DESCRIPTION. 161 



Specimen white, with livid spots, forming two 

 obsolete bands ; inner lip ochraceous with darker 

 striae, the striae of the outer lip brownish purple ; 

 tubercles on the lower whorl flat on one side. 



Inhabits the Indian Ocean. 



Fig. 4. S. palustris. 



Shell rather smooth ; outer lip disengaged at 

 the base. 



Lister Conch. Tab. 837. Fig. 63. 



Specimen fuscous, thick ; lower whorl twice 

 as large as the next, the others longitudinally 

 plaited and transversely striate, with three im- 

 pressed lines. 



Inhabits the Indian Ocean. 



PLATE XVIII. 



Fig. 1. Murex Tribulus. 



Shell ovate, with three rows of setaceous spines, 

 striate; beak elongated, subulate, straight, and 

 spined in the same manner as the body. 



Lister Conch. Tab. 902. Fig. 22. 



Specimen pale yellowish brown, with brown 



