1<K> 



T. I'usio, Pliilippi. 



Longitudinally costate, nodulous above, granular al base, with 

 revolving impressed strhx? ; white, with a narrow chestnut central 



band interrupted by the ribs. Length, -35 inch. 



Ifab. unknown. 



An untigured species, omitted by the iconographers, and 

 unknown to me except by the short description. 



T. VARIATA, Reeve. PI. 56, fig. 635. 



Yellowish brown with a dark superior band, and a white band 

 with dark margins below the middle. Length, '1 inch. 



Paumotus and Viti Islands, coral reefs. 



Animal light brown, spotted with yellowish white. T. frater- 

 <-nla, Garrett, is a synonym. 

 T. DISCORS, Grandidier. PI. 56, figs. 636, 63?. 



Spire and upper half of the body-whorl lilac or yellowish white, 

 periphery with a narrow white band, lower half of body-whorl 



chestnut-brown. Length, '6 inch. 



Caroline Islands (Pease). 



I 4,mite with this species T. glabra, Pease (not Swains.), 

 changed by Pease to T. lubrica (fig. 637). The original descrip- 

 tion in Kiister has no locality, and the figure is poor, though 

 recognizable. 

 .T. NODOSA, Swainson. PI. 56, figs. 638-641. 



White, sometimes with a central brown band or row of spots 

 interrupted by the tubercles, which cover the entire surface ; 

 upper part of body-whorl with close impressed revolving striae ; 

 aperture yellowish within. Length, '6--*l5 inch. 



Red Sea, Philippines, China. Polynesia, Mauritius. 



Mr. Garrett mentions a variety occurring at the Paumotus, 

 having a slate-colored band articulated with orange-yellow. I 

 unite with this species M. tuber culata, Kiener, M.fraga, Kiener 

 (tig. 640), not Quoy, M. pinguis, Reeve (fig. 641), which is a 

 juvenile, and M. cancellarioides, Anton. 



T. TUSA, Reeve. PL 56, fig. 642. 



Spire and upper portion of body-whorl white, with occasional 

 brown spots, lower portion of body-whorl brown. 



Length, '4 inch. Philippines to Sandwich Is. ; Red Sea. 



Animal greenish white, marbled with chocolate-brown. 

 25 



