192 



very visible, oblique ; about 1 6 strong sharp spiral carinae, stronger 

 below, with one faint finer in each interspace ; on upper whorls 



5 strong, with finer intervening. Spire, slightly and rather con- 

 cavely elevated. Whorls, 5, moderately convex, with a deep suture ; 

 last whorl large and spreading behind the labrum, but, on the left, 

 assimilating the form of the subgenus Metcalfeia, and rather fall- 

 ing off below. Aperture, semicircular, except as modified by the 

 labium ; very slightly spreading. Labrum, thin, slightly reflected, 

 pectinated by about 10 points, 4 fine and close on the upper part, 



6 strong and wide apart round the periphery, strongest at the peri- 

 phery ; above, moderately produced from the body- whorl in a grace- 

 ful curve. Labium, well detached from the body- whorl, curved 

 throughout, below the plane of the labrum at lower end, thickened 

 and reflected towards the umbilicus. Umbilicus, deep and narrow. 

 Labral lamella, very slightly produced and immediately merged in 

 the umbilicus. Operculum, ? 



Height 0-072, greatest breadth 0-12, least breadth 0-084. 

 Named in compliment to Robert Shuttleworth, Esq., of Berne, 

 the well-known botanical and conchological collector and author. 



LlNDSLEYA BOISSIERIANA, Chitty. 



Hab. New Forest, Manchester. 



Form, globose-conic. Colour, pale horn. Sculpture, striae of 

 growth visible : 1 2 prominent not very strong spiral carinae, with 

 between the 1st and 2nd, 2 finer carinae; between 2nd and 3rd and 

 3rd and 4th, 1 fine ; between 4th and 12th, 2 fine ; beyond the 12th, 

 5 or 6 very, fine round the umbilicus : on the upper whorls 5 strong, 

 with intermediate fine. Spire, well elevated, with slightly convex 

 outlines. Whorls, 5, well rounded, with a deep suture. Aperture, 

 more than a semicircle, moderately expanded and slightly deflected 

 below. Labrum, but slightly separated or produced from the body- 

 whorl, well pectinated by the strong carinae. Labium, slightly de- 

 tached from body- whorl, on a plane with labrum above ; slightly 

 lower below, moderately curved to the right. Umbilicus, deep and 

 narrow. Labral lamella, rather produced at junction with labrum, 

 narrow below. Operculum, slightly concave, five horizontal lamellae 

 across it, strongest in the middle, fine granulations, a linguiform 

 sharp projection overlapping the labium. 



Height 0-064, greatest breadth 0*083, least breadth 0*067. 



Named in compliment to M. Edward Boissier, of Geneva, the 

 eminent naturalist. 



Lindsleya Gaskoiniana, Chitty. 



Hab. Near Ashley Hall, Trelawny. 



Form, globose-conic. Colour, white. Sculpture, 14 strong spiral 

 carinae, with 2 fine in each interspace ; on the upper whorls 5, with 

 fine ones intervening. Spire, well elevated, with straight outlines. 

 Whorls, A\, with a moderate suture. Aperture, more than a semi- 

 circle, subelliptical. Labrum, detached from the body-whorl, pro- 

 duced moderately above, very strongly pectinated by about 13 points, 



