NATICA. 79 



18. PAPTRACEA, f. 149, Soiverby. — Globosa, tenuissima, N. 

 porno similis, magis rotunda, spira exserta, anfractibus 

 rotundis ; columella sinuatim suhcallosa ; colore pallide fulvo 

 obscure bifasciato. — This shell bears a much nearer re- 

 semblance to Helix pomum than the preceding. 



19. FLAVA, f. 125, Gould. — Globoso-subturbinata, tenuis, 

 flavida, spira brevissima, ultimo depresso, apertura magna, 

 umbilico parvo, columella infra rectiuscula, supra medium 

 callosa. — Simple in form and light in structure, with a very 

 small callus on the upper part of the rather straight columella, 

 covering part of the umbilicus. 



20. CANEENA, f. 24, operc. f. 169, Linrueus. — Solida, 

 globosa, aureo quadrifasciata ad interstitia arcuatim castaneo 

 maculata; spira brevi, umbilico magno lato, spiraliter valide 

 univaricoso, anfractu idtimo rapide versus aperturam expanso ; 

 apertura magna, intus piu-purea, semirotunda ; columella rec- 

 tiuscula medio ad costam umbilicalem semirotunde callosa ; 

 operculo solido semispirali multicostato. — Distinguished by 

 bands of golden brown, with white interstices spotted with 

 dark bent markings. The lower outline of the body-whorl 

 is holloAved. Operculum half spiral, thickly ribbed. 



21. LiNEATA, f. 38, Lamarck. — Oblique globosa, albida, 

 lineis rubris undulatis, infra terminantibus strigata ; apertura 

 infra expansa, intus purpiu'ea, umbilico lato, varice spiral! 

 lato. — Delicately striped with thia undulating red lines, 

 with a broad spiral varix in the umbilicus ; aperture 

 obliquely pyriform, purple within. 



2 2. Elen.e, f. 1 50, Recluz. — Lineatce similis, magis obliqua, 

 lineis quadrifariam imdulatis ; varice umbilieali latissimo, 

 depresso. — More oblique than luieata, with the lines four- 

 waved, and the umbilical varix very broad and depressed. 



23. ZEBRA, f. 92, Lamarck. — Globosa, fulva, striis acute 

 et arcuatim undulatis seriatim picta ; spira acuta anfractibus 

 declivibus ; umbilico magno, callo spirali valido labio interno 

 tenuiiisculo, apertura oblique declivi. — The stripes are beau- 

 tifidly undulated in points and curves. 



24. ALA-PAPiLioNis, f. 46, Chcmnitz. — Canreiice forma simi- 

 lis, leviter concentrice plicata fusco-aurata ; interstitiis fas- 

 ciarum albis, tessellatim maculatis, varice umbilieali obliquo, 

 apertura oblique semicirculari, fauce purpurea. — Much re- 



