PLEUROTOMA.— Plate VII. 



nularis of the ' Encyclopedie M6thodique ' ; it is impos- 

 sible to identify it by the figure. 



Species 55. (Mus. Belcher.) 



Pleurotoma militaris. Pleur. teste! elongatd, acumi- 

 nato-turritd, albd; anfractibus liris nodulosis sub- 

 tilissime decussatis, interstitiis striatis ; superne con- 

 cavis, carina '■ subnodosd marginatis ; aperturd oblon- 

 gd ; canali brevi, recurvo. 



The military Pleurotoma. Shell long, acuminately 

 turrited, white; whorls very finely decussated with 

 nodulous ridges, transversely striated in the inter- 

 stices ; upper part of the whorls concave, edged 

 with a slightly nodulous keel ; aperture oblong ; 

 canal short, recurved. 

 Clavatula militaris. Hinds, Pro. Zool. Soc, 1843. 



Hob. Veragua, Central America (found in mud at the 

 depth of eighteen fathoms) ; Hinds. 



Species 56. (Mus. Stainforth.) 



Pleurotoma carinata. Pleur. testd fusiformi, turritd, 

 albicante, maculis punctisque rubidis pare'e ornatd ; 

 anfractibus medio plano-carinatis, carind eximie mo- 

 niliferd, supra concaviusculis, striatis, infrh multi- 

 carinatis, carinis interlineatis ; fissurd centrali,ampld; 

 canali longiusculo. 



The keeled Pleurotoma. Shell fusiform, turrited, 

 whitish, sparingly ornamented with reddish dots 

 and spots ; whorls flatly keeled round the middle, 

 keel delicately beaded ; above the keel rather con- 

 cave, striated ; below it numerous other keels with 

 a line running between them ; fissure central, large ; 

 canal rather long. 



Gray, Griff. Cuv. An. King., pi. 23. 



Pleurotoma Kieneri, Doumet, Mag. de Zool. 



Hab. ? 



I was at one time inclined to suppose that the figure 

 in Griffith's 'Cuvier,' above referred to, was intended for 

 my PL speciosa ; the specimen there represented has 

 however been kindly sent to me by Mr. Gray, and I find 

 it to be identical with the shell subsequently dedicated 

 to Kiener by M. Doumet. 



pallide. fulvd, transversim striatd ; anfractibus medio 

 nodulosis, nodulis albis, superne concavis, anfractu ul- 

 timo subalato, sinu amplo ; aperturd oblongd ; canali 

 brevi, paululum recurvo. 



Griffith's Pleurotoma. Shell somewhat fusiform, 

 yellowish, transversely striated; whorls nodulous in 

 the middle, nodules white, upper part concave, last 

 whorl slightly winged, sinus large ; aperture oblong, 

 canal a little recurved. 



Gray, MSS. (private cabinet). 



ffab. ? 



A common species, not much unlike the Pl.Stromboides 

 in shape. 



Species 58. (Mus. Cuming.) 



Pleurotoma excentrica. Pleur. testd pyramidali-ob- 

 longd, crassd, brunned ; anfractibus duobus excen- 

 tricis, superne unicarinatis, carind undulatd ; infri 

 spiraliter sulcatis, delude longitudinaUter costatis, cos- 

 tis transversim liratis ; aperturd brevi. 



The distorted Pleurotoma. Shell pyramidally ob- 

 long, thick, brown ; whorls, the two last of whicl 

 are out of the centre, keeled near the suture, kee 

 undulated ; beneath spirally sulcated, then longitu 

 dinally ribbed, ribs transversely ridged ; apertun 

 short. 



Sowerby, Pro. Zool. Soc, 1833. 



Hub. Gallapagos Islands (found in coral sand at thi 

 depth of six fathoms) ; Cuming. 



The excentric growth of this shell gives it a verj 

 curious appearance, the last and penultimate whorli 

 looking exactly as if they had slipped from their origina 

 lodgement. 



Species 57. (Mus. Gray.) 

 Pleurotoma Griffithii. Pleur. testd subfusifurmi, 



Species 59. (Mus. Gray.) 



Pleurotoma major. Pleur. testd subfusiformi, fused 

 transversim albo-lineatd, anfractibus medio nodulosis 

 nodulis albis ; aperturd oblongd, canali paululum re- 

 curvo. 



The greater Pleurotoma. Shell somewhat fusiform 

 dark brown, transversely marked with white lines 

 whorls nodulated in the middle, nodules white 

 aperture oblong, canal a little recurved. 



Gray, MSS. (private cabinet). 



Hab. ? 



Very closely allied to the PL Griffithii ; indeed some 

 authors would account it to be a variety of that species 



