CONCHOLOGY. 



171 



O. subulata. The awl-shaped Olive. PL 30, fig 1. 

 Species elongated, with very projecting spire. 



O. undata. The waved Olive. PI. 30, fig. 4. 



Species oval, spire hardly projecting. 



O. cruenta. The bloody Olive. 



Species cylindrical, suture canal deep ; fawn colour, with 

 triangular spots of purple, and two dark brown spots on the 

 edge of the outer lip. 



6. Conus. The Cone. One hundred and eighty-one 

 species. 



A genus valued on account of the beauty, symmetry, and 

 variety of its species ; some of its shells are very rare and 

 remarkable for their richness of colouring ; some are cor- 

 onated, and others have a plain spire. They are all covered 

 with an epidermis, beneath which is generally a smooth 

 surface, with sometimes a high polish ; a few are granulated 

 and tuberculated. They are found in great abundance in 

 the seas of warm climates. 



Shell conic, covered with a membranous periosteum, thick, 

 solid, involuted ; the summit of the cone anterior ; the spire 

 little or not at all projecting; aperture longitudinal, very 

 narrow, turning towards its anterior extremity ; the external 

 edge straight, with oblique plaits in its anterior part ; oper- 

 culum very small and horny, sub-spiral, with summit ter- 

 minal. 



Conus marmoreus. 

 C. Bandanus. 

 C. nocturnus. 

 C. Nicobaricus. 

 C. araneosus. 

 C. zonatus. 

 C. imperialis. 

 C. fuscatus. 

 C. viridulus. 

 C. rfiierius. 



Conus tulipa. 

 C. geographicus. 

 C. punctatus. 

 C. toeniatus. 

 C. musicus. 

 C. miliaris. 

 C. mus. 

 C. lividus. 

 C. Barbadensis. 

 C. roseus. 



