MUREX.— Plate XVn. (Tlies. 396.) 



Fig. 



160. CTACANTHA, sp. 50, — ? — Eed Seai 

 161 and 205. imperialis, sp. 161, Swains. Zool. 111. 2 ser. 

 pi. 67. — California. West Indies. 



162. Maoillivrati, sp. 9, Miirch. P.Z.S. 1862. Hab. — ? 



163. BicoLOE, sp. 162, Vcclenc. Humb. et Bonpl. Voy. vol. ii. 



1821.— Peru. 



164. CEISP0S, sp. 137, Brod.F.Z.S. 1835. — Pascomayo, Peru. 



165. REGIUS, sp. 160, Wood, Ind. Test. Supp. pi. 5, p. 13. — 



Panama. 



166. BHASsiCA, sp. 154, Lam., ducalls, Brod. and Sowb. — 



Gulf of California. 



