241 Dominican Fossils— Maury 77 



than the aperture; suture distinct; whorls eight, the first two 

 smooth, nuclear; post-nuclear whorls slightly convex, ornament- 

 ed with weak, equidistant longitudinal plications, about twenty 

 on each of the last two whorls; the plications are strongest over 

 the convex portion of the volutions and fade out near the su- 

 tures; aperture narrowly elliptical, inner lip with a callus; colum- 

 ella with three sharp anterior and two weaker posterior plications; 

 outer lip thickened with a stout, marginated external band, 

 marked by an internal posterior Strombinoid notch and showing 

 traces of obsolescent crenulations within, not lirate. Length of 

 shell 20, greatest width 8.5 mm. 



Locality. — (Exp'd '16) Zone D, Rio Gurabo at Los Que- 

 mados. 



Genus PivOCHEL^A Gabb 



Plochelcea crassilabra Gabb 



Plate 14, Figure 3 



Plockelcsa crassilabra Gabb, Proc. Acad. Nat. Sci. Phila., vol. 24, p. 

 271, pi. 11, fig. 5, 1872. 



Plochelcea crassilabrum Gabb, Trans. Amer. Phil. Soc, vol. 15, p. 216, 

 1873. 



Shell Oliva-form, tapering anteriorly, spire low, suture ob- 

 solete, whorls about eight; aperture narrow; inner lip crossed by 

 about six slightly oblique, weak, linear plications; outer lip 

 much thickened at its center; columella recurved, sinus deep, 

 oblique. Length of shell 35, greatest width 17 mm. 



The above description is of a metatype from Santo Domin- 

 go. This species is the genotype of Plockelcsa. 



Genus Turricula Klein 



Turricula (Costellaria) Bzdlennewtoni ', n. sp. 



Plate 12, Figures 6, 6a 



Shell elongate, turreted, coronated; whorls eight, each or- 

 namented by nine sharp-edged, longitudinal riblets, terminating 

 at the shoulder in spinose tubercles, not extending to the suture, 



