71 



labrum evanescentibus, et striis impressis decussatis ; stria sutu- 

 rali majori, seriem gemmularum effbrmante : spira acuto-conica, 

 anfr. 6 convexiusculis : apertura 4- long, testae haud equans, 

 rotundato-ovata, lactea ; labro intus crenulato ; sinu siphonali 

 mediocri. Long, f; lat. ^ poll. Hab. Pacific shore. 



I know not any species with which to compare this, except 

 perhaps, Bucc. corrugatum, from which it differs in its aperture. 

 Its elongated form, oblique folds on the outer whorl, and its white 

 aperture, are its most conspicuous characters. The revolving 

 fawn-colored lines only appear when its deep brown epidermis is 

 removed. 



Columbella valga. T. ovato-lanceolata, sub-distorta, fulvo- 

 marmorata et lineolis crebris rufis cincta, ad apicem rosacea : 

 spira acuminata, anfr. 9-10 convexiusculis, supernis longitror- 

 um tenuiter plicatis, ultimo laevi, contracto, caeteris nonconformis 

 f long, testae adequante ; sutura profunda : apertura angusta, 

 lunata; labro arcuato acuto, intus sulcato : columella transversim 

 plicata, callosa ; sinu siphonali angusto, producto. Long. J- ; 

 lat. | poll. Hab. Pacific ? 



Closely allied to C. avara, Say, in form, size, and ground 

 color, but readily distinguished by its distorted form, the encir- 

 cling chestnut lines, and the want of revolving striae between the 

 folds. 



Columbella castanea. T. parva, solida, elongata, ovata, 

 laevis, castanea vel fascia angusta albida cincta : spira ovato- 

 conica, anfr. 7 convexis, ultimo ovali §• long, testae superante, ad 

 basim spiraliter striato : apertura ampla, alba ; labro recto, pos- 

 tice emarginato, rufo-tincto, intus sub-plicato; columella antice 

 plicata; sinu siphonali amplo. Long. £ ; lat. $ poll. Hab. 

 Rio Janeiro. 



Compared with C. unicolor it is smaller, the aperture is less 

 rotund, and it has a pale cincture. 



Columbella gausapata. T. parva, solidula, elongata, ovato- 

 conica, ad basim spiraliter striata, sub epidermide rudi subrufo 

 concinne rufo-reticulata vel variemode maculata aut fasciata : 

 spira conico-turrita, anfr. 6-7 convexiusculis, ultimo f long, 

 testae, antice subito in rostrum brevem angustato ; sutura valde 

 impressa : apertura angusta lunata ; labro simplici, rufo, intus 

 sparse denticulato. Long. £; lat. | poll. Hab. Puget Sound. 



