. Mollusca ... Mollusks. PLECTOPXLIS. ]33 pale chestnut streaks crossing the whorls, transversely and sinuously striated with decussating spiral lines above and below ; epidermis thin, horny. Apex minutely granulate or sub-granulate, almost imperceptibly raised above the flat spire; suture not impressed, very narrowly marginate. Whorls 6, narrow and closely wound, flat above ; the last angulate above the periphery, rounded beneath, descending close to the mouth, very slightly compressed behind the same. Umbilicus very shallow, exposing all the whorls, aperture diagonal, truncately subcircular;
. Mollusca ... Mollusks. PLECTOPXLIS. ]33 pale chestnut streaks crossing the whorls, transversely and sinuously striated with decussating spiral lines above and below ; epidermis thin, horny. Apex minutely granulate or sub-granulate, almost imperceptibly raised above the flat spire; suture not impressed, very narrowly marginate. Whorls 6, narrow and closely wound, flat above ; the last angulate above the periphery, rounded beneath, descending close to the mouth, very slightly compressed behind the same. Umbilicus very shallow, exposing all the whorls, aperture diagonal, truncately subcircular; peristome white, reflexed throughout, margins joined by a raised bar, from the centre of which a lamina passes up the parietal side of the whorl to the plication, which hes at about | the circumference of the whorl from the mouth, and resembles that of Helix achatina, Gray; the parietal transverse lamina being simple and oblique above, then bifurcating, giving ofi the lamina which runs to the mouth, and two short basal supports. A thread-like lamina also runs along the extreme base of the parietal side of the whorl, and joins the aperture. Palatal teeth 5, the upper 3 and the lowest longitudinal, the uppermost very long and thin, the 4th vertical, corresponding to the fork in the parietal lamina. " Major diam. 13-18, minor 11-15 mm.; axis 4-5 ; {Blanford.) Hah. Burma : Banks of Tsanda Khyoung, near Kaintha village, and Banks of Nungatho Khyoung, Henzada district, Pegu {Blanford) ; Myanoung, Arakan Hills (Blanford). The parietal armature consists of a long horizontal fold, united to the ridge at the aperture, and proceeding parallel with the last. Fig. 66.—Vlectopylis karmorum. whorl for a quarter of its length, at which point it gives off a shortly descending arm; it then rises obliquely for a short distance and finally bifurcates, the lower arm of the bifurcation being the longer, and obliquely descending, while the upper arm is slightly curved backwards ; the
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Keywords: ., bookauthorg, bookcentury1900, bookdecade1900, booksubjectmollusks
