| OCR Text |
Show 114 COL. R. H. BEDDOME ON NEW [Mar. 5, swollen, the latter much the largest; sculpture on the antepenultimate a distant but rather fine costulation, on the whorl above much closer, on the penultimate very fine, close, and inconspicuous, on the last whorl rather distant but fine; last whorl not ascending much on to the penultimate; a constriction on the penultimate above the columellar margin : peristome very thick, about 3 breadth of shell, not dilated at its outer margin; inner portion of lip not expanded, shining, yellowish, continuous round apex of aperture, where it is striated : aperture vertical, circular ; no tooth. Length 3 millim. Hab. Koror. 7. DIPLOMMATINA GIBBONI, sp. nov. (Plate XII. figs.7,7a, 7b.) Shell sinistral, gibboso-ovate, not rimate, white or pale yellowish, with a few dark blotches, rather thin, semitransparent: whorls 7, penultimate very much the largest and most swollen ; sculpture a fine, close, regular, oblique striation across all the whorls ; last whorl not ascending much on to the penultimate, furnished with an inconspicuous blunt fold a little behind the peristome, a slight constriction on the penultimate whorl, above the columellar margin : peristome thin, single, not continuous round the apex of aperture (the striations of the penultimate whorl running right into the orifice), dilated inside only at the columellar margin, where it is furnished with a small papilla-like tooth, below which there is a lunate lamella-like process running back into the shell to the opposite wall beyond the peristome ; aperture subauriculate. Length 2 | millim. Hab. Koror. 8. DIPLOMMATINA PATULA, Semper. (Plate XII. figs. 8, Sa.) Shell sinistral, oblong, conical, slightly rimate, moderately thick, reddish brown: whorls 6^-7 ; sculpture on the upper whorls a fine close, oblique striation, rather finer on the penultimate, particularly on the side above the aperture ; on the last whorl coarse, distant, and lamella-like, except just behind the outer peristome, where it is finer and close ; last whorl not ascending much on to the penultimate ; the constriction on the penultimate indistinct, over centre of aperture: peristome moderately thick, not ^ breadth of shell, gradually dilated outwards, the outer margin prominently winged, the interspace finely costulate; the inner lip continuous and faintly striated above the aperture : aperture subcircular, no tooth ; within shining orange-coloured. Length 5| millim. Hab. Koror. I at first thought this species undescribed, the lamella-like costula-tions of the last whorl are so unlike those in the figure of Palaina patula in M . Crosse's Journal, xiv. p. 349, pi. x. fig. 3 (1866); there, however, being a general resemblance in size, shape, and colour, I suspected some mistake of the artist of Semper's species, so I sent a specimen to M . Crosse, who has kindly compared it with his type specimen and identified it, the artist having incorrectly represented the last whorl in his plate. The species appears to be c o m m o n in Koror, as many examples were collected; in some specimens the continuation of the |
