MITRA.— Plate I. 



Species 2. (Mus. Norris.) 



Mitra versicolor. Mitr. testd fusiformi- oblong d, sub- 

 ventricosd, spird acuminatd ; anfractibus transversim 

 subtilissime punctato-striatis ; lutescente aut fusces- 

 ccnte-albd, castaneo-fusco sparsim variegatd, maculis 

 a/bis plurimis minutis fusco-marginatis ornatd ; co- 

 lumella quadriplicatd. 



The variegated Mitre. Shell fusiformly oblong, ra- 

 ther ventricose, spire acuminated ; whorls trans- 

 versely very finely striated with punctures ; yellow- 

 ish or brownish white, sparingly variegated with 

 chestnut-brown and ornamented with numerous 

 small white spots edged with brown ; columella 

 four-plaited. 



Martyn, Universal Conch., f. 23. 



Valuta nubila, Gmelin, Chemnitz. 

 Variety? Mitra sanguinolenta, Lamarck. 



Hub. Zanzibar, east coast of Africa (found on the reefs 

 at low water) ; Thorn. 

 Lamarck's Mitra sanguinolenta appears to be a variety 



of this species, and not the shell figured for it by Kiener, 



which looks like a worn M. texturata. 



Species 3. (Mus. Norris.) 

 Mitra nebtjlosa. Mitr, testd fusiformi, spird acumi- 

 natd, transversim punctato-striatd, punctis subpro- 

 fundis, longitudinaliter subtilissime striatis ; alba, 

 maculis lutescentibus et luteo-fuscis nebulosd ; colu- 

 melld quinqueplicatd. 

 The clouded Mitre. Shell fusiform, spire acuminated, 

 transversely striated with punctures, punctures ra- 

 ther deep, longitudinally very finely striated; white, 

 clouded with yellow and yellowish brown spots; 

 columella five-plaited. 

 Swainson (Broderip), Pro. Zool. Soc, 1835. 

 Hab. Madagascar. Island of Annaa, Pacific Ocean (found 

 on the reefs at low water) ; Cuming. 

 Quite distinct from the Mitra versicolor, for the illus- 

 tration of which species it is figured by M. Kiener. 



Species 4. (Mus. Cuming.) 

 Mitra Swainsonii. Mitr. testd elongato-fusiformi, 

 turritd, spird productd, suturis subprofundis ; leevi- 

 gatd, basim versus striatd ; alba, carneo-fuscescente 

 pallidissime tinctd, apicem versus pracipue, epider- 

 mide corned olivaceo-fusco indutd; columella qua- 

 driplicatd. 

 Swainson's Mitre. Shell elongately fusiform, turreted, 

 spire produced, sutures rather deep ; smooth, 

 striated towards the base; white, stained with a 

 tinge of light fleshy brown, especially towards the 

 apex, covered with a horny olive-brown epidermis; 

 columella four-plaited. 



Broderip, Pro. Zool. Soc, 1835. 



Hab. Monte Christi, West Columbia (dredged from 

 sandy mud at the depth of seven fathoms) ; Cuming. 

 The accompanying figure of this fine species repre- 

 sents the shell before it was unfortunately deprived of 

 its epidermis. 



Species 5. (Mus. Norris.) 

 Mitra episcopalis. Mitr. testd elongato-ovatd, crassd, 

 solidd, spird acuminatd ; anfractibus prioribus con- 

 fertim punctato-striatis, cateris Iccvibus ; alba, ma- 

 culis grandibus subquudratis vivide rubris seriatim 

 pictd, superioribus muximis, irregularibus ; columella 

 quadriplicatd ; labro basim versus denticulato. 

 The episcopal Mitre. Shell elongately ovate, thick, 

 solid, spire acuminated ; first few whorls striated 

 with punctures, the rest smooth; white, painted 

 with rows of large, somewhat square bright red 

 spots, the upper of which are very large and ir- 

 regular ; columella four-plaited ; lip denticulated 

 towards the base. 

 D'Argenville, Conch., pi. 9. f. c. 

 Laiiarck, Anim. sans vert., vol. vii. p. 299. 

 Hab. Ceylon. Taheiteand the Philippine Islands (found 

 under coral on the reefs at low water) ; Cuming. 

 This species is most abundantly distributed through- 

 out the tropical regions. 



Species 6. (Mus. Norris.) 



Mitra Norrisii. Mitr. testd elongato-ovatd, crassd, 

 solidd, spird subobtuso-acuminatd ; striis transversis 

 et longitudinalibus, elevatis, confertis, undique sub- 

 tilissime reticulatd aut clathratd, transversis promi- 

 nent ioribus; eburned, epidermide corned, tenui, niger- 

 rimd ; columelld sexplicatd. 



Norris's Mitre. Shell elongately ovate, thick, solid, 

 spire rather obtusely acuminated, entire surface 

 very finely reticulated or latticed with close-set, 

 transverse and longitudinal raised strias, transverse 

 strias the more prominent ; ivory-white, epidermis 

 very black, thin and horny ; columella six-plaited. 



Reeve, Pro. Zool. Soc, 1844. 



Hab. ? 



I have much pleasure in dedicating this fine species, so 

 entirely distinct from any hitherto described, to Thomas 

 Norris, Esq., a worthy and esteemed patron of the natural 

 sciences, whose magnificent collection of Mitres has so 

 greatly contributed to the completeness of this mono- 

 graph. It is impossible to convey an adequate idea of 

 the finely reticulated sculpture of this unique shell by a 

 lithographed figure, it being so fine that the interstices 

 of the net-work resemble minute punctures. 



