72 Panama Shells. PURPURID.E. 



Panama ; Jay. 

 Panama ; C. B. A. ! 

 We collected on the reef 275 specimens. 



64. Bttccliium saraiimoleiitiim. 



Purpura sanyuinolenta Duel, in Guer. Mag. Zool. pi. 22. 



f. 1. 1833. 



Pollia hcemastoma Gray in Zool. Beech. Voy. p. 112. 1839. 



Buccinum hcemastoma Reeve Conch. Icon. pi. 7. f. 46. Dec. 1846. 



- Janclii Val. Voy. Venus. Moll.pl. 6. f. 1. 1846. 



-- sanguinolentumMenke in Zeitsch. Malak. p. 180. Dec. 1847. 



Station. Under stones at low water; Gaming ! Reeve. 



A few of our specimens were found alive in the same situa- 

 tion ; but as. most of them were occupied by hermit crabs, at 

 low water mark, it is probable that their favorite station may be 

 somewhat lower. 



Habitat. Panama ; Cuming ! Eeeve. 



Mazatlan; Melchers! Menke. 

 Panama ; Jay. 



Taboga and Panama; C. B. A. ! 

 We collected 16 specimens. 



65. Hitcomueta @tmBp*osiinamm. Nov. Sp. 



Shell long ovate-conic : rather pale slate color, more or less 

 white above, with the revolving ridges brownish red or white 

 where they cross the ribs, white in the upper half of the labrum, 

 often with a broad white spiral band on the middle of the 

 whorls : on each whorl with seven or eight stout transverse 

 ridges, which are less prominent on the back of the last whorl ; 

 with several spiral linear ridges, of which four are visible on 

 the penult whorl, which are obsolete between the transverse 

 ridges, and are more numerous and smaller anteriorly ; covered 



