MACROCERAMUS, HAITI. 127 



Length 15-16.5, diam. 6.3 mm. 



Santo Domingo: Arroyo hondo (A. Salle) ; Buliodinero 

 {Lafont, teste Ferussac). 



Turbo formosus WOOD, Index Testae., suppl., p. 19, pi. 6, 

 f. 24 (1828); Edit. Hanley, p. 223 (1856). Bulimus for- 

 mosus Wood, PFR., Symbolae ad Hist. Hel., iii, 84; C. Cab., 

 p. 127, pi. 42, f. 4-6; Monogr., ii, 80; iii, 362. DESH. in 

 Fer. Hist., p. 101, pi. 150, f. 21-23. REEVE, C. Icon., Bui., 

 pi. 64, f. 448. Macroceramus f., PETIT, J. de C., i, p. 379. 

 PFR., Monogr., iv, 687; vi, 344. CROSSE, J. de C., 1891, p. 

 130. Helix pupiformis FER., Prodr., no. 492, p. 71, accord- 

 ing to tradition. Bulimus cylindricus GRAY, Annals of 

 Philos., ix, 1825, p. 414. 



The wide spire, rapidly tapering above and contracted near 

 the black summit, are characteristic. Wood's type had chain- 

 like markings, like fig. 29, but they are often undeveloped, as 

 in fig. 31. 



Probably Gray's M. cylindricus (1825) was based upon 

 this species, though subsequently Gray himself confused it 

 with M. signatus, and Reeve and Pfeiffer identified it as 

 M. lineatus. The translation of Gray's original descrip- 

 tion follows : l i Shell conic-cylindric, perforate, whitish, 

 densely concentrically striate, ornamented with 6 inter- 

 rupted brown bands; whorls 9 or 10, a little convex; 

 aperture nearly round, peristome thin; length six- tenths, 

 diam. three-tenths of an inch." As so expert a conchologist 

 as Pfeiffer failed to recognize this as formosus, it would, per- 

 haps, be inadvisable to insist upon the identification and dis- 

 place the name given by Wood, which was unmistakably 

 defined by a good figure. Ferussac 's Helix pupiformis was 

 not described. 



9. M. TENUIPLICATUS (Pfeiffer) . PL 22, figs. 33, 34, 35. 



" Shell subrimate, oblong- turrite, rather solid, longitudin- 

 ally subarcuately, delicately plicate; opaque, chalky, orna- 

 mented with chestnut streaks, interrupted or in three ranges. 

 Spire long, with somewhat convex outlines, the apex acute, 

 black; suture nearly simple. Whorls 12, a little convex, the 



