MUREX. Panama Shells. 121 



Habitat. Unknown ; Reeve. 

 Panama ; C. B. A. ! 

 We collected 6 specimens of this very aberrant species. 



136. .Mum duMus. 



Synonymy. 



Murex aculeatus Wood (non Lam.) Ind. Test. Supp. pi. 5. f. 19. 1828. 



dubius Sowb. Conch. 111. No. 119. pi. 61. f. 23. 1841. 



Reeve Conch. Icon. pi. 26. f. 116. Aug. 1845. 



Station. Under stones near low water mark. 



Habitat. Unknown ; Wood. 



Panama ; Cuming ! Sowerby : also Reeve. 

 Mazatlan ; Melchers ! Menke. 

 Panama ; Jay. 

 Panama ; C. B. A. ! 



We collected 72 specimens on the reef. The spines are 

 remarkably acute. 



137. ]?Iurex erosus. 



Synonymy. 



Murex erosus Brod. in Proc. Zool. Soc. Lond. p. 174. Oct. 1832, 



- Mull. Nov. Test. Viv. p. 93. May 1836. 

 Sowb. Conch. 111. No. 104. pi. 60. f. 16. 1841. 



- Reeve Conch. Icon. pi. 32. f. 160. Aug. 1845. 



Station. Under stones ; Cuming ! Broderip : also Reeve. 

 Our specimens were found under stones near low water 

 mark. 



Habitat. Panama ; Cuming ! Broderip : also Sowerby : and 



Reeve. 



Panama ; C. B. A. ! 

 We obtained 2 specimens on the reef. 



JULY, 1852. 9 AifN. LTC. NAT. HIST. 



