190 



strong spiral carinse, not thickened as in L. Leana ; rather double 

 below. Labium, on a plane with labrum, more closely appressed to 

 body-whorl above. Umbilicus, narrow, much deeper and wider 

 than in L. Leana. Labral lamella, very slightly developed. Oper- 

 culum, ? 



Height 0-06, greatest breadth 0-074, least breadth 0*056. 



Named in compliment to John Denison, Esq., well known for his 

 extensive collection of shells. 



LlNDSLEYA POLYBLANKIANA, Chitty. 



Hab. ? Westmoreland. 



Form, globose-conic. Colour, light red-brown. Sculpture, an 

 uncountable number, say 50, extremely fine, raised, wavy, well-de- 

 fined spiral carinse ; about 20 on the upper whorls. Spire, well 

 elevated, with convex outlines. Apex, acute. Whorls, 4i, quite 

 round, with a very deep suture. Aperture, subelliptical, rather flat- 

 tened above and broad spreading, narrowed below and rather straight- 

 ened on the labial side, not in the least degree angular above or below; 

 labrum and labium continuous, much reflected. Labrum, excessively 

 double, especially above, where the outer stands clear out from the 

 inner edge. Labium, much reflected and closely attached to body- 

 whorl, very little straightened. Umbilicus, deep and narrow. Labral 

 lamella, very fine and narrow, lost immediately in the umbilicus. 

 Operculum, ? 



Height 0-069, greatest breadth 0-071, least breadth 0*056. 



Named in compliment to George Polyblank, Esq., a liberal ama- 

 teur collector. 



Lindsleya Albersiana, Chitty. 



Hab. John Crow Hill, Portland. 



Form, globose-conic. Colour, pale yellow. Sculpture, 25 fine 

 spiral carinse ; on the upper whorls 9 or 10. Spire, well elevated, 

 with rather convex outlines. Whorls, 5, well rounded, with a deep 

 suture. Aperture, subelliptical, labrum and labium being con- 

 tinuous ; white, smooth ; slightly expanded and deflected below, very 

 slightly detached from body-whorl, and almost vertical. Labrum, 

 double ; smooth, white, not affected by the spiral carinse ; con- 

 tinuous with the labium. Labium, moderately detached from body- 

 whorl. Umbilicus, moderately deep, not affected by the labral la- 

 mella, which is very little produced. Operculum, moderately con- 

 cave, smooth and shining. 



Height 0-049, greatest breadth 0*063, least breadth 0-044. 



Named in compliment to Dr. J. C. Albers, of Berlin. 



This shell is likeZ. Arthuriana, but differs materially in sculpture, 

 number of whorls, and measurement. 



Lindsleya Fischeriana, Chitty. 



Hab. ? St. Ann's. 



Form, globose-conic. Colour, pale yellow. Sculpture, 6 strong 

 spiral carinse, with 1 fine in the interspaces ; then 3 fine and 1 strong ; 



