I ''>' oXY-TYl.A, SOUTH AMERICAN. 



tin- external markings in lilac- ; peristome narrowly edged with chest- 

 nut ; columella concave or nearly straight, white, thin ; parietal 

 callus rather thin, chestnut-colored, often in part wanting. 



Alt. 44, cliain. 2(>, longest axis of aperture 27 mill. 



Alt. ol, diam. 30, longest axis of aperture 31 mill. 



Eastern Brazil: Province of Para (Spix's type locality); Pernam- 

 bnco (Moricand); lialtid (Blanchet, vun Ihering, et /.). Southwest- 

 ern Bra/.il : (.'<>rn/iifiu, prov. Matto Grosso (H. II. Smith, Germnin). 

 hutch Guiana or Surhiuni (Cuniing coll.). Veiie/.uela : Barcelona 

 (C. Blume). 



Aclniiiini juiJchella Si'ix, Testae. Brasilia pi. 1), f. 2 (legend at 

 foot of plate) (1827) Bvlimus puhheUiis PFK., Monogr. ii, p. 144; 

 iii, p. 389 Ort/tttfi'-iis pulchellns BKCK, Index Moll., p. f>9. 

 SnrTTi.KwoKTii, Xotitiie Mai., i, p. (>2, pi. 4, f. G, 7. PFK., 



Monogr. iv, p. 588, vi, p. 199 ANCEY, Journ. of Conch. vii, p. 94. 



Jiiiliiinis ni/i/iif/is WAI.NKH, in Testae. Bras., p. 9. //<//./ nndata 

 var. FEU., Hist., pi. 117, f. 1. Orllilictis ziffzay BKCK, Index Moll., 

 p. ,"9 f?Jlii/i/n/nt ziyzog LAMAKCK, An. s. Vert, vi, 2d part, p. 

 118, no. 4 (1822); Edit. Deshayes viii, p. 223. 



The typical form (pi. 2s. li-s. 27, 28, 29) appears at Para and 

 Pernambuco ; the variety at Bahia (fig.*. 3(>, 37) and in Venezuela 

 (figs. 34, 3/)). In Surinam the shells are nearly typical in coloring, 

 according to Shuttleworth's figures. I have not seen specimens from 

 Matto Grosso, and do not know what form of the species occurs there. 

 1 ' iirs. 30,32, 33 are drawn from specimens lalielled "Ama/on River." 



It is a lieaiitifnl species, very easy to n-cogni/.e when typically de- 

 veloped (figs. 2H, 29) hy its crowded, narrow, dull purplish stripes, 

 intersected l>y three narrow girdles, on a buff-fawn ground. 



My coalescence of some of the stripes at the positions of the hands, 

 triangular Notches separated hy cream tinted intervals are sometimes 

 developed ( lig. L'7). 



The yiiuiig (figs. 30-33) has less crowded, wider and more angn- 

 lated stripes and continuous or Hihcontinuous girdles, assimilating to 

 the ancestral type of the whole group. There is generally an alni".-t 

 white hand helnw tin- peripheral girdle, and below the basal another, 

 the hitler hounded below by a circiim-columellar dark hand which 

 doi - not oeeur iii other species of the Zrhrti group, and is obsolete in 

 adult- of /mli-lirJIii. The hands are dark brown within the mouth, 

 the sire.-ik> a little lighter, and the while markings alluded to are 

 very distinct. 



