220 



RADULA OF THE RACHIGLOSSA 



(h) The Hachiglossa comprise i,he 1 2 families Olividae, Harpi- 

 dae, Marginellidae, Voliitidae, Mitridae, Fasciolariidae, Turbinel- 

 lidae, Buccinidae, Nassidae, Colmnbellidae, Mm-icidae, and 



Fig. 116.— a tooth 

 from the raduha 

 of Conus iniperi- 

 alis L., S. Pacific, 

 X 50, showing 

 barb and, poison 

 duct. 



Fig. 117. — Portion of the radula of Melongena 

 vespertilio Lam, , Ceylou, x 30. 



Fig. 118. — Portion of the radula of Eburna japonica 

 Sowb., China. x 30. 



Fig. 119.— Portion of the 

 radula of Murex regius 

 Lam. , Panama. x 60. 



Coralliophilidae. Certainly most and probably all of these 

 families are or have been carnivorous, the Coralliophilidae being 

 a degraded group which have become parasitic on corals, and 

 have lost their teeth in consequence. The characteristics of the 



