OPHICARDELUS. 245 



Sub-gen. tifata, H. and A. Adams. 



Shell sub-globose ; aperture narrow, contracted ; inner lip with 

 two, spiral, elevated, lamellar plaits at the fore part ; outer lip 

 internally lirate. 



cingulata, Pfeiff. globulus, Ferus. 



Floridana, Shuttl. pulchella, Petit. 



Sub-gen. signia, H. and A. Adams. 



Shell ovate, whorls granular, or decussated with longitudinal 

 and transverse grooves ; outer lip internally with a single, trans- 

 verse, elevated rib. 



exarata, H. and A. Adams. granifera, Mouss. 



Sub-gen. peesa, H. and A. Adams. 



Shell ovate ; spire obtuse, whorls longitudinally ribbed and 

 transversely striated ; aperture wide ; outer lip acute, simple 

 internally. 



costata, Quoy and Gaim. duplicata, Pfeiff. 



costellaris, H. and A. Adams. 



Genus OPHICARDELUS, Beck. 



Shell ovate-oblong, umbilicated, smooth ; spire elevated, 

 sub-conic ; aperture oval ; inner lip anteriorly dilated and 

 reflexed, with two plaits at the fore part, the posterior spiral 

 forming an elevated ridge round the umbilical region ; outer 

 lip thin, simple. 



Ex. 0. australis, Bruguiere, pi. 82, fig. 9. Shell, 0. 

 australis, fig. 9, a. 



VOL. II. K K 



