OTININvE. 249 



Sjjecies of Pedipes. 



afer, G-mel. ovalis, C. B. Adams. 



augulatus, G. B. Adams. quadridens, Pfeiff. 



conciunus, C. B. Adams. tridens, Pfeiff. 



Sub-fam. OTININiE. 



Animal amphibious, living near the sea. Tentacles rudi- 

 mentary ; eyes placed on the head. 



Shell ear-shaped; columella!" margin simple; outer lip 

 simple, acute. 



Genus OTINA, Gray. 



Tentacles nearly obsolete ; eyes sessile on the upper part 

 of the head at their hind bases. Foot divided by a trans- 

 verse groove across its centre, and furnished with a creeping- 

 disk at each end. 



Shell ovate, of few whorls, the first very large and ven- 

 tricose, those of the spire very small ; aperture large, 

 oblong, entire ; inner lip without plaits ; outer lip simple, 

 acute. 



Ex. 0. otis, Fleming, pi. 83, fig. 5. Shell, 0. otis, 

 fig. 5, a. 



The lingual dentition of Otina is similar to that of 

 Ellobium and other Pulmonifera, being in numerous cross 

 series, with about sixty in each row; the head is large, 

 broad, and obtuse, and the mouth, vertically cloven, is 

 furnished with distinct jaws and a short tongue. These 

 animals, whose shells so closely resemble those of Velutina, 

 inhabit chinks of rocks between tide-marks ; they progress 



