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Show 1870.] MR. G. B. SOWERBY ON NEW SHELLS. 259 to be unique; but it differs materially in form, the spire being much longer than the body-whorl. It also has longitudinal ridges, and is much more neatly and regularly marked. MITRA INTERSTRIATA. M . testa fusif ormi, acuminata, costis distantibus Icevigatis longitudinalibus et striis spiralibus interstitialibus sculpta, albida; anfractu ultimo in medio aureo latifasciata, supra et infra fasciam inter costas rubro maculato. Hab. China Seas. Mus. Taylor. MITRA DIMIDIATA. M . testa brevi, liris distantibus, Icevigatis, rotundis, longitudinalibus, et striis elevatis spiralibus interstitialibus sculpta; spira ultimo usque ad medium albis, infra aurantiacis. Hab. ? Mus. Taylor. MITRA UMBONATA. M . testa brevissima; spira anfractum ultimum longitudine eequante, alba, turrita; anfractibus supra medium angulatis, costis acute bituberculatis armatis; anfractu ultimo ad medium rubro late cingulata, costis paucis supra acute bituberculatis infra crenulatis et supra canalem costa spirali tuberculata armato. Hab. ? Mus. Taylor. DESCRIPTION OF THE PLATES. PLATE XXI. Fig. 1 a, b. Typhis duplicatus, Sowb., p. 251. 2. Eburna perforata, Sowb., p. 252. 3. Turritella excavata, Sowb., p. 252. 4. Strombus mirabilis, Sowb., p. 257. 5. Solenella subcrqualis, Sowb., p. 250. PLATE XXII. Fig. 1. Conus planiliratus, Sowb., p. 255. 2. mitrceformis, Brug., var. pupcefurmis, Sowb., p. 256. 3. laterculatus, Sowb., p. 255. 4. rarimaculatus, Sowb., p. 257. 5. sowerbyi, Rve., var. subcequalis, p. 257. 6. submarginatus, Sowb., p. 255. 7. corrugatus, Sowb., p. 257. 8. gemmulatus, Sowb., p. 257. 9. suffusus, Sowb., p. 255. 10. tenuisulcatus, Sowb., p. 256. H. floridensis, Sowb., p. 256. 12. tegulatus, Sowb., p. 256. 13. semisulcatus, Sowb., p 257. 14. turritus, Sowb., p. 256. |