BRACHYPODELLA, S.-G. BREVIPEDELLA. 47 



Haiti : in the mountains near the town of Corail, on the N. 

 side of the S.W. peninsula (Weinl.). 



Cyl. kraussiana WEINL., Malak. Bl., xxiii, 1876, p. 171, pi. 



2, f. 3, 4. PFR., Monogr., viii, p. 621. CROSSE, J. de C., 1891, 

 p. 145. 



Differs from the related C. iveinlandi by the greater num- 

 ber of whorls, the complete absence of denticulation of the 

 suture,, and the much stronger costulation (Weinl.}. I have 

 not seen specimens. 



3. B. IMITATRIX Pilsbry, n. sp. PI. 8, figs. 54, 55. 



Shell whitish-corneous, truncate, not one of over fifty speci- 

 mens before me retaining the spire complete. The surface is 

 glossy, closely and evenly rib-striate. The upper half or 

 more tapers. The last whorl is shortly free, obtusely angular 

 but not carinate below, flattened on its outer-lower face. The 

 aperture is obtusely angular above the middle of the outer 

 margin, the peristome somewhat straightened on both sides 

 of the angle. A young shell is attenuate above and the apical 

 whorls are delicately costulate vertically (fig. 55, x 25). 



Length 10, diam. 2.5 mm., whorls 8%. 



Length 11, diam. 2.6 mm., whorls 9y 2 - 



Length 9, diam. 2.3 mm., whorls 8. 



Haiti: Port-au-Prince, Sans-Souci, St. Mark (Marc), and 

 La Ferric re (Henderson & Simpson). 



The shell is indistinguishable from that of B. angulifera 

 of eastern Cuba. The figures here given represent the re- 

 markably even sculpture better than those already given of 

 angulifera, on pi. 42 of vol. xv, figs. 87, 88. The wide distri- 

 bution of both the Cuban and the Haitian forms precludes 

 the idea of colonization by commerce. The specific distinc- 

 tion is based upon differences in the teeth. In B. imitatrix 

 (pi. 9. fig. 2) the lateral teeth are decidedly smaller than in 

 angulifera (pi. 9, fig. 1), and the cusps are shorter, both abso- 

 lutely and relatively, not projecting beyond the posterior 

 margin of the basal plates, while in angulifera the cusps ex- 

 tend beyond the basal plates, and over the ectocones of the 

 succeeding teeth. In imitatrix they stand somewhat more 





