MICROCERAMUS. 167 



Length 7.2, diam. 3 mm. 



Length 8, diam. 3.5 mm. (Pfr.). 



Central Cuba: Magua and Sitio Quemado, in Trinidad 

 district, Santa Clara (Gundlach) ; also Guisa, in eastern Cuba. 



Macroceramus angulosus Gundl. mss., PFR., Malak. BL, iv, 

 1857, p. 107 ; v, p. 44, no. 21 ; Monogr., iv, p. 690. ARANGO, 

 Fauna, p. 84. 



In the sculpture of white riblets on a brownish ground 

 this species resembles M. petitianus var. perconicus. It is 

 also not unlike Pineria beathiana. 



14. M. MINOR (< Arango' Pfr.). PI. 27, fig. 45. 



Shell imperforate, fusiform-turrite, rather thin, corneous, 

 sculptured with close, oblique, whitish riblets. Spire swollen- 

 turrite, the apex acute. Whorls 9, a little convex, the last 

 tapering, rounded. Aperture diagonal, subcircular, the peri- 

 stome whitish, narrowly expanded, the margins approaching, 

 columellar margin adnate. Length 5.66, diam. 2 mm.; diam. 

 of aperture hardly 1.5 mm. (Pfr.) 



Eastern Cuba: Tanamo Bay, on the north shore of dist. 

 Sagua de Tanamo, Prov. Santiago, under stones (Arango). 



Macroceramus minor Arango mss., PFR., Malak. BL, xiii, 

 1866, p. 60 ; Novit. Conch., p. 408, pi. 93, f . 36-38 ; Monogr., 

 vi, p. 351. ARANGO, Fauna, p. 85. 



I have not seen this species, but judging by the very oblique 

 aperture and adnate columellar lip, it is probably a Micro- 

 ceramus, though found far to the east of its kindred. The 

 apical sculpture is unknown. 



15. M. SIMPLEX (Pfeiffer). PI. 27, fig. 46. 



Shell perforate, ovate-conic, rather solid, closely rib-striate, 

 nearly uniform gray. Spire swollen-conic, the vertex rather 

 acute; suture simple, impressed. Whorls 8, a little convex, 

 the last rounded, subangular above the aperture. Aperture 

 slightly oblique, subcircular; peristome simple, a trifle ex- 

 panded throughout. Length 7.33, diam. 3.5 mm., apert. 2 

 mm. high. (Pfr.) 



