232 DRYIVLEUS, SOUTH AMERICAN. 



The color-forms are : 1, dots and evanescent streaks of brown ; 2, 

 a broad basal brown band whence arise ascending streaks ; 3, 5 spiral 

 brown bands. 



The black apex, or embryonic whorls are only present in a few 

 closely allied species, especially B. protractus Pfr. and B. marice 

 Moric. (= B. strigatus Pfr., Mon. iv, var. d), which are distinguish- 

 able by other features. 



D. RECTILINEARIS (Pfeiffer.). PI. 44, figs. 9, 10 and young shell, 11. 



Shell profoundly rimate or subperforate, oblong-pyramidal, thin, 

 very lightly striatulate, diaphanous ; whitish with one to three red- 

 dish bands and two wide blackish basal bands, articulated with 

 white. Spire long-conic, subrectilinear, with the apex orange and 

 rather acute. Whorls 7 to 7, rather flattened, the last nearly two- 

 fifths the total length, rotund at base. Columella slightly receding. 

 Aperture oblique, oval-elliptical ; peristome thin, the right margin 

 narrowly expanded ; columella very much dilated above, somewhat 

 vaulted. Alt. 221-24, diam. 9J-10? mill. ; aperture 10 mill, long, 

 5J wide. (P/r.). 



Peru: Moyobamba (Yates), Tarapoto (Spruce). 



Bulimus reclilinearis PFR., P. Z. S., 1855, p. 96, pi. 31, f. 7 (not 

 adult) ; Novit. Conch., iii, p. 414, pi. 94, f. 19, 20; Monogr., iv, p. 

 405 ; vi, 51 ; viii, p. 65. Otostomus rectilinearis H. AD., P. Z. S., 

 1870, p. 375. 



D. FIDVENSIS (Moricand). PI. 41, fig. 21. 



Shell lengtheued-oblong, subfusiform, umbilicate, with acute spire, 

 very delicately and irregularly striate ; pale buff, irregularly macu- 

 late and figured with chestnut. Whorls 7J, flat, regularly increas- 

 ing. Aperture oblong-oval, oblique, subangular at base; lip some- 

 what expanded, slightly reflexed, white ; pale violaceous inside. 

 Alt. 30, diam. 11 mill. (Moric.'). 



Bahia, Brazil (Moricand). 



Bulimus fidcensis MORIC., Kev. et Mag. de Zool., 1858, p. 451, pi. 

 14, f. 1. Bulimus fidaensis PFR., Monogr., vi, p. 79. 



This Bulimus, which I think is very rare, is long, solid, of a dirty 

 yellowish-white, smooth and polished, with some striae of growth and 

 other finer, irregular striae visible only under a lens; it is speckled 

 with brownish, irregularly scattered spots and dots. The violet 

 color of the inside reappears outwardly, surrounding the umbilicus. 



