DESCRIPTION. 151 



Specimen white with Hvid 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. S3 7. fig. 63. 



Specimen fuscous, thick ; lower whorl twice as 

 large as the next, the others longitudinally plait- 

 ed and transversely striate with three impressed 

 lines. 



Inhabits the Indian Ocean. 



PLATE XVIII. 



Fig. 1 . MuREX Trilulus^ 



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 



