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Show 44 LIEUT.-COL. H. H. GODWIN-AUSTEN O N [Jan. 6, coloured band and differs in form. I have named it after H.M. frigate ' Meander ' which did much good service in Bornean waters in the early days of Rajah Brooke's occupation. HELIX (CHLORITIS) PLENA, n. sp. (Plate II. fig. 8.) Shell depressedly globose, openly umbilicated ; umbilical margin hollow, subangular; sculpture finely granulate, covered with a strong epidermis; colour pale umber-brown, with a faint indication of a peripheral band ; spire low ; apex flat, slightly raised above the body-whorl; suture shallow ; whorls nearly 5, gradually increasing ; aperture oval, nearly vertical; peristome milky white, reflected ; columellar margin suboblique. Size of specimen drawn : maj. diam. 18*8, min. 15*5; alt. axis 8*5 millim. Largest specimen: maj. diam. 190, min. 16*0; alt. axis 8*9 millim. Hab. Labuan (Sir H. Low, in coll. Dr. Hungerford). There were five examples of this shell in the collection. Helix (Camena) germana. Helix germana, Reeve, Conch. Icon.pl. lxxiv. fig. 385 (1852), =H. orientalis, Adams & Reeve (non Gray), Zool. Voy. Samarang, Moll. p. 61, pi. xvi. fig. 4 (1850). This is evidently not Bornean. Helix (Papuina) antiqua. Helix antiqua, Adams & Reeve, Zool. Voy. Samarang, Moll. p. 61, pi. xiv. fig. 1 (1850). HELIX (GEOTROCHUS) NIAHENSIS, n. sp. (Plate II. fig. 3.) Shell dextral, pyramidal, thin texture, base flat ; sculpture, spiral lirse, fine, regular, not of continuous thickness, crossed by lines of growth : colour white, with some fine marbling in a greyer colour within the aperture, porcellaneous white ; spire high, pyramidal, sides slightly concave ; apex acuminate ; suture fine, linear ; whorls 7, very flat; aperture ovate, wide and ample, oblique ; peristome sharp, coming to an angulate form at the outer keeled margin, expanded 'and thickened below towards the columellar side. Size: maj. diam. 18*8, min. 16*0; alt. axis 12*3 millim. Hab. Niah Hills (A. Everett). Only one specimen of this delicately formed and gracefully shaped shell was in the collection. HELIX (GEOTROCHUS) TIGAENSIS, n. sp. (Plate II. fig. 5.) Shell pyramidal, rounded below, narrowly umbilicated ; sculpture, irregular transverse lines of growth, indistinct concentric striation on base; colour very pale ochre throughout; spire pyramidal, sides flat; apex blunt ; suture linear; whorls 6, very flat: aperture semi- |