40 BOOK OF SPECIES. 



attenuated at the base, bluish white, with many 

 fulvous bands ; spire very short ; pillar with four 

 plaits; lip toothed. ^. (Front. 2.) 



CYCLOSTOMA. TERRESTRIAL. 



Variable in shape ; volutions cylindrical ; aperture 

 circular^ entire, and reflected, in the adult state; 

 operculum horny. 



C. vOLVULUM. Trochiform, deeply umbili- 

 cated, transversely striated, variegated with red 

 and yellow ; spire acuminated ; aperture white or 

 yellow ; lip with its margin reflected. IJ. W. 

 32. 7- 



C. LABEO. Oblong-obtuse, umbilicated, pel- 

 lucid, decussated, white or reddish, with minute 

 yellow forked spots in transverse series ; lip re- 

 flected, white, dilated, and open.' 1^. W. 32. 

 120. 



C. FLAVUL.UM. Cylindraceous, chrysalis-like, 

 solid, smooth, reddish yellow ; whorls eight, rather 

 convex ; aperture surrounded by a yellow ring ; 

 lip margined without. 1^. W. 32. 114. 



C. ELEGANS. Ovate-conic, with five ventri- 

 cose whorls, strongly striated transversely, and 

 crossed by very fine longitudinal lines, greyish or 

 purplish white, elegantly spotted with chocolate 

 brown. /^. B. The lip of adult specimens has 

 its margin slightly reflected. T. Jb. 



