240 



occasioned, which is much increased by the position 

 of the varices at the sides. Shell oval or oblong, sub- 

 depressed, canaliculated at the base; aperture round- 

 ed or oval; varices straight or oblique; placed at regu- 

 lar intervals of each half turn of the whorl, and form- 

 ing a longitudinal row on each side, from the spire to 

 the base: these varices or thickened bands are some- 

 times smooth or tubercular, and in some species armed 

 with long straight spines. 



Ranella gigantea 



Ranella granulata 



leucostoma 



granifera 



candisata 



semigranosa 



Argus 



bitubercularis 



crumena 



ranina 



spinosa 



anceps 



bufonia 



pygmeea 



[There is one 



fossil species.] 



MUREX. 



MUREX BRANDARIS. LintlCBIlS. 



Mawe's Linneeus, plate 26,^. 2, S. 

 Mart. 3, M 14,/ 1058, 1059- 

 Notwithstanding the numerous divisions that La- 

 marck and other authors have made of the G.Murex 

 of Linnaeus, it still remains a beautiful and very nu- 



