VERTAGUS. 



285 



litteratum, Born. 

 luctuosum, Mhe. 

 maculosum, Kien. 

 moniliferum, Kien. 

 morus, Lam. 

 muscarum, Say. 

 mutabile, C. B. Adams. 

 nigrescens, Mke. 

 nodulosum, Brug. 

 ocellatum, Brug. 

 peloritanum, Cantr. 

 planum, Anton. 

 pulicarium, Phil. 

 punctatum, Brug. 



rubus, Martyn. 

 rugosum, Wood. 

 Eiippellii, Phil. 

 scabridum, Phil. 

 semiferrugiueum, Lam. 

 septemstriatum, Say. 

 suturale, Phil. 

 tuberculatum, Linn. 

 tuberosum, F. Coliim. 

 uncinatum, Gmel. 

 variabile, C. B. Adams. 

 variegatum, Quoy. 

 versicolor, C. B. Adams. 

 vulgatum, Brug. 



Genus VERTAGUS, Klein. 



Shell turreted, many-whorled ; canal strongly recurved 

 over the back of the last whorl ; columella thick, callous, 

 with an oblique plait in the middle. 



Syn. Aluco, Link. Khinoclavis, Sivains. 



Ex. V. vulgaris, Schumacher, pi. 30, fig. 1. Oper- 

 culum, V. vulgaris, fig. 1, «, \, h. Shell, V. vulgaris, 

 fig. 1, c. 



This genus differs from Cerithium, not only in texture 

 and general appearance, but in the recurved beak at the 

 fore part of the aperture, and in the single, strong, oblique 

 fold in the middle of the columella. 



Species of Vertagus. 



aluco, Linn. 



articulatus, Adams and Reeve. 



asper, Linn. 



attenuatus, Phil. 



fasciatus, Brug. 

 gemmatus. Hinds. 

 Guinaicus, Phil. 

 Kochi, Phil. 



