173 



The granular coriaceous sculpture of this shell Varies čonsiderably 

 in ditFerent individuals. 



Mitra Cūmingii. Mitr. testd ovatd, utrinque attenuatd, spira 

 acuminato-turritd ; anfractibus superne angulatis, longitudinaliter 

 costatis, costis numerosis, ad angulum mucronatis, liris transversis 

 angustis cancellatis, interstitiis impressis ; aurantio albogue pecu- 

 liariter maculato-variegatd, maculis aurantiis nigro-lineatis ; colu- 

 melld guadripUcatd. 

 Conch. Icon., Mitra, pi. 10. f. 67. 



Hab. Matnog, province of Albay, island of Luzon (found on the 

 ■reefs) ; Cuming. 



I dedicate this species to H. Cuming, Esq., as being one of the 

 most beautiful and characteristic of the many interesting new Mitrės 

 collected by that indefatigable naturalist during his researches 

 amongst the Philippine Islands. 



Mitra rubiginosa. Mitr. testd elongato-ovatd, subfusiformi, trans- 

 versim crebrisulcatd, suleis puncturatis ; albd, rubiginoso-tinctd ; 

 columelld quinquepUcatd, plicis infimis subobscuris. 

 Conch. Icon., Mitra, pi. 10. f. 68. 



Hab. Island of Ticao, Philippines (found on the reefs at low vvater) ; 

 Cuming. 



The iron-mould spots on this shell exhibit rather a tessellated 

 style of arrangement. 



Mitra interlirata. Mitr. testd subelongatd, spird acutd, trans- 

 versim liratd, liris numerosis, acutiusculis, lira minore intercur- 

 rente, interstitiis striis longitudinalibus elevatis cancellatis ; albd, 

 maculis perpaucis distantibus aurantio-fuscescentibus tinctd; colu- 

 melld subumbilicatd, guingueplicatd, plicis infimis subobscuris ; 

 basi leviter ascendente ; aperturd longiusculd. 



Conch. Icon., Mitra, pi. 10. f. 70. 



Hab. Island of Masbate, Philippines (found in sandy mud at the 

 depth of four fathoms) ; Cuming. 



The narrow intermediate ridge forms a prominent feature in this 

 species. 



Mitra Zebūensis. Mitr. testd subfusiformi, nitidd, basin versus 

 sulcatd, liris planiusculis, confertis, subtilissime cancellatd, liris 

 longitudinalibus fortioribus ; albidd, anfractuum parte superiori 

 maculis grandibus perpaucis castaneo-fuscis ornutd ; columelld 

 guingueplicatd. 

 Conch. Icon., Mitra, pi. 10. f. 73. 



Hab. Island of Zebu, Philippines (found on the reefs at lo.w water) ; 

 Cuming. 



The brown spots being situated around the upper part of the whorls 

 give an irregular tessellated character to the spire. 



Mitra inkecta. Mitr. testd ovatd, basi recurvd, spird acuminatd ; 

 anfractibus striis impressis cinctis, ultimo tumidiusvulo ; pullide 

 flavd, maculis castaneo-fuscis pictd ; columelld obsolete sexplicatd. 



