GENUS BUCCINUM. 43 



than all the others, and separated by a broad and deep suture, 

 forming a kind of scaffold, which renders it very round above. 

 The other whirls are not very apparent ; at their surface is 

 seen, besides the longitudinal folds of which we have spoken, 

 transverse striae which terminate in the lowest whirl. The 

 aperture is ovate, oblong, narrow, sinuous, white within, and 

 narrowed above by a double deposition of calcareous matter ; 

 the right lip, striated internally, is thick above, and denticulat- 

 ed upon the remainder of its length. The columella, sinuous 

 in its middle, is covered by the left lip, which is pretty thick, 

 and partially conceals at its base a grooved columellar cal- 

 losity. The coloring of this shell is whitish, marked with 

 brown or fawn colored spots or bands. 



Length 20 lines. Width 10 lines. 

 Inhabits New Holland. 



This shell, the characters of which we have given from an 

 old specimen, exhibits somewhat the aspect of a COLUMBELLA, 

 which is owing to the shortening of the spire, and to the narrow- 

 ing of the aperture. Some young specimens so little resemble 

 the adult, that we might be led to form a new species of it ; and 

 it is only by attentive observation, that we recognise their af- 

 finity. The young (female?) specimens, are generally more 

 ventricose, and more elongated ; they have altogether the form 

 of the BUCCINUM of our first section. The aperture is much 

 wider, the thickening above, and the scaffold of the lowest whirl 

 do not exist ; but the pretty prominent transverse striae are seen 

 upon that whirl. We have given a figure, pi. 18, fig. 65, which 

 approaches to our type. Another (male '?) variety, is much 

 smaller, and colored upon the lowest whirl with transverse bands 

 of a deep brown. 



