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 9y 2 



