PLEUBOTOMA.— Plate XXXVI. 





Reeve, Pro. Zool. Soc. 1846. 



Hub. Isle of Capul, Philippines (on the reefs.) ; Cuming. 

 A very characteristic species, and easily recognized by 

 its style of colouring. 



Species 332. (Mus. Taylor.) 

 (Magnified to twice its length.) 



Pleubotoma Vahlii. Pleur. testa tenui, ohlonijd, spird 

 acuminata, sttturd subprofundd, anfractibus rotundatis, 

 flexuose plicatis ; intus extusque cinereo-fusca, columel- 

 la albd. 



Yahl's Pleukotoma. Shell thin, oblong, spire acumi- 

 nated, suture rather deep, whorls rounded, flexuously 

 plaited ; ashy brown within and without, columella 

 white. 

 Defrancia Vahlii, Moller. 



Hub, Greenland. 



The sinus of this species is probably represented by 

 little more than a slight indenture. 



Species 333. (Mus. Cuming.) 

 (Magnified to nearly three times its natural length.) 



Pleukotoma semen. Pleur. testa oblowjd, spird mucro- 



natd, anfractibus lavibus, medio oblique plicatis, apertu- 

 rdparvd, sinu prof undo ; castaneo-fuscd, plicis albidis. 



The seed Pleubotoma. Shell oblong, spire pointed, 

 whorls smooth, obliquely plaited in the middle, aper- 

 ture small, sinus deep ; chesnut-brown, plaits whitish, 



Reeve, Pro. Zool. Soc., 1846. 



Hub. San Nicolas, Island of Zebu, Philippines (under stones 

 at low water) ; Cuming. 



A small brown species, the whorls of which are encir- 

 cled round the middle by a row of short oblicjue whit< 

 plaits. 



Species 334. (Mus. Cuming.) 



Pleukotoma Pakia. Pleur. testa oblongd, spird acumi 

 nato-turritd, anfractibus superue concavis, infra plica- 

 to-costatis, costis angustis, subjiexuosis ; albd, fascii 

 pallide aurantid iudistinctd chujulatd. 



The Parian Pleurotoma. Shell oblong, spire acurni- 

 nately turreted, whorls concave round the upper part, 

 plicately ribbed beneath, ribs narrow, rather nexuous 

 wlute, encircled with a very faint indistinct orange 

 band. 



Reeve, Pro. Zool. Soc. 1846. 



Hub. ? 



This shell has a beautiful opake white marble appearance, 



