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Show 488 MR. G. B. SOWERBY ON [May 16, broad channel in the wing-like expansion of the lip. The longitudinal ribs are nearly white, between which the brown colouring is partly disposed in transverse linear streaks. PLEUROTOMA ALBOVARICOSA, n. sp. (Plate XXXVIII. figs. 9,10.) Testa elongato-fusiformis, glabra, fusca, albo interruption strigata spira elongata, turrita, acutissima ; anfractus 8, convexi, costati, costis rotundatis, albidis, zona fusca sutura callosa, cdbida; anfractus ultimus elongatus, costis 6 munitus, fusco bifasciatus, infra medium constrictus, spiraliter striatus, longirostratus; apertura elongata ; columella fere recta ; labrum tenue, superne mediocriter sinuatum, canali longiusculo. Long. 22, maj. diam. 6 millim. Hah. East Africa ? (ex coll. Keen). A prettily painted shell, with a smooth shining surface. The ribs are whitish, crossed on the upper whorls with one and on the body-whorl with two brown zones ; the interstices between the ribs are entirely brown. The suture is covered with a whitish callosity. It may be doubted whether this species is rightly placed in the section or subgenus Surcula, but to judge only from the shell, and to propose a new section for it, would be only to add to the already far too numerous ill-defined subdivisions. PLEUROTOMA EDITH^E, n. sp. (Plate XXXVIII. figs. 3, 4.) Testa subfusiformis, sordide albida, fusco zonata ; spira elongata, acuta; anfractus 10, loevigati, superne leviter concavi, angulati, infra angulum costati, costis elevatis, obtusis, ; sutura callosa ; anfractus ultimus zona lata fusca cinctus, supra medium obtuse angulatus, supra angulum concavus, infra leviter convexus, basin versus attenuatus, spiraliter obscure liratus ; apertura oblonga, fauce fusco-tincta ; labrum acutum, superne angulatum, ad angulum late et profunde sinuatum; columella arcuata, supra callosa, canali brevissimo. Long. 18, maj. diam. 7 millim. Hab. Hong Kong. A shell of simple character. I place it provisionally, but with some doubt, in the section Clavus, which may or may not prove to be clearly separable from Brillia. PLEUROTOMA INCLINATA, n. sp. (Plates XXXVIII. figs. 25,26.) Testa subfusiformis, solidiuscula, luteo-albida fusco-strigata balteata; spira elongata turrita, acuta, leviter inclinata; 10, convexiusculi, costis numerosis acutiusculis leviter obliquis muniti, spiraliter minutissime striati ; anfractus spiram vix cequans, superne leviter concavus deinde convexus, prope marginem costa crassa instructus, ad basim attenuatus |