ANTILLEAN OBELISCUS. 273 



larly tapering, rather acute; suture very slightly margined. 

 Whorls 15, a little convex, the last about one-seventh the 

 length, subangular below the middle. Aperture oblique, an- 

 gulate-oval; peristome simple, unexpanded, the columellar 

 margin somewhat straightened, a little reflexed, adnate. 

 Length 19, diam. 3, aperture 2.66x1.75 mm. (Pfr.). 



Porto Rico: San Juan, Luquillo, Quebradillas, Vega baja, 

 Caguana near Utuado (Blauner, Gundlach). 



Bulimus hasta PFR., Malak. BL, iii, 1856, p. 45 ; Monogr., 

 iv, p. 454. Stenogyra (Pseudobalea) dominicensis Pfr., 

 SHUTTLW., Diagn. n. Moll., no. 5, p. 140. Pseudobalea d., 

 CROSSE, Journ. de Conch., 1892, p. 31. 



This Porto Bican species differs from the Cuban 0. latus 

 by the slightly sinuous axis, as seen in opened shells (fig. 30), 

 and by the low spiral lamella which encircles the base of the 

 columella, as shown in fig. 29. It is scarcely visible in a 

 front view of the shell. Just what relation exists between 

 hasta and dominicensis I am unable to state; but until dif- 

 ferences are found to exist, the former may temporarily be 

 ranked as a variety. 



The uterine young shell (pi. 40, fig. 5) h)as a conoidal and 

 rather acute spire and a simple, nearly straight columella. 



30. 0. LATUS 'Gundlach/ n. sp. PL 32, figs. 24, 25, 26, 27. 



Shell sinistral, imperforate or nearly so, very slender, thin, 

 dull yellow, glossy, finely striatulate. Whorls 13 or 14, quite 

 convex, the last angular or subangular at the periphery. 

 Aperture oblique, ovate, outer lip thin and simple, columella 

 simply concave, with reflexed edge; no perceptible parietal 

 callus. Internal axis very slender and straight (fig. 26). 



Length 14.6, diam. 3 mm., whorls 14. 



Length 13.7, diam. 2.8 mm., whorls 13. 



Eastern Cuba: coffee plantation Buenavista, 6 leagues 

 from Bayamo; also various places in the jurisdictions of 

 Baracoa, Guantanamo (Gundlach) and Mayari (Wright). 



Pseudobalea lata GUNDL., Poey, Memorias, ii, p. 8. PFR., 

 Malak. BL, v, p. 43 (no description). P. dominicensis Pfr., 

 ARANGO, Fauna, p. 89. P. hasta in part, PFR., Monographia, 



