. Mollusca ... Mollusks. SUCCINEA. 455 S. crassiuscula, ; It certainly approaches that species in several respects, but the last whorl does not increase so rapidly and the spire is more produced. Several specimens from Bombay measure 13-5 mm. in diameter thus exceeding the type which is in the Cuming collection. Three shells from Calcutta in the Theobald collection also have a diameter of 13 mm. On the other hand three specimens in the British Museum collected in 1880 by Col. Wilmer on brickwork at Port "William, Andaman Islands, which I refer to this species, do not exceed 9
. Mollusca ... Mollusks. SUCCINEA. 455 S. crassiuscula, ; It certainly approaches that species in several respects, but the last whorl does not increase so rapidly and the spire is more produced. Several specimens from Bombay measure 13-5 mm. in diameter thus exceeding the type which is in the Cuming collection. Three shells from Calcutta in the Theobald collection also have a diameter of 13 mm. On the other hand three specimens in the British Museum collected in 1880 by Col. Wilmer on brickwork at Port "William, Andaman Islands, which I refer to this species, do not exceed 9 mm. and a still smaller form, collected by him at Fort William, Calcutta, only measure 6-5 mm. The shells collected by the Stanley G-ardiner Expedition, in the Mai dive group— which are also in the British Museum—belong to a rather slender form, pale greenish corneous, and almost transparent. 453. Succinea hanleyi, sp. n. Sticcinea subc/ranosa, Hanley & Theobald, Conch. Jnd. 1876, pi. 158, flg. 9 (nonPfeiffer). Shell imperforate, elongate-conoid, finely and closely, somewhat irregularly, plicate-striate, pale amber coloured. Spire elongate, apex minutely papillate, suture moderately deep. Whorls 3j, rather tumid, the last about -f- of the total length of the shell. Aperture oblique, obovate, the margins slightly thickened, colu- mellar margin shortly reflexed, with a slight elongate tubercle at the junction with the basal margin. Long. 7, diam. 4, alt. 3-5 mm.; apert. 4 mm. long, 3 mm. Fig. 141.—Succinea hanleyi. Hob. India: Calcutta. Type in the British Museum. The British Museum contains four specimens from Calcutta labelled Succinea subgranosa, but which differ from that species by the more slender spire and in being of a pale amber colour. The new species has also some relationship with S. bensoni, but the aperture is less high in proportion to the spire. One of the specimens has 3J whorls completed and measures nearly 8 mm. in length. The shell figured in
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