THE NAUTILUS. 



VOL. XXVI. FEBRUARY, 1913. No. 10 



TWO NEW CUBAN UROCOPTIDJE. 



BY H. A. P1LSBRY AND J. B. HENDERSON, JR. 



UROCOPTIS (GONGYLOSTOMA) LONGA, n. sp. PI. VIII, figs. 9, 10* 



The shell is cylindric or pillar-shaped, a trifle widest in the 

 middle, tapering slightly to the rather wide truncation; whitish or 

 pale brown, indistinctly mottled or rather distinctly streaked with 

 brown ; glossy, smooth, the last whorl thread-striate, contracted and 

 angular above the origin of the neck, which is free and descends 

 shortly. The aperture is somewhat oblique, subcircular. The 

 peristome is rather broadly expanded, reflexed, white, usually brown- 

 tinted below. Axis slender, encircled with a small, sub-basal 

 lamella which is minutely spinose in the upper whorls. 



Length 14.2, diam. 2.1, aperture 2 mm.; 13^ whorls. 



Length 15.5, diam. 2.1, mm.; 13^ whorls. 



A small rocky hill at Zaza del Medio, at the junction* of the 

 Sancti Spiritus branch with the Cuban Central R. R., Province of 

 Santa Clara, collected by H. A. Pilsbry, April 15, 1904. 



This species belongs to the group of U- wrighti as defined in tin- 

 Manual of Conchology, vol. XV, p. 263. It differs from the species 

 there described by its smooth surface. It is also different from the 

 several new forms recently found by Professor de la Torre, all of 

 which have been compared. 



