332 



tis ; sutura impressa : apertura parva, rotundata ; labro incras- 

 sato intus denticulis et sulcis instructo ; columella excavata leviter 

 plicata. Axis 8 ; diam. 4 millim. Inhabits Kikaia. W. S. 



Nassa plebecula. T. parva, solida, elongata, ovato-conica, 

 albida ; anfr. 8 sutura profunda sejunctis, plicis ad 1 6 ornatis 

 plerumque ad anfr. ultimum carentibus, et fills nitidis rufescenti- 

 bus ad 5 cinctis quorum uno majore : apertura parva, subrotunda ; 

 labro albo intus denticulato et sulcato, extus late incrassato, fusco 

 maculato ; rostro abbreviate. Axis 15 ; diam. 7 millim. Inhabits 

 Ousima. W. S. 



More slender than -AT. ambigua and mcrassata, but closely 

 allied. 



Nassa pediculina. T. parvula, solida, ovato-conica, rudis, 

 straminea, plicis ad 12 elevatis et fills rufescentibus 5 ad plicas 

 dilatatis ornatis ; anfr. 7 convexis, apicalibus simplicibus, ultimo 

 antice coarctato ; sutura profunda : apertura subcircularis ; labro 

 obtuso, extus incrassato ; columella callo erecto instructa ; sinu 

 siphonali profundo. Axis 6 ; diam. 4 millim. Inhabits Hong 

 Kong Harbor. W. S. 



Most noticeable for its large folds, unfinished aspect, and con- 

 striction about the beak. 



Nassa sptjrca. T. parva, acuta, ovato-conica, cinerascens 

 vel rufescens linea spirali flavida cincta, plicis numerosis et fills 

 supercurrentibus ubique cancellata ; anfr. 7 ventricosis : apertura 

 parva rotundata ; labro extus incrassato, intus sulcato ; columella 

 arcuata, caUo fuscescente sparsim granulato induta ; fauce fusco 

 vittata. Axis 10 ; diam. 6 millim. Inhabits St. Simon's Bay, in 

 12 fathoms, sandy. W. S. 



The fine rasp-like surface and dusky aspect, with the single 

 pale belt, distinguish it ; somewhat like a small iV. trivittata. 

 This and the preceding belong to the subgen. Tritia, Adams. 



MiTRA JACULANDA. T. parva, symmetrica, fusiformis, cine- 

 reo-rubescens fusco dilute nubeculata, sulcis longitudinalibus fere 

 continuis et lineis volventibus levioribus (8) anticis sensim remo- 

 tioribus clathrata; anfr. 7 rotundatis, ultimo § longitud. testae 

 adaequante ; sutura exili : apertura angusta ; labro intus denticu- 



