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Show 1890.] GENERA STREPTAXIS AND ENNEA. 760 Hub. ad Moulmeiu (Theobald). This is allied to E. cylindrelloidea Stol. and to E. seatoni Bedd. (P. Z. S. 1891, p. 315), and intermediate in size between them ; it is distinguished from the smaller E. cylindrelloidea by coarser and more distant sculpture, and by the free part of the last whorl near the aperture being rather shorter. From the larger E. seatoni the present species may be known by ifs differently shaped mouth, which, as in E. cylindrelloidea, is nearly as high as broad, and by the absence, so far as can be determined in the only specimen available for examination, of tbe internal columellar plait. The parietal lamella is almost vertical in front, but the crest of it, inside the whorl, is bent towards the centre of the aperture, as in E. cylindrelloidea *. The type of E. brevicollis is a single specimen in the British Museum collection, labelled Damotha, Moulmein. This shell was obtained with others from Mr. Theobald in 1888, and has hitherto been supposed to be E. cylindrelloidea, of which there is no specimen in the collection. Whether the locality Damotha is correct it is impossible to say : probably E. cglindrelloidea and E. brevicollis are representative forms, found on different isolated limestone hills. A single specimen of another Ennea belonging to the same group with the last whorl solute near the aperture has been presented to the British Museum by Dr. Hungerford and is also said to be from Damotha, Moulmein. It approaches G. cglindrelloidea, but is still smaller, being only 4 m m . long. It has 8 whorls and is smooth, not costulate. This is probably an undescribed species, but the only specimen looks slightly distorted, so I shall not propose a name for it. ENNEA NAGAENSIS G.-A. MS. (Plate L. fig. 22.) Testa longe curvato-rimata, cglindnco-ovata, oblique confertim flexuoso-costulata, cereo-albida, apice convexo, obtuso, sutura impressa ; anfr. 7, convexiusculi, ultimus minor, compressus, basi angustior ; apertura auriformis, subaxialis, sinu sub-rotundo dextrali, a plicis duabus validis intrantibus proximis, und parietali, altera palatali in margine dextro, fere abscisso peristoma albidum, undique incrassato-dilatatum, marginibus callo crasso longe ascendente junctis. Long. 4|, diam. 2 ; ap. lorn/. ll| mm. (perist. incl.). Hab. in montibus Naga dictis (Godwin-Austen). This shell is allied to E. vara Bs. and E. stenopylis Bs., the aperture, with its broadly expanded peristome and the subcircular sinus to the right almost cut off by the parietal and palatal plaits, 1 I have been able, since the above was written, through the kindness of Dr. Alcork, Superintendent of the Indian Museum, Calcutta, to examine the tvpe of E. cylindrelloidea. The parietal lamella is not curved into a hook, as might be supposed from the figure, J. A. S. P>. 1871, pt. 2, p. 171, pl. 7. f. 4, and the copy of the same in the ' Conchologia Indica; The hook-like appearance is due to the shadii g in the lithograph; intended to represent the curvature of tlie lamella inside the aperture, having been printed too darkly. |