57 



A solid ivor)'-\vhite sliell, encircled ^vith a dark band, Tvhich is 

 concealed in the upper part of the shell by the superposition of the 

 whorls. 



Mitra pinguis. Mitr. testd subobeso-ovatd, longitudinaliter sub- 

 obligue noduloso-costatd, transversim impresso-striatd, striis cre- 

 berrimis, anfractus ultimi parte inferiori sulcatd; albidd, fascid 

 unicd fuscescente cingulatd ; columelld ąuadriplicatd. 

 Conch. Icon., Mitra, pi. 36. f. 304. 



Hab. Puerto Galero, islaiid of Mindoro, Philippines ; Cuming. 

 The lašt w'horl of this shell exhibits a peculiarity of structure 

 •vvhich is worthy of observation ; above the brown band it is very 

 closely impressly striated across; below it, it is merely distantly 

 grooved. A clifFerence between the transverse sculpture of the upper 

 and lower portions of the w'horls is rarely met with. 



Mitra peculiaris. Mitr. testd elongatd, anfractibus leevibus, con- 

 cavis, carind unicd prominente superne ornatis ; albidd, fascid latd 

 luteo -fuscescente cingulatd; columelld biplicatd. 

 Conch. Icon., Mitra, pi. 36. f. 305. 



Hab. Puerto Galero, island of Mindoro, Philippines (found under 

 stones at low water) ; Cuming. 



This species may be easily distinguished by the hollow character 

 which is imparted to the vhorls by the very prominent keel round 

 the upper part. 



Mitra roborea. Mitr. testd pyramidali, spird acuminatd ; nigri- 

 cante-fuscd, liris albidis angustis undique funiculatd ; columelld 

 biplicatd, plicis subindistinctis ; aperturd parvd. 



Conch. Icon., Mitra, pi. 37. f. 306. 



Hab. ? 



An interesting dark pyramidal shell, encircled throughout with 

 \vhite cord-like ridges. 



Mitra radius. Mitr. testd gracili-fusiformi, spird acuminatd, basi 



contractd, subelongatd ; anfractibus longitudinaliter concentrice 



plicato-costatis, interstitiis cancellatis ; pallide carned, anfractu ul- 



timo fascid fuscescente busim ve7-sus cingulato ; columelld biplicatd. 



Conch. Icon., Mitra, pi. 37. f. 309. 



Hab. Isiand of Corregidor, Philippines (found among coarse sand 

 at the depth of seven fathoms) ; Cuming. 



A light elegant shell, in vvhich the ribs are of a peculiarly concen- 

 tric gro'wth. 



Mitra glandiformis. Mitr. testd ovatd, utringue attenuatd, spirte 

 suturis profunde impressis ; longitudinaliter costatd, costis Icsvibus, 

 interstitiis profunde clathratis ; cinereo-griseo alboqiie variegatd, 

 basi albicante ; columelld guadriplicatd. 



Conch. Icon., Mitra, pi. 37. f. 310. 



Hab. ? 



In most examples of this species the white rather predominates. 



Mitra cineracea. Mitr. testd pyramidali-ovatd, spird turritd. 



