PLATE 34. 



Cros.s spctiou through radula sac of Lophomenia .spirahs. X •'57. 



LongitiuUnal section through radula and subradular organ of Pronconicnia liawaiiensis. 



Dorsal \ic\v of radula of Liniifossor talpoideus. X 135. 



Two rows of teeth of Stropliomenia triangularis. X 330. 



Portion of radula of Alexandromenia agassizi. X 255. 



Side view of radula of Limifossor taljioideus. X 135. 



Teeth of Dorymcnia acuta (mid line to left). X 330. 



Teeth of Strophomenia spinosa, large individual. X 555. 



Same species, small individual. X 330. 



Same species, small individual. X 330. 



Side view of teeth of Dorymcnia acuta. X 330. 



Cross section of radula of Halomenia gravida. X 330. 



Proncomenia hawaiiensis, showing 7 of the 40 teeth of each transverse row; m, mid line. 



Tooth of Alexandromenia valida. X 200. 



Portion of radula of Strophomenia farcimen. X 255. 



