OCR Text |
Show 258 MR.-E. A. SMITH ON THE [Apr. 1, thick, produced into acute nodules at the points of intersection, the quadrate interstices are very deeply pitted. PLEUROTOMA (CLATHURELLA?) MULTIGRANOSA. (Plate XXI. fig. 6.) Testa parva, fusiformi-ovata, nigrescens vel rufescens, supra medium anfractuum albo zonctta, undique granulis albis et nigres-centibus aut rufis ornata ; anfractus 5^, nucleares 1^ Iceves, cornei, superne concavi, carinati, cceteri planiusculi, costis lirisque spiralibus supra costas granosis instructi ; lirce in superioribus tres, supremct minima, in ultimo 13-14 ; apertura angusta, longit. totius \ subcequans ; columella rectiuscula, medio tuberculis minutis cluobus instructa, callo tenui indutaj labrum vix incrassatum, superne brevissime sed distincte sinu-atum. Longit. 4^ millim., diam. 2. This species is larger than Pt. commutabilis, differently coloured, and more closely sculptured. The costae and lirae are so near together that the granules almost touch one another. PLEUROTOMA (CLATHURELLA?) USTA. (Plate XXIII. fig. 4.) Testa minuta, fusiformi-ovata, nigricans vel rufescens, interdum serie granulorum albidorum paulo infra suturam ornata ; anfract. 5, primi 1| Icevigati, cceteri leviter convexiusculi, 12-14 paulo obliquis instructi, sulcisque angustis transversis anfr. superioribus 4, in ultimo circiter 15) sculpti; apertura elongata, angusta, dimidium longit. totius vix cequans; columella leviter obliqua, callo tenui induta, in medio interdum indi-stincte incisa; labrum probabiliter leviter incrassatum, superne vix sinuatum. Longit. 2 | millim., diam. 1-j. The sulci cut through the costae and produce a somewhat granular appearance. The lira beneath the first sulcus below the suture is that which is white upon the riblets in the black variety. MUREX (CHICOREUS) ADUSTUS, Lamarck. Hab. "West Indies, Japan, Philippines, Indian and Pacific Oceans. In the 'Annals and Magazine of Natural History,' 1875, vol. xv. p. 419, I expressed an opinion that Murex despectus of A. Adams, said to have come from the West Indies, was identical with this species, which is known as an inhabitant of Eastern seas. At the time I doubted the accuracy of the locality given by Adams, but now I am inclined to nelieve it correct, as so many West-Indian shells have also been found on the eastern side of the Atlantic at St. Helena, Ascension Island, and on the west coast of Africa. MUREX (OCINEBRA) SANCT-E-HELEN^;. (Plate XXIII. fig. 5.) Testa fusiformis, alba, varicibus tribus obliquis, compressis, dentatis, et liris spiralibus (in anfract. superioribus cluobus, in ultimo |