442 IIALIOTID.Tl. 



nebulata, Reeve. sepiculata, Reeve. 



pertusa, Reeve. Sieboldii, Reeve. 



planilirata, Reeve. squamata, Reeve. 



pustulata, Reeve. squamosa, Gray. 



rubiginosa, Reeve. Tayloriana, Reeve. 



rufescens, Swains. tuberculata, Limi. 



rugosa, Reeve. varia, Linn. 



rugoso-plicata, Chem. viridis, Reeve. 



scutulum, Reeve. Zealandica, Reeve. 



semistriata, Reeve. zic-zac, Reeve. 



Genus TEINOTIS, H. & A. Adams. 



Foot very large and thick, greatly produced, and with 

 a d^ep, superior, longitudinal groove posteriorly. 



Shell depressed, elongate, ear-shaped ; spire sub-spiral, 

 posterior, produced beyond the last whorl ; aperture very 

 large, much wider than long, pearly within and perforated 

 with a series of holes, 



Si/n. Haliotis, Montf., not Linn. 



Ex. T. asinina, Linnceiis, pi. 50, fig. 6, 6, a. Shell, 

 T. asinina, fig. 6, h. 



TeinotiSy in its development of foot and consequent 

 greater locomotive power, seems to bear the same relation 

 to the other genera of this family that Cryptoplax does 

 among the Chitonidee. As in Haliotis, the anal lobe of 

 the mantle-margin is protruded from the last-formed per- 

 foration of the shell, the other holes progressively closing 

 with the growth of the shell. The Teinotis lives among 

 the rocks and reefs along the shore, and crawls with con- 

 siderable vivacity ; in the typical species, the lateral 

 membrane of the foot, when fully expanded, is slightly 

 reflexed over the dorsal surface of the shell. 



