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Show 496 MR. E. A. SMITH ON LAND-SHELLS [May 7, or three of the preceding volutions. The umbilicus is very deep and penetrable to the apex of the shell, but rather narrow, occupying about one seventh of the smallest diameter. The peristome rather broadly expanded and white, with the exception of the columellar and basal margins, which are stained with a dirty pinkish colour. Over the umbilicus it is broadly expanded, reflexed, and joined to the upper margin by a thin callosity. This species is quite distinct from H. myomphala, Martens, and, al- Fig. 1. Helix (Camena) lewisii. though agreeing in the style of coloration, differs in form and the umbilicus. The single example in the British Museum was presented by Mr. George Lewis. HELIX (CAMENA) CONGENITA. Testa suborbicularis; spira breviter conica, subaperte umbilicata, tenuiuscula, pallide straminea, zona lata interrupta irregulari fusca, vel strigis lads fuscis infra medium anfr. ultimi ornata et hie illic supra strigis obliquis paucis indistinctis notata, interdum peripheriam zona angusta fusca cincta, et umbilico aliquando fusco tincto; anfractus 5|-6, convexiusculi, lineis incrementi elevatis, filiformibus, obliquis, fiexuosis et striis minutissimis spiralibus inter lineas elevatas sculpti, ultimus angustiusculus, antice prope labrum breviter subitoque descendens; apertura subhorizontalis, intus livida, fusco tincta; peristoma tenue, livido-fusco et albo diverse pictum, undique refiexum et expansum. Diam. max. 30 mill., min. 25, alt. 19; apert. 16| long., 14 lat. Hab. Japan. This species partakes in a great measure of the form of H. congener, recently described by me in these 'Proceedings' (1878, p. 105). The spire, however, is a little more elevated, the last whorl a trifle less robust, and the aperture narrower. The sculpture of this species is much coarser, the lines of growth being developed into thread-like lirae, and the spiral striae invisible to the naked eye, and more conspicuous between than upon the |