202 DRYM^EUS, SOUTH AMERICAN. 



Helix fusoides ORB., Mag. de Zool., 1835, p. 19. Bulimus? 

 j'uxoides ORB., Voy. Amer. Merid., p. 315, pi. 40, f. 12, 13. REEVE,. 

 Conch. Icon., pi. 18, f. 106. PFR., Conchyl. Cab., p. 102, pi. 33, f. 

 7, 8 ; Monogr., ii, 51 ; iii, 329 ; iv, 385 : vi, 34. Bulimulas fusoides 

 Alb., (Drymceus) PATEL, Cat., p. 105. ANCEY, Journ. of Conch., 

 vii, p. 92. 



This species, while allied to D. petasites, D. ortkostoma and other 

 Ecuador forms, is apparently distinct from any of them, and con- 

 fined to Bolivia. Ancey writes : " the specimens from Santa Cruz 

 de la Sierra are yellowish-ochraceous, and are provided with more 

 or less distinct and numerous obscure stripes, which in some indi- 

 viduals are absent or very faint. The color of the aperture is 

 characteristic. Some specimens are more slender than others." 



D. LUSORIUS (Pfeiffer). Un figured. 



Shell slightly perforated, subfusiform-oblong, thin, smooth ; fleshy- 

 whitish, ornamented with sparse undulating streaks of chestnut. 

 Spire convex-conic, rather acute ; suture indistinctly margined. 

 Whorls 5, a little convex, the last a little shorter than the spire, 

 tapering at base. Aperture a little oblique, oval, with streaks of 

 deeper color inside ; peristorne thin, right margin curved above, 

 then broadly expanded ; columella somewhat compressed, with a 

 twisted fold, receding, columellar margin a little reflexed. Alt. 25, 

 diam. 10 mill.; aperture 12 mill, long, 7 wide. (Pfr.). 



Banks of the Amazon River, Brazil (Curning coll.). 



Bulimn* litsorius PFR., P. Z. S., 1854, p. 291 ; Monogr., iv, p. 

 386; vi, p. 34. Bulimus (Drymceus) lusoriusPFR., Malak. Blatter,. 

 1855, p. 151. 



Allied to B. fusoides Orb. and B. pealianus Lea. (Pfr.). 



D. LOPHOICUS (d'Orbigny). PI. 36, figs. 39, 40. 



Shell elongated, very distinctly umbilicated, thin, rugose on the 

 later whorls, the earlier nearly smooth ; gray- white or rose, varied 

 with irregular longitudinal lines of brown or whitish, the apex 

 sometimes deeply rose colored ; spire lengthened, nearly conic, with, 

 obtuse apex, composed of 8 wide swollen whorls separated by a 

 smooth and quite deep suture. Aperture yellowish, especially at 

 the margins, oval or oblong, not oblique, the peristorne quite thick, 

 little reflexed ; columella thick, swollen, a little twisted. Alt. 

 diam. 12 mill. (Orb.). 



