PEESTON : OX MOLLUSCA FROM ASSAM. 21 



broad, zio;zag flame-markings of dark chestnut, and with a broad, 

 spiral band, or group of bands, on the base immediately below the 

 peripheral keel ; whorls 5, rapidlj- increasing, sculptured above with 

 tine, closely set, spiral riblets, some of which coarsen into lirse below, 

 crossed by vei'y oblique, closely set, transverse strias, which give the 

 shell, especially on tlie upper half of the whorls, a finely granular 

 appearance ; base of sliell sculptured with fine, wavy, revolving striae 

 and moderately fine lirse, which become obsolete in the umbilical 



area ; suture well impressed, incised, and slightly overhung below ; 

 umbilicus somewhat wide, deep ; columella descending in a curve, 

 a very thick, polished, transparent callus uniting it with the lip 

 above, just behind its junction witli tlie parietal wall ; labrum white, 

 thickened, laminiferous, rather narrowly expanded and reflexed ; 

 aperture sub-circular; interior of shell whitish, smooth, polished, 

 showing the spiral lirse and dark, sub-peripheral bands through the 

 test; operculum slightly concave, laminiferous, with central nucleus, 

 liaving 7-8 whorls. Alt. 35-5, diam. maj. 42, min. 32-5 mm. 

 Aperture : alt. 19 5, diam. 20 mm. 

 ^«*.— Naga Hills. 



CrCLOPHORUS BEDDOMEANUS, U.Sp. 



Shell large, turbinate, with rather acute apex, thin, yellowish, 

 with one broad, super-peripheral, blackish-brown band and a broad 

 sub-peripheral band, immediately below which are two narrow bands 

 of the same colour on tlie lastwliorl, the earlier whorls being reddish- 

 brown, mottled with yellowish -grey ; whorls 5, the last two rapidly 

 increasing, sculptured with irregular lines of growth, crossed by 

 rather broad, but flat, spiral ridges, the last whorl carinate at the 

 periphery ; suture incised, narrowly margined above ; umbilicus 

 moderately broad, deep ; labrum continuous, somewhat thickened, 

 but not reflexed, ci'imson ; aperture large, sub-circular ; interior of 

 shell glossy, smooth, polished, bluish, the colour-bands being visible 

 through the test; operculum laminiferous, with central nucleus, 



