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Show 254 LIEUT.-COL. H. H. G O D W I N - A U S T E N O N [Feb. 1, inferior figure represents a shell with a high spire, not nearly globular : it is certainly not to be identified with Sowerby's figure in the Thes. Conch, pi. xxvi. OTOPOMA COMPLANATUM, n. sp. (Plate XXVII. figs. 3, 3 a.) Shell turbinate, openly umbilicated, fine spiral ribbing crossed by transverse finer ribbing, smooth on base; colour white; spire pyramidal, 1± whorl at the apex smooth; suture impressed; whorls 5, sides well rounded; aperture ovate, suboblique, angular above; peristome continuous, thickened and scarcelyj| the outer margin, which is well rounded ; columella*- to axis, thin, with a well-marked submedian a*v umbilicus, but with no tendency to an expar*'^^ Size:- Major diam. 36*8, minor diam. 2M [" Very common on the limestor locality, and common on the land all the land in this region is eley stone." (I. B. B.)] Somewhat like Cyclostom pi. xxvi. figs. 110-112, in f< OTOPOMA CLATHRATUL figs. 4, 4 a.) Shell very globosely tu on the apical whorls cr smoother on the body-wh white, also pale purple, st in one specimen numerous ing darkish above the per impressed; whorls 4, w angulate above; periston! penultimate whorl, not p columellar margin subobl slight tendency to angulati peristome, paucispiral, of subcentral, flat in front. Size :-- Major diam. 28*5, mi ,, 122, [" Very common everyw This species is very close! in Conch, Icon. pi. xviii. fig do we find the columeilar ma drawing; and I have examine fig. 116 a is that of a well ba« coloured. Both Arabia and Soa species; but there is some doubt mens are to be assigned to, as th |