PLATE V. 

 Tethys cervina Dall and Simpson. 



Fig. 26. Median and first lateral teeth on either side, 24th and 



25th rows of radula. x 94. 

 Fig. 27. Sixth, seventh and eighth lateral teeth, 24th and 25th 



rows of radula. x 94. 

 Fig. 28. Seven outer lateral teeth of 29th and 3<Dth rows of 



radula. x 94. 

 Fig. 29. Detail of sixth lateral tooth of 2oth row of radula. 



x 180. 

 Fig. 30. Detail of I4th lateral tooth of 30th row, from opposite 



side of radula. x 180. 



