MITIU.— Plate XXI. 



The keeled Mitre. Shell fusiform, spire turreted; 

 whorls slightly angulatcd at the upper part, encircled 

 upon the angle with a single keel-like ridge, trans- 

 versely impressly striated above, smooth below, olive- 

 brown; columella four-plaited. 



Swainson, Zoological Illustrations, 2nd Series. 



Unli. Sierra Leone ; Mawe. 

 Very nearly allied to the Mitra Senegalends (Sp. 129.), 



but forms a decided keel round the upper part of each 



Species 164. (Mus. Cuming.) 

 .Mitka carnicolor. Milr. testa subabbreviato-fusifoi 



alternis majoribus, undique 

 <pressis longitudinaliter ine 

 fuscescente, inkus rosacea, ,• i 



„n 11,1 quinqtieplicatd, plica infimd subobscurd. 



The flesh-coloured Mitre. Shell somewhat abbre- 

 viate!)' fusiform, encircled with small rather obtuse 

 ridges, the alternate of which are the larger, ridges 

 longitudinally carved with impressed stria? ; pale fleshy 

 brown without, pink within ; columella five-plaited, 

 lowest plait rather obscure. 



Reeve, Pro. Zool. Soe., 1844. 



Eab, - •? 



A neatly sculptured debcately tinted shell, quite distinct 



from any hitherto described species. 



Species 165. (Mus. Belcher,) 



Mitra Hindsii. Milr. testa lanceolato-fusiformi, spird 

 acutissime turritd ; anfractibus superne angulatis, infra 

 angulum leviter contractis, tramversim carinato-costatis, 

 costd super angulum prominentiore, interstitiis concavis, 

 subtilissime elevato-striatis ; lutescente, costis spadiceis, 

 epidermide tenui indutd; columella quadriplicatd, pli- 

 cis duabus inferiorities fere obsoletis ; apertura fauce 

 subrosaced. 



Hind's Mitre. Shell lanceolately fusiform, spire verj 

 sharply turreted ; whorls angulated at the upper part, 

 slightly contracted beneath the angle, transversely 

 carinately ribbed, rib upon the angle more prominent 

 than the rest, interstices concave, very finely elevately 

 striated; yellowish, ribs pale brown, covered with a 

 thin epidermis: columella four-plaited, the two lower 

 plaits almost obsolete; interior of tile aperture tinged 

 with pink. 



Reeve, Pro. Zool. Soc, 1844. 



Eab. Gulf of Nicoya (found in mud at the depth of about 

 seventeen fathoms); Hinds. 



This beautiful species which I have the pleasure of de- 

 dicating to a most zealous labourer in the field of concho- 



logical research, may be recognised by its graceful form 

 and by the keel-like elevation of the ribs. 



Species 166. (Mus. Cuming.) 

 Mitra latruncularia. Milr. testa abbreviato-fusiformi, 

 temiculd, haul truncatd; transversim undique sulcata, 

 sulcis angustis, crebris, punctatis ; albidd, rubido-cas- 

 taneo tessellatd etfasciatd; columella quadriplicatd. 

 The chess-board Mitre. Shell shortly fusiform, rather 

 thin, truncated at the base; transversely grooved 

 throughout, grooves narrow, close set, punctured; 

 whitish, thickly tessellated and banded with reddish 

 chesnut -brown ; columella four-plaited. 

 Reeve, Pro. Zool. Soc, 1844. 



A sbght thin shell closely grooved throughout, the 

 grooves being minutely punctured, and the intermediati 

 ridges prettily tessellated with white and reddish brown. 



Species 167. (Mus. Cuming.) 

 Mitra Schroeteri. Mitr. testa abbreviato-fusiformi, 

 tenuiculd, quasi corned, bad truncatd, vix emarginatd, 

 hi mgatd ; corneo-fuscescente, junta suturasfusco macu- 

 latd, anfractu ultimo maculis albidis perpaucis in au- 

 dio subindistincte fasciato ; columella quadriplicatd. 

 Schroeter's Mithe. Shell shortly fusiform, rather thin, 

 as if horny, truncated at the base, scarcely emargi- 

 nated, smooth ; pale horny brown, spotted with brown 

 nexl the sutures, last whorl indistinctly banded with 

 a very few wlute spots; columella four-plaited. 

 Deshayes, Auiin. sans vert, (note), vol. x. p. 323. 

 Voluta cornicula Schroeteri, Chemnitz. 

 Mitra cornicularis, Lamarck. 



Hob. ? 



To Chemnitz and to M. Deshayes are we indebted for 

 having dissipated the confusion occasioned by Schroeter 

 mistaking this species for the Voluta cornicula of Linmeus. 



Species 168. (Fig. Swainson.) 



Mitra punctata. Milr. testa oca/a', eramusculd, spird 

 brt vi, subconicd; transvt rsiin punctato-striatd ; olivaceo- 

 fused; co < d sex-plicatd ; labro crenulato. 



The punctured Mitre. Shell ovate, rather thick, .-pin- 

 short, somewhat conical, transversely striated and 

 punctured; olive-brown ; columella six-plaited; lip 

 crenulated. 



Swainson, Zoological Illustrations, 2nd Series. 



Had. ? 



Mr. Swainson has given so accurate an account of this 



shell that I have ventured to give a copy of his figure. 



