(1) Murex truncuhis, L. \. 



(2) Ptirpura hcemasioma. Lam. \. 



(3) Murex branderis, L. \ (after Reeve). 



(4) Triton tritonis, L. \, .showing hlow-hole on side of spire. 



(5) Turbinella pyruvi, L. (the Chank), \, showing blow-hole at apex of spire. 



(From drawitii^s by Mrs. IVilfrid Jackson. ) 



