202 W. T. Blanford — Contrihiitions to Indian Malacoloqi/. [No^ 4, 



parietal lamina is double. Some specimens are rather smaller than the 

 type. It is doubtful whether these differences justify a separate name. 



15. Steeptaxis peesonatus, sp. nov., Plate II, Fig. 10. 



" S. personatus, Wl. BI," Theobald, Cat. Land and Freshwater Shells Brit. Ind. 

 p. 33. 



Testa mibilicata, depressa, splicBroideo-ovata, Icevigata, nitidula, diap- 

 Jiana, cereo-albida. Spira depressa, apice vix exserto, suturd impressd. Anfr. 

 6, convexi, peiiultimus postice rotundatus, vix ultra ultimum (a hasi spec- 

 tatus) projiciens ; idiimus eecentricus, antrorsum devians, suhtus convexus, 

 circum umhilicum compressus, post aperturam fossiculis imj^ressis constric- 

 tiis. Apertura ohliqua, fere semiovalis, lamina una validdflexuosd intrante 

 parietali, dentihusque 5, trihus in margine columellari, duohus in dextro, 

 harmn uno inferiore inajore lamince pnrietali opposito, alio minore superiore, 

 coarctata. Peristoma incrassatum continuum, fere solutu7n,alhim,undicpie 

 late expansum, postice juxta anguluin suhprofunde retrosinuatum, margiiie 

 parietali valido, concave. Diam. maj. 5, min. 3f, alt. 2\. 



Hab. In niontibus baud procul ab urbe Cumbum (Madura) Indiae 

 meridionalis {S. Beddome). 



N. B. In nonnullis exeniplis peristoma quadri-vel tridentatwn neo 

 quinquedeiitatum est, dente uno columellari et aliquando uno palatali 

 carens. 



Shell umbllicated, depressed, spheroidally ovate, smooth, moderately 

 polished, translucent, pale yellowish white. Spire depressed, the apex 

 scarcely exserted, suture impressed. Whorls 5, convex, the penultimate 

 rovmded behind, scarcely projecting beyond the last when seen from below ; 

 the last eccentric, convex below, compressed around the umbilicus, and 

 constricted by pits cori'esponding to the teeth inside, just behind the 

 mouth. Aperture oblique, irregularly semioval, and furnished with one 

 strong re-entering parietal lamina, curved inside, and with five teeth, three 

 on the columellar margin, two on the right ; of the latter the lower is larger 

 and opposite to the parietal lamina, the smaller is above, nearer to the 

 angle. Peristome thickened, continuous, almost free (the thick callus which 

 unites the columellar and destral margins projecting from the last whorl, 

 in a hollow curve, the concavity corresponding to the parietal lamina) ; the 

 outer margins expanded, the right margin deeply recurved close to the 

 posterior angle. Major diameter 0'2, minor O'lS, height O'l inch. 



In other specimens, rather worn, and with the peristome somewhat 

 less developed, the teeth are rather smaller, the upper columellar tooth is 

 wanting, and iu one case the upper tooth on the right margin is also de- 



