g GENUS PYR AMIDELLA. 



Inhabits the Pacific ocean, the Isle of France, the Isle of 

 Vanikoro. 



Young specimens of this species are very slightly striated, and 

 of a reddish color ; undulating lines and brown spots, distributed 

 here and there, cover the shell. Some specimens are of a still 

 redder color, and the points upon the shell are then more 

 numerous, and of a deeper tint. 



6. PYRAMIDELL-A GRACIL.IS, BROCCHI. The Slender Pyra- 



midella. 



(Collect, du Museum.) BROCCHI, Conch., subapp., pi. 6, 

 fig. 6, a-b. 



Pi. II, fig. 7. 



P. testa cylindrica, angusta, apice acutissima, nitida, albida ; spira elon- 

 gata; anfractibus convexiusculis, frequentibus ; suturci simplici, depressa ; 

 apertura parva, oblonga. 



Shell cylindrical, narrow, very pointed at its summit, slender, 

 turreted, brilliant, whitish, slightly striated longitudinally ; spire 

 elongated, and formed of fifteen or sixteen somewhat distinct, 

 approximate, convex whirls ; the lowest divided at its middle by 

 a transverse, narrow, shallow stria. Suture simple, indistinctly 

 channeled and flattened. Aperture small, oblong, a little nar- 

 rowed at its extremities. Columella almost straight, a little 

 turreted at its base, and provided with three folds, the first of 

 which is more marked. Right lip thin, sharp, obliquely sinu- 

 ous in the middle of its length ; its lower extremity extends a 

 little beyond the columella, and forms in this part a shallow 

 contraction or little gutter. 



Length 10 lines. Width 3 lines. 

 Inhabits 



This pretty little species, one of the most cylindrical of the 

 genus, has some resemblance in its form to the PYRAMIDELLA 

 maculosa. Ferussac refers this living species to the fossil shell 

 figured by Brocchi, t. 2, p. 282, tab. 6, fig. 6, under the name of 

 TURBO gracilis, and which is found at Saint Just, near Valterra, 

 in the south of France. 



