The Hon. E. Chitty on the Stoastornidae. 221 



derately detached from the body-whorl and thickened and reflected, 

 shghtly curved to the right below, very much below the plane of 

 the labrum. Umbilicus, broad and moderately deep. Labral la- 

 mella, very sharp and narrowly produced. Operculum, deeply con- 

 cave, apparently smooth, or with blunt vertical lamellae, margined all 

 round, labial side much curved, rather pointed at upper and lower 

 extremity. 



Height 0-033, greatest breadth 0062, least breadth 0052. 



Named in compliment to my friend Dr. Baird, of the British 

 Museum. 



Var. minor. A much smaller variety, coming from the same 

 habitat. 



Blandia MacGillivrayana, Chitty. 



Hab. (?) Pedro district, St. Ann's. 



Form, subdiscoidal. Colour, pale yellow. Sculpture, 20 faint, 

 equidistant, spiral carinse ; on the upper whorls, 6. Spire, very little 

 elevated, with convex outlines. Whorls, 3i, moderately rounded, 

 with a moderate suture. Aperture, large, very broadly expanding, 

 slightly depressed above. Labrum, double throughout, but more so 

 above, slightly reflected, white, smooth, much produced above, leaving 

 the body-whorl at an angle of about .50°. Labium, almost appressed 

 to the body-whorl in its centre, slightly curved above, more below to 

 the right, below the plane of the labrum. Umbilicus, shallow and 

 spreading. Labral lamella, very little produced. Operculum, not 

 concave, but moderately sunk or depressed (flat or smooth) in its 

 interior surface, more so at the lower labial side ; edge on labral side 

 much and broadly folded over convexly. 



Height 0-034, greatest breadth 0'055, least breadth 0*04.5. 



Named in compliment to John MacGillivray, Esq., the well-known 

 and able naturalist and collector. 



Blandia Troscheliana, Chitty. 



Hab. Clarendon Mountains. 



Form, subdiscoidal. Colour, ? (only two bad specimens). 



Sculpture, 23 irregular, inequidistant, coarsely rounded, spiral carinse 

 obsolete at the periphery, 4 more prominent than the rest ; on the 

 upper whorls, 5. Spire, much depressed, with convex outlines. 

 Whorls, 3i well rounded, with a well-impressed suture. Aperture, 

 very slightly expanded, rather flattened above and depressed below, 

 more than a semicircle. Labrum, moderately produced above, 

 double, white, thickened and reflected, very slightly pectinated by 

 the four stronger carinse, or rather squared as in Wilkinsoncea Mous- 

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

 to the right above and below, on a plane with the labrum below, 

 lower above. Umbilicus, broad and deep. Labral lamella, very 

 little produced. Operculum, smooth and concave, deep on the labial 

 side. 



Height 0-03, greatest breadth 0-059, least breadth 0-045. 



