139 



antice angustatd, basi subrecurvd ; columelld plicis quatttor in- 

 structd. 

 Hah. China Seas. 



A small, turreted, light-coloureds pecies, with undulating ribs and 

 clathrated interstices. 



39. MiTRA MARMOREA, A. Adams. M. testdfusiformi-turritd; 

 spird acuminata ; anfractibus planiusculis ; olivuced, ru/o-fuscd 

 marmoratd, longitudinaliter costatd, costis lavibus, crassis, superrie 

 subnodosis ; interstitiis transversim exarutis ; columelld plicis 

 quinque ; basi subcontortd et recurvd. 



Hah. Tambay, Isle of Negros, coarse sand, 10 fathoms. 

 Greenish, marbled with fuscous ; ribs flat and broad ; interstices 

 with transverse engraved lines. 



40. MiTRA TURRicuLA, A. Adams. M. testd fusiformi-turritd, 

 alba, cameo sparsim pictd, anfractibus superne angulatis ; longi- 

 tudinaliter costatd, costis crassis, Icevibus, distantibus, supra nodosis, 

 interstitiis sulcato-clathratis ; aperturd spiram tequante; columelld 

 plicis quatuor, supremis duabus duplicatis ; basi vix recurvd. 



Hub. ? 



A small, elegant, turreted species, with smooth, thick ribs, and the 

 interstices punctate-clathrate. 



41. MiTRA PALLIDA, A. Adams. M. testd turrito-fusiformi; 

 spird productd, acuminata; anfractibus convexiusculis ; albidd, 

 sparsim rufo-fusco pictd, longitudinaliter costatd, costis nodulosis, 

 interstitiis clathrato-punctatis ; aperturd brevi, antice angustatd, 

 basi productd, tortuosd et recurvd ; columelld quadriplicatd. 



Ilab. Marquesas. 



A delicate, small, pale species, with scattered red-brown blotches, 

 and with the interstices between the ribs clathrate-punctate. 



42. MiTRA JuKESii, A. Adams. M. testd ovato-fusiformi ; spird 

 acutd, aperturcE dimidium aquante ; anfractibus planis, prope su- 

 turas angulatis; albidd, fasciis castaneis transversis ornatd; trans- 

 versim sulcatd, sulcis, prope suturas, profundioribus ; longitudina- 

 liter plicatd, plicis obtusis, distantibus, prope suturas nodulosis ; 

 columelld plicis quatuor instructd ; labro intus lavi. 



Hub. North Australia (Jukes). 



This species is intermediate between M. corrugata and M. vulpe- 

 cula, but is distinct from both. 



43. MiTRA CRENiPLiCATA, A. Adams. M. testd ovato-fusiformi; 

 spird acuminatd; anfractibus planulatis ; brunned, longitudinaliter 

 plicatd, lilicis crenatis tcnuibus ; transversim liratd, liris tequali- 

 bus, confertis, nodulosis ad plicas ; aperttird spiram aquante ,■ 

 labio j)ostice calloso, antice dilatato ; columelld plicis quatuor in- 

 structd ; labro intus dentato-Urato, margine incrassato, 



Ilab. ? 



This species belongs to the group named by Mr. Gray Zierliana, 



