92 PRYM^EUS LEIOSTRACUS. 



broadly expanded above, impressed at its junction with the whorl ; 

 columella concave below, straight or a little convex above. 



Alt. 33, diam. 14-16, length of aperture 14^ mill. 



Alt. 29^, diam. 15, length of aperture 13 mill. 



Provinces of Bahia and Pernambuco (Spix, Acad. coll.); forests 

 of llheos (Blanchet); Forest of St. Gonzales and at Caxoeira, prov. 

 Bahia (Blanchet, for H. coxeirana); Bahia (Ihering, Paz). 



Bulimm vittatus SPIX, Testae. Bras. p. 7, pi. 7, f. 4 (1827). 



DESK, in Lam., An. s. Vert, viii, p. 243 PFR., Monogr. ii, 105; 



iii, 342; iv, 403; vi, 51 ; viii, 65 ; Conchyl. Cab. p. 259, pi. 70, f. 

 7-11. REEVE, Conch. Icon. pi. 44, f. 279. HIDALGO, Journ. de 

 Conchyl. 1870, p. 1 .Bulimulw vittatus BECK, Index Moll., p. 65. 

 CLESSIN, Mai. Bl. 1888, p. 166, Not Otostomus vittatus SEMPER, 

 Reisen in Arch. Philippinen, Landmoll. iii, p. 156, pi. 15, f. 15 

 (anatomy ) specimens from Mexico and Caracas. Helix coxeirana 

 MORICAND, Mem. Soc. Phys. d'Hist. Nat. Geneve, vii, p. 433, pi. 

 2, f. 7-11 (1836). Bulimus coxeiranus DESK, in Lam., p. 240. 

 H. caxoeirana MORIC., Mem. Geneve ix, p. 59. Bulimus candidus 

 GRAY, in Maria Emma Gray's Figs. Moll. Anim., iii, pi. 302, f. 4 

 (copy from Moricand), and iv, p. 115 (1850) Bulimus omphalodes 

 MKE., Zeitschr. f. Mai. 1846, p. 144. PFR., Monogr. iii, p. 105. 



Apparently differs from D. obliquus in having the aperture longer 

 and the apical sculpture different. The number of bands varies from 

 4 to 0, but the uppermost, a line al the suture, is generally absent. 

 It varies considerably in degree of elongation, some shells before me 

 having the body-whorl shorter and more convex than any of those 

 illustrated on my plate. Menke's B. omphalodes was founded on 

 short examples, with the aperture relatively larger than in the types, 

 measuring 15 mill, long with a shell length of 31 mill. 



The coloring of Spix's type is that shown in fig. 1, streaked, with 

 a basal band. Moricand based his coxeirana upon banded shells, and 

 gave names to the several color-forms. But slight systematic im- 

 portance attaches to these band-varieties, which are as follows : 

 Viitato-ezonata, streaked like fig. 1, but bandless ; unicolor, citron 

 yellow throughout (fig. 4) ; trizona, three dark bands on a light 

 ground (fig. 2) ; dizona, two bands (fig. 5) ; nigrescens, upper two 

 bands united (fig. 3) ; purpurascens, a single subperipheral vinous 

 band. 



Hidalgo reports vittatus from Rio Janeiro, on the authority of Sr. 



