Fig. 



I. 



Fig. 



2, 



Fig. 



3' 



Fig. 



4' 



Fig. 



5' 



Fig. 



6. 



Fig. 



7- 



Fig. 



8. 



Fig. 



9- 



Fig. 



10. 



Fig. 



1 1. 



PLATE XXIV. 



Teeth of radula of Plios nodicostatus A. Ads. 



Teeth of radula of Engina histrio Rve. 



Teeth of radula of Engina niendicaria Lin. 



Teeth of radula of Nassaria sntiiralis A. Ads. 



Teeth of radula of Trophon obtiiseliratiis n. sp. 



Teeth of radula of Murex nigrispinosits Rve. 



J. Teeth of radula of Murex tenuispina Lam. 



Teeth of radula of Mitrex ternispina Lam. 



Teeth of radula of Murex aduncospinosus (Beck) Rve., var. concinna Rve. 



Teeth of radula of Murex rnartinianus Rve. 



Teeth of radula of Murex axicornis Lam. 



