly below. lAibrum, 

 pectinated and very slightly scolloped by the six strong carinae, thin 

 and sharp. Labium, detached from the penult whorl ; on a plane 

 with the labrum, very slightly rounded above, much below to the 



