Zoological Society. 265 
Conch. Icon., Mitra, pl. 33. f. 274. 
Hab. Islands of Ticao and Philippines (found under stones at low 
water) ; Cuming. 
A pretty species, banded alternately with white and ashy grey. 
Mirra purpurata. Mitr. testd ovatd, utrinque attenuatd, spird 
breviusculd, subturritd ; anfractibus ad suturas plano-angulatis, 
longitudinalter costatis, costis numerosis, angustis, prominentibus, 
interstitiis impresso-cancellatis ; fusco-purpured, zond angustd 
albd cingulatd ; columella quadriplicatd. 
Conch. Icon., Mitra, pl. 33. f. 275. 
Hab. Island of Capul, Philippines (found under stones at low 
water) ; Cuming. 
The whorls of this shell being flatly angulated at the sutures, give 
a turreted character to the spire. 
Mirra purtita. Mitr. testd rotundato-ovatd, spird brevi, subob- 
tusd, suturis impressis ; anfractibus transversim subtilissim? stri- 
atis, anfractis ultimi parte inferiori minut? nodiferd ; aterrimd, 
anfractuum parte superiori maculis niveis pyriformibus, concentrice 
dispositis, conspicue ornatd ; columelld triplicatd ; labro intus den- 
ticulato. 
Conch. Icon., Mitra, pl. 34. f. 276. 
Hab. Island of St. Thomas, West Indies ; Gruner. 
The pyriform white spots which encircle the upper portion of each 
whorl exhibit a striking contrast with the jet-black ground of the 
shell. 
Mirra Gratiosa. Mitr. testd elongatd, subcylindraced, liris pro- 
minentibus minutis creberrime decussatd ; fuscd; columella quinque- 
plicatd, labro subincrassato. 
Conch. Icon., Mitra, pl. 34. f. 277. 
Hab. Gallapagos Islands (found among coral sand at a depth of 
about seven fathoms) ; Cuming. 
A narrow cylindrical shell, with beautifully decussated sculpture, 
and of an uniform brown colour. 
Mirra miririca. Mitr. testd elongatd, gracili, subcylindraced, 
basi recurvd, liris minutissimis creberrime decussatd ; rosaced, 
subpellucidd, zonuld angusta albidd cingulatd ; columella sexplicatd, 
labro subincrassato. 
Conch. Icon., Mitra, pl. 34. f. 278. 
Hab. Island of Capul, Philippines (found under stones at low 
water) ; Cuming. 
The general aspect of this shell is very similar to that of the pre- 
ceding species; upon examination it will be found however of a 
thinner and more slender structure, whilst the sculpture is of a 
smaller pattern, and the colour altogether different. 
Mirra 1neRMIs. Mitr. testd oblongo-ovatd, longitudinaliter cre- 
berrimé plicatd, basi sulcatd ; rufescente-fuscd, fascid albidd, fusco 
subtilissime undulata, cinetd ; columella quadriplicatd. 
Conch. Icon., Mitra, pl. 34. f. 279. 
Ann. & Mag. N. Hist. Vol. xvi. U 
