298 DRYM^EUS, SOUTH AMERICAN. 



merus) maculatus PFR., in Malak. Blatt., ii, p. 160 (1855). 

 Orthalicus (Leptomerus') maculatus H. & A. ADAMS, Gen. Rec. 

 Moll., ii, p. 156. Bulimulus (Liostracus) maculatus VON MART., in 

 Albers Die Helic.,ed.2, p.213. FISCH. & CROSSE, Miss. Scient. Mex., 

 Mollusca, i, p. 505. Otostomus (Liostracus') maculatus H. ADAMS, 

 P. Z. S., 1866, p. 443. 0. maculatus MARTENS, Biologia Centr. 

 Arner., p. 220, pi. 14, f. 3. 



Considerably resembling D.doimani Binn.,this species is decidedly 

 narrower, with shorter aperture in proportion to the total length of 

 the shell. D. dominicus has not the well developed, free columellar 

 lip of semimaculatus, and the inner edge of the columella is much 

 more delicate, thin and concave. 



Fig. 9 is drawn from the type specimen, now in the U.S. National 

 Museum (no. 105,153) from which the description also is taken. 

 The Nicaragua specimens agree exactly with the Carthagena types. 

 The name is changed on account of the earlier Bulimus maculatus 

 of Bruguiere, Encycl. Meth., p. 365. 



D. SEMIFASCIATUS (Mousson). Vol. XII, PI. 5, figs. 6, 7. 



Shell subperforate, oblong-conic, striatulate, not decussated, 

 polished; white, brown spotted in series. Spire regular, acute; 

 apex minute, flesh colored ; suture slightly impressed, simple. 

 Whorls 7, slowly increasing, a little convex, the last two-fifths the 

 total altitude, not descending, oblong, rotund at base, with two 

 series of spots above, and three brown, yellow-edged bands below. 

 Aperture vertical, oval, showing the bands distinctly through ; 

 peristome unexpanded, acute, the terminations joined by a scarcely 

 visible lamina ; right margin gently incurved, columellar margin 

 vertical, nearly straight, shortly reflexed, vaulted and appressed 

 above. Alt. 27, diam. 12 mill. (Mouss.). 



Colombia (Wallis). 



Bulimus semifasciatus Mouss., Mai. Blatt., xvi, p. 175 (1869). 

 PFR., Novit. Conch., p. 129, pi. 129, f. 5, 6; Monogr., viii, 151. 



Nearest, Moussou writes, to B. maculatus, but with more numer- 

 ous, closer whorls, the spire a broader and wider cone, the surface 

 smoother, only finely striated, without trace of spiral lines, and a 

 color pattern of three entire, brown bands, yellow-edged on the 

 base, the lowest one wider. 



