ion VMS \. 



whorls thive, rounded smooth; aperture narrow, posteriorly pro- 

 duced, rather contraetrd in the middle, dilated anteriorly, outer lip 

 rather hent in and thickened in the middle ; rolnmella with the fold 

 very distinct. (J</. I, 



Bay nf Mnni//<i, -> fnis. (Cmning). 



T. polita, A. Ad., Thes., p. 571, pi. 121, f. 39. 



T. SIMIM.KX A. Adams. PI. 25, fig. 51. 



Shell ovately cylindrical, white shining, polished, smooth, covered 

 with a fuscous epidermis ; spire elevated, whorls five, the first one 

 mammillated ; spiral lamina conspicuous ; aperture narrow, dilated 

 anteriorly ; columella slightly callous, plait obsolete. (Ad.). 



Cagayan, Mindanao, Philippines, 35 fms. (Cum ing) ; Japan (A. 

 Ad.). 



T. simplex AD., Thes. Conch, ii, p. 570, pi. 121, f. 38 ; Ann. Mag. 

 N. H. (3), ix, p. 153. 



T. CINCTELLA A. Adams. PI. 25, fig. 48. 



Shell cylindrically fusiform, apex acuminated, rather smooth, 

 semipellucid, longitudinally sulcated, encircled with two white spiral 

 bands ; spire acuminated, whorls four, the first prominent ; aperture 

 narrow, anteriorly dilated ; columella with a very distinct plait ; 

 umbilical fissure deep. (Ad.). 



China Sea (Cum ing). 



T. cinctella A. AD., Thes. Conch, ii, p. 569, pi. 121, f. 35. 



The two white bands on a pellucid ground, and the umbilical fis- 

 sure distinguish this species. 



T. COARCTATA A. Adams. PI. 25, fig. 44. 



Shell ovately cylindrical, somewhat narrowed in the middle, 

 white, shining, engraved with very fine close spiral lines ; spire 

 somewhat depressed, whorls four, suture deeply channelled, encircled 

 with a spiral lamina from the columellar callus; aperture narrow, 

 contracted in the middle, inferiorly dilated ; columellar callus with 

 an obsolete fold ; outer lip rounded above, subinflexed in the 

 middle. (Ad.). 



Ticao, Philippines, in 6 fms. (Cuming) ; Mauritius (Martens). 



T. coarctata AD., Thes. Conch, ii, p. 568, pi. 121, f. 31. MAR- 

 TENS in Mobius' Reise nach Mauritius, p. 303. 



