THE NAUTILUS. 45 



Long. 16, diam. 4, aper. 3.3 mm. Whorls 9.5. 



Long. 14, diam. 3.2, aper. 3 mm. Whorls 8. 



Long. 15, diam. 4, aper. 3.2 mm. Whorls 9. 



Var. a. Somewhat larger and swollen. Whorls 9-11. 



Long. 20, diam. 5.2, aper. 4 mm. Whorls 11. 



Var. b. Chestnut-brown, spotted with white above sutures. 



Long. 18, diam. 5, aper. 3.6 mm. Whorls 10. 



Central Cuba ; Near Remedies ; var. " a " from El Palenque de 

 Jaguayabon and Cerro de Guajabana; var. " b " from near Jaguaya- 

 bon, all in the Province of Santa Clara. 



The, complete shell has 17 to 18 whorls with a total length of 20 

 to 22 mm. The rejected or broken-off portion of the spire is atten- 

 uate, delicately striate and with a smooth translucent and bulbous tip. 



UROCOPTIS (GONGTLOSTOMA) MAYAJIGUENSIS, n. sp. 



Shell rimate, cylindric, the upper half tapering to a narrow trun- 

 cation ; thin; reddish chestnut profusely marbled with white, some- 

 times in zigzag pattern. Surface densely, obliquely striate; slightly 

 angulate along the suture. Whorls 10 to 11, slightly convex, the 

 last shortly free in front, with a basal, cord-like keel. Aperture 

 slightly oblique, rounded ovate, brown inside; peristome pale brown, 

 expanded and reflexed. Axis encircled by two compressed lamellae, 

 the lower being larger in the later and slightly denticulate in the 

 upper whorls. 



Long. 23, diam. 5.2, apert. 4.2 mm. Whorls 12. 



Long. 19, diam. 4.8, apert. 3.6 mm. Whorls 10.5. 



Long. 20, diam. 5, apert. 4 mm. Whorls 11. 



Var. " a." Smaller, more swollen, whorls almost flat. 



Long. 18, diam. 5.2, apert. 4.2. Whorls 9. 



Central Cuba ; Las Llanadas, Sierra de Matahambre ; var. " a " 

 from Veredas de Aguada y del Alunado, in the district of Mayajigua, 

 province of Santa Clara. 



Differs from U. villarensis by its more slender and tapering spire, 

 brown color, suture, number of whorls, etc., and from U. remediensis 

 by its bi-lamellate internal axis, etc. 



The opaque white pattern is confined to the striae, the intervals 

 bein smooth. 



U. MAYAJIGUENSIS FULVA, 11. 



Shell smaller, cylindric, more solid; light brown with a golden 



