72 UNIVALVES.—CONUS, 



C. Elongated and nearly straight. 



Semilituus. Radicula. 



Lituus (Crozier.) Fascia. 



Obliquus. Inaequalis. 



Raphanistriim. Siphunculus. 



Raplianus. Legumen. 



Granum. Orthocera. 

 *Belemnita. 



CONUS.-CoNE. 



Animal—a Limax: Shell univalve^ convolute^ turbinate: 

 aperture effuse, longitudinal, linear ^ without teeth, en- 

 tire at the base ; pillar smooth. 



Of this beautiful and valuable genus there are but eighty • 

 three described as distinct species; however, that num- 

 ber is certainly very much under the real amount. The 

 general form of cones is very similar ; their principal dif- 

 ferences consist in the coloring, marking, and band- 

 ing, though form sometimes assists their arrangement 

 in classes; as for instance, those shaped like the Conus 

 marmoreus and imperialis, make one division. Another 

 division is formed of those species which are similar to 

 the Conus betulinus or butter-firkin, Conus glaucus, &c. 

 all of which are of very broad and thick structure, quite 

 the reverse to the Conus general is or flambeau cone, 

 which is very long and narrow, having its spire very 

 acute and prominent. 



