193 



slightly expanded, reflected, and depressed below. Labium, slightly 

 detached from the body-whorl, curved to the left above, and more 

 so to the right below. Umbilicus, shallow and narrow, partially 

 hidden by the gracefully curved but slightly projecting labral lamella. 

 Operculum, very slightly concave, with a few coarse granulations, 

 overlapping the labium on the labial side. 



Height 0-064, greatest breadth 0-084, least breadth 0-064. 



Named in compliment to J. S. Gaskoin, Esq., a lover of and writer 

 on conchology. 



Lindsleya Newcombiana, Chitty. 



Hdb. Clarendon Mountains (damaged, unique). 



Form, globose-conic. Colour, ? Sculpture, 18 strong 



rounded spiral carinae, with 2 finer intervening at the periphery ; on 

 the upper whorls 5. Striae of growth visible. Spire, well-elevated, 

 with rather concave outlines. Whorls, 5, moderately rounded, with 

 a well-impressed suture. Aperture, semicircular, scarcely detached 

 from body-whorl, not expanded or depressed, except slightly below. 

 Labrum, very little produced above, pectinated by all the strong 

 lines. Labium, well-detached from body-whorl, slightly curved 

 below, on a plane with labrum above, lower below. Umbilicus, deep 

 and narrow. Labral lamella, slightly and evenly produced. Oper- 

 culum, . 1 



Height 0-08, greatest breadth (H, least breadth 0081. 



Named in compliment to Dr. Newcomb, of Albany, N. Y. 



Lindsleya Riiseana, Chitty. 



Ilab. Near Mr. Channer's, Santa Cruz Park, St. Elizabeth 

 (unique). 



Form, globose-conic. Colour, pale yellow. Sculpture, 13 sharp 

 spiral carinae with 1 finer in each interspace ; on the upper whorls 

 3 strong with fine intervening. Spire, well-elevated, with straight 

 or very slightly concave outlines. Whorls, A\, very much rounded, 

 with a deep suture ; last whorl large. Aperture, sub-semielliptical, 

 slightly expanded, rather flattened above and expanded below. 

 Labrum, double, white, thickened, slightly scolloped and pectinated by 

 8 points, continuous with the labium, very slightly produced above. 

 Labium, well-detached from body-whorl, continuous with labrum, 

 much curved, more so below, very slightly lower than plane of the 

 labrum below. Umbilicus, moderately deep and broad. Labral 

 lamella, very slightly produced. Operculum, ? 



Height 0-049, greatest breadth 0-067, least breadth 005. 



Named in compliment to A. II. Riise, Esq., of the Island of St. 

 Thomas, a scientific conchologist. 



Lindsleya Poeyana, Chitty. 



Hab. John Crow Hill, Portland. 



Form, globose-conic. Colour, pale horn, almost white at the 



aperture. Sculpture, about 18 strong spiral carinae, with here and 



No. CCCXXXIX. — Proceedings of the Zoological Sociicty. 



