;i I I>KYM i is I.KK>M I;A< i -. 



5. "With three dark hands upon a whitish or yellowish ground 

 //. >;//////). 



0. With lour dark hands, the uppermost from the MM lire on cover- 

 ing half of the whorls. 



7. With lour or live hands, the lowest around the ninhilieu.- li^ht 

 hrnwii or dark, the rest always dark; tin- uppermost and middle ones 

 generally narrow and light brown, the second always lilac or n>-e, 

 sometimes decidedly wider than the others; and frequently then- is 

 a line, dark mitural line. Measurements of .-e\eral specimens are: 



Alt. 30, diam. 13 ; aperture, length 12, width 8 mill. 



Alt. 27, diam. 14; aperture, length 1H, width 7.\ mill. 



Alt. 2(5, diam. 13 ; aperture, length 12, width 8\- mill. 



Alt. 24, diam. 11^; aperture, length 1(1, width 7 mill. 



Alt. 22. 1 ,-, diam. 12; aperture, length in, width C.-L mill. 



This specie* is undoubtedly distinct from l>. i-it'otas Spix. It is 

 doubtful, in my opinion, whether 13. cozeiraxns Moric., placet! by 

 1'feiffer as a synonym of J3. vittaiiis, will not have to be removed 

 thence and united with the present species. (DoJu-it.) 



D. OLOi'Ei (Pfeiffer). 



Shell perforate, ovate-turreted, rather solid, striated and sometimes 

 Hibmalleate ; white, irregularly marked with streaks, spots and dots 

 of corneous-brown. Spire long-conic, rather acute. "Whorls 7, mod- 

 erately convex, the last scarcely equal to three-sevenths of the total 

 length, subangular, having a corneous hand around the impervious 

 perforation. Coluniella shortly receding. Aperture olli<|iie, sinuate- 

 oval, brownish within ; peristome narrowly expanded, the columellar 

 margin dilated above, rellexed, then descending to an obtuse ba-:il 

 angle. Alt. 22, diam. in mill.; aperture in.', mill, long, <'> wide. ( 7VV. ) 



lirir.il (Clone, in Cmning coll.). 



llnHiniis clouti 1'ri:.. P. /. S., IH.'H;. p. :;:in : M,m,.gr. iv, p. 408. 



Very similar in form to B.obfitjuns live, i /'/'-. 



1). ONAOBB ( r..-.-k). 1M. 14, ligs. 1(5, 17. 



Shell perforate, obhmg-tnrreted, thin but rather solid ; white, 

 creamy or yellow, with longitudinal /i r/ili'-lirmrti atrfjn's which may 

 continue to the base, or be inff/-/-iijitfi{ l>y n busu/ lit/fit zone bordered 

 // ilurL- /minis ; the stripes generally irregular or forked above. Sur- 

 face ;_'l"--y, smooth except for slight growth-lines. Spire long, apex 

 rather obtuse. Whorls I'l.'j to 7, convex, the la>l decidedly so. 



