| OCR Text |
Show 312 MR. E. A. SMITH ON THE [Apr. 1, liris cluobus elevatis fissuram contingentibus superne instructus apertura irregulariter rotundata ; peristoma tenue, continuum. Diam. maj. 1-f millim. There are two specimens of this very minute shell. The larger has the slit almost closed at the peristome, which is otherwise continuous, so that it is likely, if it had lived a short time longer, it would have been quite closed, and then would have become a form of Schismope. In his report on the Gasteropoda of the ' Challenger' Expedition, p. 119, M r. Watson has described as Schismope carinata the same species as that published by A. Adams (Ann. Mag. Nat. Hist. 1862, vol. x. p. 346) under the name of Scissurella carinata. FISSURELLA MUTABILIS, Sowerby. Hab. South Africa, at the Cape. PATELLA UMBELLA, Gmelin. Hab. South Africa, Cape of Good Hope. PATELLA RUSTICA, Linn. Hab. South Africa, Cape of Good Hope. PATELLA OCULUS, Born. Hab. Cape of Good Hope. PATELLA COMPRESSA, Linne. The two specimens from St. Helena are of an unusual bright red colour, and the interior, excepting the muscular scar and the part it encloses, is of the same bright colour. They are in an excellent state of preservation, exhibiting on and between the fine radiating lirae very pretty close-set concentric wavy striae. Although found on the beach by Capt. Turton, these specimens have doubtless been transported from the Cape of Good Hope to St. Helena upon floating seaweed, upon the stems of which it is said to attach itself. CYLICHNA REMISSA. (Plate XXIV. fig. 20.) Testa parva, tenuis, albida, superne anguste perforata, striis spiralibus et longitudinalibus minute decussata ; anfr. ultimus lateribus rectiusculis, inferne paulo latior quam supra; apertura supra angusta, infra medium leviter dilatata; columella obliqua, subrecta, leviter refiexa. Longit. 2\ millim., diam. 1-j. This species has much resemblance to Utriculus complanatus, Watson, in form. It is, however, a little narrower at the upper part, and the aperture is produced higher above the spire. The reticulate sculpture can only be seen under a compound microscope. |
