116 Panama Shelb. mubioid^. 



1 27. Triton constrictus. 



Synonymy. 



Triton constriclus Brod. in Proc. Zool. Soc. Lond. p. 5. Jan. 1833. 



! decussatum Valonc. Ilumb. Rec. Obs. 11. 300. 1833. 



constrictus Mull. Synop. Nov. Test. Viv. p. J 01. 1836. 



_ Reeve Conch. Icon. pi. 12. f. 41. May 1844. 



Station.— In sandy mud, in from 7 to 10 fathoms; Cuming 1 

 Broderip : also Eeeve. 



Habitat. — Monte Christi, and Xipixapi ; Cuming I Broderip : 

 also Eeeve : also Miiller. 

 Acapulco ; Humboldt and Bonpland I Valenciennes. 



(Triton decussatum.) 

 Panama ; C. B. A. ! 

 We were indebted to the hermit crabs for 4 specimens. 



128. Triton fkisoides. Nov. sp. 



Shell ovate-fusiform, slender: whitish, stained with brown, 

 with a white spiral stripe near the middle of the whorls : with 

 prominent narrow not approximate ribs, about nine on each 

 whorl, crossed by numerous raised fine spiral lines, of which 

 the alternate ones are mostly larger : apex acute : spire conic : 

 whorls eight, convex, with a well impressed suture: aperture 

 long subovate : canal short. 



Mean divergence about 35° ; length .76 inch ; breadth .28 

 inch. 



Station. — Unknown. 



Hahitat—Tahoga, ; C. B. A. 

 We obtained only 1 specimen. 



129. Triton gibbosus. 



Synonymy. 

 Triton gibbosus Brod. in Proc. Zool. Soc. Lond. p. 7. Jan. 1833. 



