MITR A 



Pl.A 



Species 7. (Mus. Cuming.) 



Mitra crassa. Mitr. testd oblongo-ovatd, crassd, soli- 

 da, spirit breviusculd ; anfractibus aurantio-brunneis, 

 liris angustis confertis cingulatis, superne lavibus, 

 balteo albido-luteo ornatis ; columella quinqueplicatd, 

 labro crenato. 



The thick Mitre. Shell oblong-ovate, thick, solid, 

 spire rather short ; whorls orange-brown, closely 

 encircled with narrow ridges, upper part smooth, 

 ornamented with a whitish yellow belt ; columella 

 five-plaited, lip crenated. 



Swainson, Zool. Illus., First Series. 



This species approximates very closely to the Mi/rn 

 aurantiaca \ it is however a stouter shell and one of 

 much more gigantic proportions, whilst the colour is 

 more of a dark brown. 



Species S. (Fig. a and b, Mus. Cuming.) 

 Mitra ambigua. Mitr. testd ovato-fusiformi, crassd, 

 solidti, bnsi paulu/um coarctatd, spin! siibacnmiiiatd -, 

 anfractibus complanatis, basim versus liratis, sulcis 

 cri/ibus tinc/iislis pititcturatis vingnhilis, aiirantiu- 

 fuscescentibus, fascid pallidd subindistinctd prope su- 

 turam ornatis; columella sc.c-plicatd, labro peculia- 

 riter plano-coarctato, rugoso-crenato. 

 The ambiguous Mitre. Shell ovately fusiform, thick, 

 solid, a little contracted at the base, spire some- 

 what acute ; whorls smooth, ridged towards the 

 base, encircled with faint narrow punctured grooves, 

 light orange-brown, ornamented with a rather indi- 

 stinct pale band near the suture; columella six- 

 plaited ; lip peculiarly flatly contracted, rugosely 

 crenated. 

 Swainson, Zool. Illus., Second Series. 

 Hab. Island of Ticao, Philippines (found among coral 

 under stones at low water mark) ; Cuming. 

 The Mitra. ambigua is illustrated in a truly ambiguous 

 manner by M. Kiener, who disposes of two other excel- 

 lent species of Mr. Swainson's, the Mitra fulva and 

 punctata, by quoting them as varieties of it. This con- 

 fusion should have been avoided, when it is remembered 

 that all three species are so accurately portrayed in 

 the ' Zoological Illustrations.' 



Species 9. (Mus. Morris.) 

 Mitra papalis. Mitr. testa elongatd, crassissimd, pon- 

 derosd, spird turritd, apice subobtuso ; anfractibus lee- 

 vibus, striis impresso-punctatis, remotiusculis, cinctis. 

 margine superiore plicis den / i form i bus coronato, an- 

 fractiis ultimi striis plus minusve obsoletis ; albd, 

 rubra maculatd ; colume/ld sex-plicald ; apertum 

 fauce lutescente ; labro denticulate- crenato. 

 The papal Mitre. Shell elongated, very thick, pon- 

 derous, spire turreted, apex rather obtuse ; whorls 

 smooth, encircled with rather remote impressly 

 punctured stria?, upper edge coronated with tooth- 

 shaped folds, striae of the last whorl more or les? 

 obsolete ; white, spotted and blotched with deep 

 crimson-red ; columella six-plaited ; interior of the 

 aperture yellowish ; lip denticulately crenated. 

 Lamarck, Anim. sans vert., vol. vii. p. '299. 



Valuta papalis, Linnaeus. 

 Hab. Island of Annaa, Pacific Ocean (found on the coral 

 reefs at low water) ; Cuming. 

 The spots in this well-known species are very nume- 

 rous, often flowing one into the other, and are distin- 

 guished by their deep crimson colour. 



Species 10. (Mus. Cuming.) 

 Mitra tessellata. Mitr. testd prielongo-lurritd, an- 

 fractibus tumidiusculis, transversim profundi sulcatis, 

 liris crebris incequalibus sulcus corrugato-decussanti- 

 hiis. longitudinaliter calatis; lutescente, flammulis cas- 



taneis longiludiiialibus arnatd ; columella sc.c-plicatd ; 

 labro crenato. 

 The chequereu Mitre. Shell very elongately tur- 

 reted, whorls a little swollen, transversely deeply 

 grooved, longitudinally carved with unequal close- 

 set ridges crossing the grooves ; pale yellow, orna- 

 mented with longitudinal chestnut-brown names ; 

 columella six-plaited ; lip crenated. 

 Martyn, Universal Conchology, f. 19. 

 Hab. Island of Annaa, Pacific Ocean (found on the 

 reefs) ; Cuming. 

 In this shell a very characteristic style of sculpture is 

 produced by the close tremulous crossing of the longi- 

 tudinal ribs, which are very irregular, both in their 

 width and comparative distance. 



August 1844. 



