PLEUROTOMA.— Plate XXIX. 



The cankered Pleurotoma. Shell acuminately t ar- 

 reted, -whorls longitudinally somewhat obsoletely pli- 

 cately ribbed, interstices very minutely impressly stri- 

 ated ; whitish, sutures livid-green, lower portion of 

 the last whorl entirely livid-green edged with a zone 

 of black dots, apex reddish-brown. 



Reeve, Pro. Zool. Soc, 1845. 



Hab. ? 



The colouring of this species, it may be observed, is of 

 a character totally distinct from that of any other. 



Species 262. (Mus. nost.) 



Pleurotoma OBLiauATA. Pleur. testa, ovoid, subobesd, 

 spird acuminata, anfraetibus medio angulato-tumidis, 

 oblique costatis, costis ad unguium nodosis ; intus ex- 

 tusrjue Jtavido-fuscd, zona pallida angustd ad unguium 

 cingulatd. 



The crooked Pleurotoma. Shell ovate, rather stout, 

 spire acuminated, whorls angularly swollen in the 

 middle, ribs nodose at the angle ; yellowish-brown 

 within and without, encircled with a narrow pale zone 

 at the angle. 



Peeve, Pro. Zool. Soc, 1845, 



Hob. ? 



Distinguished not only by its peculiarity of form and 

 colouring, but by the curious oblique twist of the ribs. 



Species 263. (Mus. Metcalfe.) 

 Pleurotoma pellis-phoce. Pleur. testa pyramidali, 



anfraetibus eonvexis, longitudinaliter fortiter et creber- 

 rime granulatis, transversim subsuleatis apertura pecu- 

 liarity parvd, sitm indktincto. 



The seal-skin Pleurotoma. Shell pyramidal, whorls 

 convex, longitudinally slightly grooved ; aperture pe- 

 culiarly small, sinus indistinct. 



Reeve, Pro. Zool. Soc, 1845. 



Hab. ? 



The sinus is very indistinct in this interesting little shell, 

 although it has the outward form of the genus. 



Species 264. (Mus. nost.) 



Pleurotoma vexillum. Pleur. testa acuminato-elongatd, 

 longitudinaliter crebricostatd, basi transversim liratd ; 

 aperturd parvd, sinu amplo, aliidd, suturis et an/ractiis 

 ultimi parte inferiorifuscis. 



The flag Pleurotoma. Shell acuminately elongated, 

 closely ribbed, transversely ridged at the base ; aper- 

 ture small, sinus large ; sutures and lower part of the 

 last w T horl dark brown. 



Reeve, Pro. Zool. Soc, 1845. 



Hab. ? 



Distinguished by its dark chocolate brown banded style 

 of colourina;. 



Fig. 265. — A species of Purpura or Buccinum, inadver- 

 tently figured for a Pleurotoma. 



For Species 265, see PL xxxix. 



