PLEUROTOMA. 



Plate X. 



Species 80. (Mus. Belcher.) 



Pleurotoma felina. Pleur. testd cylindraceo-oblon- 

 gd, albicante, fasciis rubidis curvatis, la/is, subdis- 

 tantibus, longitudinaliter pictd ; anfractibus convexis, 

 transverse striatis, striis elevntiusculis ; canali bre- 

 vissimo. 



The cat Pleukotoma. Shell cylindrically oblong, 

 white, longitudinally painted with rather distant, 

 broad, festooned, reddish bands ; whorls convex, 

 transversely striated, striae rather elevated, canal 

 very short. 



Hinds, Pro. Zool. Soc, 1843. 



Hub. New Ireland (found in seven fathoms mud) ; Hinds. 



A very characteristic species remarkable on account of 

 the broad festooned bars of reddish brown which pass 

 down the shell at intervals. 



Species 81. (Mus. Petit.) 



Pleurotoma sinistealis. Pleur. testa fits iformi, acu- 

 minato-pyramidali, sinis trail, pal/ide violaced; an- 

 fractibus convexis, decussatim striatis ; sinu lato; ca- 

 nali brevi. 



The sinistral Pleueotoma. Shell fusiform, acumi- 

 nately pyramidal, sinistral, pale violet colour ; 

 whorls convex, decussately striated ; sinus broad ; 

 canal short. 



Petit, Guerin's Mag. de Zool., 1S39, pi. 1. 



Hub. West Coast of Africa, between Senegal and the 

 equator. 



This is the only left-handed species of Pleurotoma at 

 present known. 



Species 8:2. (Mus. Cuming.) 



Pleueotoma eximia. Pleur. testd gracile fusiformi, 

 albd, anfractibus convexis, costis angustis longitudina- 

 libtis, striisque transversis elevatis, exim'ie cancellatd; 

 sinu subindistincto ; canali mediocri, leviter tortuoso. 



The delicate Pleurotoma. Shell slenderly fusiform, 

 white ; whorls convex, delicately cancellated with 

 narrow longitudinal ribs, and elevated transverse 

 stria; ; sinus rather indistinct ; canal middling, 

 slightly twisted. 



Reeve, Pro. Zool. Soc, 1843. 



Hub. Island of Masbate, Philippines (found under stones 

 at low water) ; Cuming. 



The canal of this Muriciform species, though some- 

 what indistinct, fully entitles it to a place amongst the 

 Pleurotoma. 



Species 83. (Mus. Belcher.) 



Pleueotoma gemmata. Pleur. testd elongatd, gracillime 

 fusiformi, pal/ide fused ; anfractibus numerosis, medio 

 valde carinatis, carina nodu/is quadratis semipelluci- 

 dis eximie gemmata, superne concavis, lineis duabus 

 elevatis cingulatis, anfractu ultimo infernc multiline- 

 ato ; canali elongato. 



The gemmed Pleurotoma. Shell long, very slenderly 

 fusiform, pale brown; whorls numerous, strongly 

 keeled round the middle, keel delicately studded 

 with square semi-transparent nodules ; upper part 

 of the whorls concave, encircled with two very di- 

 stinct elevated lines, lower part of the last whorl 

 lineated ; canal long. 



Hinds, Pro. Zool. Soc. 1 843. 



Hab. Gulf of Magdalena, California (found in sandy 

 mud at the depth of seven fathoms) ; Hinds. 



One specimen only of this very elegant shell was col- 

 lected at the above place in H. M. S. Sulphur. 



Species 84. (Mus. Cuming.) 



Pleurotoma albibalteata. Pleur. testd ovato-oblongd. 

 luted, albibalteatd, anfractibus convexis, transverse 

 lineatis, longitudinaliter noduloso-costatis ; lubru in- 

 crassato , sinu parvo ; canali brevi, recurvo. 



The white-belted Pleueotoma. Shell ovately oblong, 

 yellow, with a single white belt round the middle 

 of each whorl ; whorls convex, lineated transversely, 

 nodulously ribbed longitudinally ; lip thickened, 

 sinus small ; canal short, recurved. 



Reeve, Pro. Zool. Soc. 1843. 



Hab. Island of Ticao, Philippines (found in sand at the 

 depth of six fathoms) ; Cuming. 

 The white belt which passes round each of the whorls 



of this shell is of a peculiarly opake nature. The ribs 



are more distant from each other in some specimens 



than in others, and the lower part of the last whorl is 



occasionally stained with dark brown. 



April 1*43. 



