591 



alba, epidermide cinnamomea tecta ; spira perforata. Long. 8 lin., 

 lat. 3| lin. 



Shell solid, elongately cylindrical, transversely finely striated, 

 white, covered with a reddish-brown epidermis ; spire perforated. 

 Length 8 lines, width 3| lines. 



New Holland ; Port St. George. 



103. Bulla Sarsii (pi. cxxv. f. 135), Philippi. 



B. testa ovato-cylindracea, postice truncata, antice producta, 

 apice perforata, alba, transversim tenuissime striata ; apertura 

 angusta ; columella antice uniplicata ; labro postice producto. 



Shell ovately cylindrical, posteriorly truncate, anteriorly pro- 

 duced, apex perforated, white, transversely very finely striated ; 

 aperture narrow ; columella anteriorly with a single fold ; outer 

 lip posteriorly produced. 



Hab. ? Mus. Hanley. 



104. Bulla occulta (pi. cxxv. f. 136), Mighels, Bost. 

 Journ. Nat. Hist. vol. iv. p. 54. pi. iv. f. 11. 



B. testa parva, alba, ovato-cylindrica, striis minutissimis trans- 

 versis et striis longitudinalibus incrementi tecta ; spira, occulta ; 

 labro supra elevato, medio recto ; apertura subangusta, infra lata, 

 rotundata. 



Shell small, white, ovately cylindrical, covered with very minute 

 transverse stria? and longitudinal lines of growth ; spire concealed ; 

 outer lip elevated above, straight in the middle ; aperture rather 

 narrow, anteriorly broad and rounded. Length \ in., width in. 



New England. 



105. Bulla alba (pi. cxxv. f. 137), Brown. 



B. testa ovato-cylindracea, alba, apice immerso, callo columel- 

 lari obtecto, longitudinaliter substriata, transversim sub lente sub- 

 tilissime striata ; apertura angusta ; labro arcuato ; labio antice 

 recto, uniplicato. 



Shell ovately cylindrical, white, apex sunken, covered by the 

 columellar callus, longitudinally substriated ; aperture narrow; 

 outer lip arched ; inner lip anteriorly straight, with a single, 

 oblique, rather obsolete plait. Under the lens the shell is finely 

 striated transversely. 



British Islands. Mus. Hanley. 



