126 UROCOPTIS OF JAMAICA. 



oblique stria;. The shell is thin, serni-transpareiit, of a very 

 pale whitish corneous-brown, the last whorl having a narroAV, 

 reddish-brown band at the base, its edges shading into the 

 ground color of the shell. This zone, cut by the suture, gen- 

 erally ascends the preceding whorls, but never reaches the 

 apex. Length 14, diaui. 5 mm. 



Cyl. abbreviata DESH., in Fer. Hist., ii, p. 226, pi. 164, f. 

 13-15. PFR., Monogr., iii, p. 565. 



The locality of this form, is unknown. .In a tray of three 

 specimens before me, one (pi. 33, figs. 93, 94) has the basal 

 and suprasutural band as described by Deshayes; another 

 has a dark band beneath the suture (fig. 94), while the third 

 has no bands. It is doubtless a local race of U. brevis. Figs. 

 90-92 of pi. 33 are copied from Deshayes, from whose account 

 the above description was taken. 



7. U. OVATA (Deshayes). PL 33, figs. 87-89. 



"Shell somewhat acorn-shaped, oval, very obtuse at the 

 summit, very broadly truncate, tapering at the ends. The 

 spire is composed of 7 very flat whorls, united by a perfectly 

 superficial and sometimes very obscurely margined suture. 

 The last whorl is extremely short, its diameter is less than 

 that of the preceding whorl. It is provided in front w r ith a 

 small, obtuse keel, a little compressed on each side. The aper- 

 ture is entirely detached, is irregularly circular and projects 

 obliquely forward. The thin and sharp peristoine is strongly 

 reflexed. The whole surface is covered with extremely fine 

 striae, very elegant by their regularity; they are obtuse and 

 distinctly curved. They disappear on the ventral surface of 

 the last whorl, to reappear on the back, but coarser and more 

 spaced. The whole thin and semi-transparent shell is of a 

 very pale, uniform rose color. Length 20, diam. 8 mm." 

 (Desk.). Jamaica. 



C. ovata DESH., in Fer., Histoire, ii, p. 227, pi. 164, f. 7-9. 

 PFR., Monogr., iii, p. 565. 



"Very closely related to C. brevis of Pfeiffer. It is dis- 

 tinct by several characters, and may be recognized at sight by 

 the more swollen shape." 



