138 UNIVALVES. 



of that fact. A very small species of the 

 Multilocular Cephalopodes called Miliola (being 

 about the size of a grain of millet) exhibits the 

 power of reproduction in an equally astonishing 

 degree. Around Paris these shells are found in 

 the fossil state in such prodigious quantities, 

 that small as they are, they form the principal 

 part of the immense masses of stone which 

 constitute several of its quarries. 



NAUTILUS Pcmpilius. * 



LARGE CHAMBERED NAUTILUS. 



Specific character. Shell with an involuted 

 and concealed spire, smooth; aperture cordate ; 

 colour whitish, with waved streaks of reddish or 

 yellowish brown, pearly within. 



This beautiful shell is often converted by the 

 inhabitants of the East into a drinking cup ; on 

 the surface they engrave various ornaments and 

 devices. 



NAUTILUS Spirula. 



CROSIER NAUTILUS. 



Specific Character. Shell thin, brittle, trans- 

 parent, with five cylindrical detached whorls 

 divided into numerous compartments, distin- 

 guished on the outside by a depressed circular 



* Plate VI. figure 4. 



