GENUS PYRAMIDELLA. 5 



are adorned with longitudinal, undulated, reddish, or brown 

 lines, quite near together ; wide, brown spots often partially 

 cover them, a line equally brown passes over each whirl ; upon 

 the lowest are found three others, which sometimes form 

 quite large bands of the same color. The sutures are slightly 

 canaliculated. Aperture ovate, whitish, marked likewise, with 

 a few brown lines towards the depth of the cavity, exhibiting 

 pretty distinct furrows. Right lip thin, terminated below by 

 a small canal, at its union with the columella, which is slightly 

 arcuated, with three folds at its base, the first very prominent. 

 Umbilicus indistinctly marked. From the base juts out a 

 round fold, which is seen to turn in a spiral manner in the 

 umbilicus. Operculum ovate, membranous, its laminae not 

 spiral, having one or two notches to receive the folds of the 

 columella. 



Length 15 lines. Width 6 lines. 



Inhabits the island of Vanikoro, where it is found in great 

 abundance. 



It is to Q,uoy and Gaimard that conchologists owe a know- 

 ledge of this species, which is remarkable for the distribution of 

 its longitudinal lines. I suppose that the PYRAMIDELLA fasciata 

 of Fefussac must.belong to the species I have just described, but 

 in an injured state ; upon that specimen, transverse bands only 

 are perceptible. 



3. PYRAMIDELLA PLICATA, LAM. The Plaited Pyramidella. 

 (Collect. MASS. LAM.) LIST., pi. 577, fig. 32, a. 



Pi. I, fig. 4 



P. testa ovato-oblonga, solida, longitudinaliter plicata, alba, punctis rufis 

 seriatim cincta ; plicis laevibus ; interstitiis transverse striatis; ultimo an- 

 fractu spira turgidula breviore. 



Shell ovate, elongated, solid ; spire pointed, composed of 

 ten or eleven slightly convex whirls, distinct and separated by a 

 narrow scaffolding accompanying the suture, which is somewhat 



