PLEUROTOMA. 



Plate IV. 



Species 22. (Fig. a and b, Mus. Stainforth.) 



Pleurotoma papalis. Plcur. testd fusiformi, acute 

 turritd, pallide luteo-brunnescente, anfractibus su- 

 perni co/icuvis, longitudinaliter leviter liratis, /iris 

 numerosis; anfractu ultimo pallide albo-fasciato ; 

 canali brevi. 



The papal Pleurotoma. Shell fusiform, sharply tur- 

 rited, pale yellowish brown ; whorls concave round 

 the upper part, longitudinally lightly ridged, ridges 

 numerous, last whorl encircled with a pale band ; 

 canal short. 



Reeve, Pro. Zool. Soc, 1843. 



Pleurotoma mitraformis, var., Kiener, Icon., pi. 21. 

 f. I a. 



Hub. ? 



After carefully examining one or two specimens of 

 this shell which Kiener describes as a variety of the 

 following species, I am forced to the conclusion that it 

 is specifically distinct. 



Species 23. (Mus. Stainforth.) 



Pleurotoma mitraformis. Pleur. testd elongato-fusi- 

 formi, apice acuminato, luteo-brunnescente, striis 

 numerosis, subgranulosis, transversim et longitudi- 

 naliter decussatd ; anfractibus superne leviter con- 

 cavis ; canali breviusculo. 



The mitre-shaped Pleurotoma. Shell elongately 

 fusiform, apex acuminated, yellowish brown, trans- 

 versely and longitudinally crossed with numerous, 

 somewhat granulated stria? ; whorls slightly concave 

 round the upper part ; canal rather short. 



Kiener, Icon. pi. 21. f. 1. 



Murex mitra-f ormis, Wood, Index Test. Supp., 

 pi. 5. f. 5. 



Hab. Coast of Senegal, Mouth of the Gambia, &c. 



This shell is longer and more cylindrical than the pre- 

 ceding, and never exhibits the fine longitudinal ridges. 



Species 24. (Mus. Stainforth.) 



Pleurotoma fascialis. Pleur. testd subfusiformi, tur- 

 ritd, anfractibus superne angulato-carinatis ; super- 

 fine multifuniculatis, funiculis nigro-fuscis, inter- 

 slitiis pallidioribus ; canali breviusculo. 



The corded Pleurotoma. Shell somewhat fusiform, 

 turrited ; whorls angularly carinated round the 

 upper part, entire surface encircled with fine black- 

 ish brown cords, the spaces between them being of 

 a paler colour ; canal rather short. 



Lamarck, Anim. sans vert., vol. vii. p. 93. 



Kiener, Icon., pi, 4. f. 2. 



Murex elegans. Wood, Ind. Test. Supp., pi. 5. f. 



Hab. Islands of Ticao and Masbate, Philippines; Cuming. 



Lamarck's description of this shell was evidently made 

 from a worn specimen, in which the rich dark brown 

 transverse cords had assumed a reddish cast of colour. 



Species 25. (Mus. Belcher.) 



Pleurotoma taxus. Pleur. testd solidd, conico-subvlatd, 

 flavescente, epidermide crassd,fusco-olivaced, indutd ; 



anfractibus in medio concuvis, inferne leviter nodu- 

 losis, longitudinaliter slriatis, striis superne sinis- 

 trorsum, inferne dextrorsum dispositis ; canali brevi. 



The yew Pleurotoma. Shell solid, conically subulate, 

 yellowish, covered with a thick, dark olivaceous 

 epidermis ; whorls concave in the middle, slightly 

 nodulous round the lower part, longitudinally 

 striated, stria? running obliquely towards the left 

 on the upper part of the whorl, to the right on the 

 lower ; canal short. 



Kiener, Icon., pi. 10. f. 1. 



Murex taxus, Chemnitz, Conch., vol. x. pi. 162. 

 f. 1550 and 1551. 



Hab. Cape of Good Hope ; Hinds. 



By the kindness of Capt. Sir Edward Belcher, whose 

 rich conchological stores, collected under the able super- 

 intendence of Richard Hinds, Esq., during a voyage of 

 more than seven years round the world in Her Majesty's 

 Ship " Sulphur," have been liberally offered for illustra- 

 tion, I am enabled to figure this highly interesting 

 species for the first time with its rich, dark epidermis. 

 Several specimens in different stages of growth were 

 dredged near the Cape of Good Hope by the zealous 

 naturalists above mentioned, and they vary most singu- 

 larly in form, some being considerably longer and nar- 

 rower (more Terebra-like) than the one I have selected 

 for illustration. The specific title of taxus appears to 

 have been selected for this shell by the author of the 



Feb. 1843. 



