110 THE NAUTILUS. 



Urocoptis (Gongyi.ostoma) cara n. sp. Plate VI, figs. 27-30. 



The shell is very slender, pillar-sluiped, of nearly equal diameter 

 thro\i<:hout, or tapering sliglitly towards the truncate summit, 

 whitish, copiously mottled and streaked with brown ; glossy, smooth 

 (or rartly showing very weak traces of widely S[)aced striaj), the 

 last whorl regularly thread-striate. The whorls are sliyhlly convex, 

 the last compressed towards its bjise, which is angular ahove the 

 ori"in of the neck, last half whorl free, tubular and descending, 

 rounded or having a weak keel below. The aperture is subcircular 

 white within, rather oblique ; peristome broadly expanding, reliexed, 

 white. The axis is encircled by two small, nearly equal lamellfe 

 the upper one more oblique, the lower thinner and shortly spinose. 

 In the penultimate whorl the axis becomes noticeably gyiate and the 

 upper lamella disappears. 



Length 16. o, dium. 2.1, aperture 2.1 mm.; 14^ whorls. 



Length 22.3, diam. 2.3, aperture 2.3 mm.; 20 whorls. 



Length 13, diam. 2 mm.; 12^ whorls. 



"San Jo?e rocks" about 2 miles northeast of Sancti Spiritus, 

 Province of Santa Clara, Cuba, H. A. Pilsbry, April, 1904. 



Several hundred specimens were taken IVom the vertical rocks 

 where they clung in abundance, though in the main lodged in 

 crevices and holes, like most of the slender Gongylostoma;, t!)ey vary 

 widely in size and number of whorls. No complete individuals were 

 found ; and it appears that about 12 or 15 whorls are lost in large 

 adults. 



U. cara differs from species of the TJ. wrifjldl group by having two 

 equal axial lamella). It is probably relatt^d to the nnfigured U. 

 impnrata (Arango) which is described as fusiform-cylindric, whitish, 

 with entire spire and 17 whorls. 



Urocoptis iiidalooi cap>rasensis, n. var. PI. VIII, fig. 16. 



Differs from U. hidalgo! by the sparse, weakly developed sufural 

 nodules, shorter, less closely costate neck, and by having an inter- 

 mediate collumellnr lamella between the two large ones in the 

 autepenultimate whorl. The shell is corneous with white streaks 

 and macuhc, smooth except on the last whorl. Length 13|, diam. 

 in the middle 3 mm.; 9^ wliorls remaining. Cerra de Cabras, Pinar 

 del Rio, collected by J. B. Henderson, Jr., 1909. 



