ZIZIPHINUS. 421 



Troschelii, Phil. Zebueusis, A. Adams. 



zebrides, A. Adams. 



Genus ZIZIPHINUS, Leach. 



Shell tvochiform, often almost conical, axis imper- 

 forate, seldom umbilicated, umbilical region covered with 

 a callosity, last whorl angular at the circumference ; 

 aperture quadrangular ; columella simple, often ending in 

 a pointed tooth. 



S(/n. Trochilus, Humph., not Linn. Conulus, Nardo, 

 not Fitz. or K'dst. Calliostoma, Swains. Callistomus, 

 Herrm. 



Ex. 7j. conuloides, Lamarck, pi. 48, iig. 2. Oper- 

 culum, Z. conuloides, fig. 2, a. Shell, Z. conuloides, 

 fig. 2, b. 



The species of this genus are very numerous, often 

 brilliant in colour and of exquisite sculpture. The shells 

 are usually conical, with quadrate apertures, and with 

 the inner lip ending, in front, in a simple tooth-like 

 point. 



Species of Zizipliinus. 



agrestis, Phil. Cecillii, Phil. 



alabastrum, Beck. chlorostoma, Mke. 



alternatus, Phil. Chemuitzii, Phil. 



annulatus, Martyn. ciliaris, Mke. 



Aiitouii, Koch. cingulatus, Brocc. 



armillatus, Wood. coraptus, A. Adams. 



asperulatus, A. Adams. conuloides, Lam. 



bicingulatus, Lam. conulus, Linn. 



Californicus, A. Adams. crenulatus, Brocc. 



callichrous, Phil. Cunningbami, Gray. 



canaliculatus, Martyn. decoratus, Phil. 



