MITRA. 



Plate XXXVII. 



(Figures moderately magnified.) 



Species 306. (Mus. Metcalfe.) 



Mitra roborea. Mitr. testa /ii/ramidali. xpi rd acuminata ; 

 nigricante-fascd, liris nitidis angustis undique funicu- 

 latd ; columella bijilicatd, /i/icix subiiidix/iuctis ; aper- 

 turd pared. 



The oaken Mitre. Shell pyramidal, spire acuminated ; 

 blackish-brown, corded throughout with narrow white 

 ridges; columella two-plaited, plaits somewhat indis- 

 tinct ; aperture small. 



Reeve, Pro. Zool. Soc, 1815. 



Hab. ? 



An interesting dark brown pyramidal shell, encircled 



throughout with white cord-like ridges. 



Species 307. (Mus. Cuming.) 

 MlTRA SaVIGNYI. Mitr. testa nra/d, teuuicnld, spiree an- 



fractibus for tiler plicato-costatis, anfractu ultimo lavi- 



gato ; luteo- et viridescente-olivaceo, zonula albidd cin- 



ffttlato ; columella' iripliculd. 

 Savigny's Mitre. Shell ovate, rather thin, whorls of 



the spire strongly plicately ribbed, last whorl smooth; 



yellowish and greenish olive, encircled with a small 



white zone; columella three-plaited. 

 Payrandeau, Cat. Moll, de Corse, p. lfiG. pi. 8. f. 22. 

 Hab. Coast of Sicily. 



It seems a curious circumstance in the growth of this 

 shell that its strong plicated structure should be wanting 

 in the last whorl. 



Species 308. (Mus. Cuming.) 

 MlTRA semicostaTA. Mitr. texld orald, xpiivr anf radii, us 

 obtuse plicato-costatis, anfractu ultimo lavigato ; cas- 

 taneo-fuscd, spirit partim alba; columella: quadripli- 

 catd. 

 The half-ribbed Mitre. Shell ovate, whorls of the 

 spire obtusely plicately ribbed, last whorl smooth; 

 ehesnut-brown, spire partially white ; columella four- 

 plaited. 

 Anton ; Kuster, Conch. Cab. pi. I i. f. 20 and 21. 



Hab. ? 



This species approaches very closely to the preceding, 

 although it exhibits a very different style of painting, and 

 merely a faint indication of the little white zone. 



Species 309. (Mus. Cuming.) 

 Mitra radius. Mitr. testa gradli-fudformi, spird acu- 

 minata', bad coul raeld, xubeloinjald ; anfradihux lomji- 

 ludiualiler coiieeu/riee p/ieulo-cox/o/d, iulerxtifiis cuit- 



cellatis; pallida earned, anfractu ultimo fascia fasces- 

 cente basem versus cingulato; columella biplicata. 



The shuttle Mitre. Shell slenderly fusiform, spire 

 acuminated, base contracted, somewhat elongated ; 

 whorls longitudinally concentrically plicately ribbed, 

 interstices cancellated ; pale flesh-colour, last whorl 

 encircled towards the base with a pale brown band: 

 columella two-plaited. 



Reeve, Pro. Zool. Soc, 1845. 



Hab. Island of Corrigidor, Philippines (found in coarse 

 sand at the depth of seven fathoms); Cuming. 

 A light elegant shell in which the ribs are of a peculiarly 



concent rie growth. 



Species 310. (Mus. Cuming.) 

 Mitra glandiformis. Mitr. textd oratd, utrinque at- 

 Iciiuatd, spira suturis profundi impresses ; longitudi- 

 naliter costatd, costis leevibus, interstitiis profundi; cla- 

 tltratix; cinereo-griseo alboque variegatd, bad albican te ; 

 columella quadriplicatd. 

 The acorn-shaped Mithi;. Shell ovate, attenuated at 

 both end-, suturesof the spire deeply impressed; lon- 

 gitudinally ribbed, ribs smooth, interstices deeply 

 latticed; variegated with white and ashy grey, base 

 whitish ; columella four-plaited. 

 Reeve, Pro. Zool. Soc., 1845. 



In most examples of th 

 dominates. 



species the white rather pre- 



Species 311. (Mus. Cuming.) 

 Mitra cinekacea, Mitr. testa pyramidali-ovatd, spira 

 I em! a. taxi xubreeurcd ; anf radii, ux stipend angillatis, 

 longitudinaliter costatis, costis ad unguium subnodons, 

 interstitiis liris parois transoersU caneellatis; cinereo- 

 grised, fascia albidd subinterruptd cingulatd, basi al- 

 bidd ; columella quadriplicatd; aperturd pared. 

 The ashy Mitre. Shell pyramidallj ovate, spire turreted, 

 base a bttle recurved ; whorls angulated at the upper 



March 1845. 



