70 LESSON XI. 



Teacher, Yes, the spire is so called from its 

 crown-like appearance : do you observe any 

 other peculiarity in it ? 



Child. The whorls are concave ; and in most 

 shells they are convex. 



Teacher. The whorls in this shell form a 

 little spiral channel, and are thence said to be 

 channelled. We will now write down the spe- 

 cific character ; but I must inform you, that the 

 name marmoreus is derived from the Latin mar- 

 wior, marble ; and is applied to these shells on 

 account pf their mottled appearance. 



CONUS Marmoreus* 

 MARBLED CONE. 



Specific character. Shell ponderous, smooth, 

 dark chestnut brown, with white sub triangular 

 spots ; spire coronated, whorls concave ; size, 

 from twp to three inches in length. 



* Plate II. fig. 1. 



