DESCRIPTION, 
151 
Specimen white, with livid spots, forming two 
obsolete bands ; inner lip ochraceous with darker 
strise, the strim of the outer lip brownish purple ; 
tubercles on the lower whorl flat on one side. 
Inhabits the Indian Ocean. 
Fig. 4. S. pahistris. 
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. 
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PLATE XVIIL 
Fig. 1. Mu REX 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 
