»jvjii «, n\Jij\jyi X . 



161 



C. pardalina. C. fulgurans. 



C. scripta. C. mendicaria. 



C. ovulata. C, turturina. 



C. nitida. C. punctata. 



C. zonalis. C. unifascialis, 



C. siromhiformis. The Strombus-shaped Columbella. PI. 

 29, fig. 6. 

 The type of this genus, partly characterized by its name. 



C. mercatoria. The merchant Columbella. 

 Ovate, white, sulcated, transversely clouded with brown 

 or yellow ; outer lip dentated internally. 



2. Mitra. The Mitre Shell. Eighty species. 



A numerous and elegant genus of shells, separated by La- 

 marck from the Voluta on account of possessing several 

 strong distinctive characters. The spire is always pointed, 

 and the columellar plaits, diminishing in size, are always 

 transverse and parallel to each other. 



The exterior is sometimes most beautifully marked with 

 transverse grooves, striae, punctures, or granulations ; the 

 colour of almost every hue. 



Shell turreted, sub-fusiform, and oval ; the spire always 

 pointed at the summit ; the aperture small, triangular, wider 

 and strongly notched anteriorly ; the external edge sharp, 

 almost straight, always longer than the columella, which is 

 formed by a very thin callosity, and marked with oblique 

 parallel plaits, of which those anterior are the shortest. 



Mitra episcopalis. Mitra pediculus. 



M. papalis. M. lactea, 



M. pontificalis. M. cornicularis. 



M. puncticulata. M. lutescens. 



M. millepora. M. striatula. 



M. cardinalis. M. subulata. 



M. archiepiscopalis. M. cornea. 



M. versicolor. M. tringa. 



M. sanguinolenta. M. melaniana. 



