195 



Tiara mucronata. Tiara testd longitudinaliter costatd, trans- 

 versim striatd, striis sub-punctatis, anfractibus noduloso-muri- 

 cutis prcEcipue suturam versus, albiddfusco vel ferrugineo fasci- 

 atd, fascid basali latissimd ; columelld quadriplicatd : long. 1, 

 lat. -^ poll. 



Hab. ad Insulam Taheiten. 



Found ia soft muddy sand at low water within the reef. 



Tiara catenata. Tiara testd ovatd, longitudinaliter costatd, al- 

 bidd suturam versus punctis sanguineis fasciatim dispositis con- 

 cinnd, apice subviolaceo, anfractu basali bifasciato, /asciis fusco- 

 castaneis ; columelld quadriplicatd : long. ■%, lat. -^ poll. 



Hab. ad Insulam Annaan. 



Found on the reefs in shallow water. 



On the paper, "Type 1, 3." 



Tiara multicostata. Tiara testd longitudinaliter multicostatd, 

 transversim substriatd, brunned vel ferrugined alba fascial d ; co- 

 lumelld quadriplicatd : long. -I-, lat. ^ poll. 

 Hab. ad Insulam Annaan. 

 Found on the reefs in shallow water. 



In the ferruginous individuals the white band is nearly obso- 

 lete, and would almost justify their separation as a variety : but 

 such individuals of that colour as have been submitted to me appear 

 to be young. 



Tiara ROSEA. Tiara testd multicostatd, cost is postice subtubercu- 

 losis, creberrime transversim sulcatd, rosed alba fasciatd ; co- 

 lumella quadriplicatd: long. 4-, lat. ^ poll, 



Hab. ad Insidas Lord Hood's dictas. 



Found on the reefs in shallow water. 



On the paper, "Type 1, 2." 



Tiara millecostata. Tiara testd subovatd, longitudinaliter cre- 

 berrime costatd, basi cancellatd, nigro-castaned, apice albido ; co- 

 lumelld triplicatd : long. ^, lat. i^ poll. 

 Hab. ad Insulam Annaan. 

 Found on the reefs in shallow water. 



The close-set longitudinal ribs and cancellated base give this shell, 

 which may not have attained its full growth, the aspect of a Can- 

 cellar ia. 



Tiara lineata. Tiara testd fusiformi, albidd hinc et hinc cas- 

 taneo strigatd, lineis elevatis castaneis cinctd ; columelld tripli- 

 catd ; epidermide valde tenui : long. 1, lat. ^ poll. 



Hab. ad Salango Colombiae Occidentahs. 



Found on sandy mud in ten fathoms water. 



The elevated lines run from the apex to the base like the threads 

 of a screw. 



On the paper, " Ty^e 5, 1 ." ' 



Tiara nivea. Tiara testd fusiformi, albd, lineis creberrimis sub- 



