144 



CONCHOLOGY. 



Shell. Thick, turbinated, with a short obtuse spire ; aperture 

 narrow, elongated and terminated by a very short canal, narrowed 

 by an inflation at the inner side of the right edge, and by some 

 folds on the columella; a very small horny operculum. Inhabits 

 the Indian and American seas. Twenty species. 



V 



Columbella rustica. 

 C Hebrana. 

 C. semipunctata. 

 C reticulata. 

 C strombiformis. 

 C. mercatoria. 

 C. flavida. 

 C. bizonalis. 

 C. turturina. 



Columbrella pardalina. 



C ovulata. 



C. zonalis. 



C. mendicaria. 



C. punctata. 



C. scripta. 



C. nitida. 



C. fulgurans. 



C. unifascialis. 



C. labiosa. 



C. avara."* 



2. Ganns Mitra. PI. XII. 



Animal. Entirely unknown. 



Shell. Turriculated, subfusiform and oval ; spire always 

 pointed at the summit ; aperture small, triangular, widest anteri- 

 orly where it is strongly emarginated ; external edge trenchant, 

 nearly straight, always longer than the columella, which is formed 

 by a very thin callosity, and marked with oblique parallel folds, 

 the anterior of which are the shortest; no operculum. Inhabits 

 the Chinese seas. Eighty species. 



Mitra papalis. 

 M. puncticulata. 

 M. cardinalis. 

 M. versicolor. 

 M. pedicula. 

 M. cornicularis, 

 M. striatula. 

 M. cornea. 

 M. melaniana. 

 . episcopalis. 

 M. pontificalisj. 



Mitra crocata. 

 M. nexilis. 

 M. scabrinscrula. 

 M. crenifera. 

 M. taeniata. 

 M. corrugata. 

 M. lyrata. 

 M. cinctella. 

 M. Caffra. 

 M. stigmataria. 

 M. fissurata. 



