MACROCERAMUS, CUBA. 143 



sculptured whorl. Spire with more or less convex lateral 

 outlines, the apex obtuse. Whorls 9y 2 to 11 in entire, 7 to 9 

 in truncate shells, the first 2y 3 whorls smooth, pale; last 

 whorl rounded, sometimes obtusely carinate. Aperture small, 

 but slightly oblique, nearly round, either pale or with a 

 dark band inside. Peristome acute, unexpanded. 



Length 12, diam. 4.3, length apert. 3.3 mm. (truncate). 



Length 12, diam. 4, length apert. 2.8 mm. (entire). 



Length 9.5, diam. 3.3, length apert. 2.5 mm. (entire). 



Length 14, diam. 5, length apert. 4 mm. (type). 



Eastern Cuba: Santiago, on plants (Gundlach). 



M. jeannereti Gundl. in PFR., Malak. BL, v, 1858, p. 182 ; 

 Novit, Conch., p. 405, pi. 93, f . 22, 23 ; Monogr., iv, p. 688. 

 ARANGO, Fauna, p. 82. Megalomastoma pupinum Gundl. 

 mss., POEY, Memorias, ii, pp. 10, 89. Macroceramus pupinus 

 Gundl. mss., ARANGO, in Poey's Repertorium, ii, p. 82, and 

 in many collections. 



This species is closely related to M. pupoides and M. 

 festus, but both of these are nearly smooth, while jeannereti 

 is strongly ribbed. M. costulatus differs by its continuous 

 peristome. The suture in M. jeannereti is slightly crenu- 

 lated by the ribs. 



26. M. CRENATUS ' Gundl/ Pfr. PI. 20, figs. 21-24. 



Shell subperforate, oblong-ovate, solid, striatulate and ob- 

 soletely pitted; blue- whitish, irregularly painted with cor- 

 neous spots, especially towards the apex. Spire ovate-conic, 

 shortly truncate ; suture coarsely and unevenly crenate. 

 Whorls remaining 7, a little convex, the last encircled by one 

 or two elevated ridges, and banded with chestnut below 

 the middle, somewhat constricted in front, somewhat de- 

 scending. Aperture a little oblique, irregularly, subtrans- 

 versely oval; peristome simple, unexpanded, obtuse, contin- 

 uous. Length 8.5, diam. 4 mm., oblique length of aperture 

 2.5 mm. (Pfr.). 



Eastern Cuba: Santiago de Cuba (Gundlach), and Jura- 

 gua, a short distance eastward (Jeanneret). 



