56 THE NAUTILUS. 



NEW JAMAICAN FORMS OF LUCIDELLA. 



BY HENRY A. PILSBUY. 



There are in Jamaica three strongly marked specific stocks of 

 Lucidella : L. aureola Fer., with the variety undulata; L. depressa 

 Gray (placed by Pfeiffer in Helicina), with the aperture like aureola, 

 but the shell smaller, more depressed, and weakly sculptured ; and L. 

 lineata C. B. Ad., of which L. nana Pf'r., is doubtless a variety or 

 synonym. These are quite small, with a strong, squarish tooth on 

 the basal lip, and strong, sharp spiral lirte. 



Another well marked species of the lineata type was collected by 

 Messrs. Wm. J. Fox and C. W. Johnson in a cave at Port Antonio, 

 on the northeastern coast of Jamaica. 



L. Foxi, n. sp. 



Shell with the depressed general form, size and color, and the acute 

 lira?, of L. lineata Ad.; the lirse bearing sparse, rather long and equi- 

 distant prostrate hairs, easily rubbed oft'. Whorls 4^, the last com- 

 pressed but not keeled at the periphery, descending in front, exca- 

 vated at the umbilical region, which is covered by a thin callus which 

 is sparsely and very minutely asperulate or roughened by minute 

 pointed granules. Aperture very oblique, subtriangular, the outer 

 and upper margins expanded, scalloped, with four to six projecting 

 points ; the basal margin narrowly reflexed ; basal lip bearing a large, 

 squarish, projecting tooth, as in L. lineata; upper margin with a 

 tubercular tooth well removed inward from the lip-edge ; outer lip 

 with a small tubercular tooth, distinctly developed only in fully mature 

 specimens. 



Alt. 2, diam. 3.8 mm., or smaller, diam. 3.5 mm. 



Cave at Port Antonio. 



L. trochiformls n. sp. 



Small and distinctly trochoidal, the base flattened, smooth except 

 for some radial wrinkles, and one or two spiral threads close to the 

 periphery ; upper surface convexly conoidal, radially undulated and 

 spirally 1 irate ; periphery acutely carinated and irregular or serrate; 

 whorls 41, but slightly convex, the last a little deflexed, somewhat 

 impressed in the axial region below. Aperture oblique, triangular, 

 the lip narrowly reflexed ; basal lip being a prominently projecting, 

 squarish tubercle, upper margin with a small submarginal tubercle, 



