130 MACROCERAMUS, HAITI. 



pi. 42, f. 1-3; Monogr., iii, p. 364 (1853) ; P. Z. S., 1852, p. 

 139 (June 27, 1854). Macroceramus c. PFR., Monogr., iv, 

 688. CROSSE, J. de C., 1891, p. 132 (exclusive of loc. Rio 

 Amina) . 



Pfeiffer's description is given above (the italics being my 

 own), and his figures of the type are copied. I have not seen 

 the species, which must be closely related to M. ludovici and 

 the smaller M. klatteanus. 



11. M. LUDOVICI (Pfeiffer). PL 22, figs. 36-40. 



Shell shortly rimate, turrite, solid; outlines of the spire 

 more or less convex. White, with a narrow dark-brown band 

 below the periphery of the last whorl, and having a series of 

 brown spots at the periphery and above the sutures; some- 

 times with some oblique chestnut streaks and scattered spots 

 or dots; and there is a brown patch around the umbilicus. 

 Some, or all, of these markings may be absent or reduced. 

 Surface smoothish, sculptured with growth-lines only, except 

 the upper third or half, where there are fine, thread-like 

 striae. The apical whorls are pale corneous, sometimes broken 

 off. Whorls 10 to 12, convex, separated by a smooth, im- 

 pressed suture; the last whorl is more or less compressed 

 laterally, and has no basal keel. Aperture about one-fourth 

 the length of the shell, vertical, brown inside, oval, the outer 

 lip slightly and narrowly expanded, columellar lip spreading. 



Length 17, diam. 4.5, apert. 4 mm. long. 



Length 14, diam. 4.3, apert. 3.6 mm. long. 



Santo Domingo: Nicayagua (Salle). 



Bulimus ludovici PFR., Monogr., iii, p. 364 (1853) ; Conchyl. 

 Cab., p. 130, pi. 42, f. 20-22; P. Z. S., 1852, p. 139 (1854).- 

 Macroceramus 1. PFR., Monogr., iv, p. 688. CROSSE, J. de C., 

 1891, p. 132. 



The small size of the brown aperture, the smoothness of the 

 lower whorls, and the color-pattern, distinguish this species 

 from M. tenuiplicatus. 



There is a variety, pi. 22, figs. 41, 42, 43, in which the shell 

 is smaller, more attenuate and acute above, with the surface 

 delicately thread-striate throughout. There are about 9% 



