220 



GIBBULA. 



cariiiated, but old ones have the last whorl rounded, wide and very 

 convex. The columella has a somewhat reflexed margin, which is 

 a trifle widened above, slightly covering the umbilicus ; it passes 

 imperceptii-)ly into the outer lip, and is united above with the latter 

 by a very thin white callus. The umbilicus is deep, narrow, longi- 

 tudinally very finely striated. The color is various ; eitlier rose-red 

 or orange-yellow, with traces of clear spots at the suture, or else 

 purple-red with white flecks. (Kranss). 



T. benzi Krauss, Die Siidaf. Moll. p. 99, t. 5, f. 32.— Philippt, 

 Conchyl. Cab. p. 320, t. 46, f. 1. 



Known to me only by the description (translated above) of 

 Krauss, and his figures (pi. 51, figs. 13, 14), and by Philippi's des- 

 cription and figures of a shell identified by him with this species. 

 Of this form Philippi says : 



The shell is pretty thin, conoidal, and consists of 5 whorls which 

 are regularly moderately convex ; the last shows an indication of 

 an angle. The sculpture consists of slightly elevated rather narrow 

 transverse lirse, of which I count 4 on the penultimate, about 6 

 above the periphery of the last whorl, with here and there an inter- 

 mediate smaller one, and upon the base 10 less elevated ones. The 

 interstices look pitted on account of the elevated incremental strise 

 that cross them. The umbilicus is very narrow, but perforates to 

 the apex, is widened, funnel-shaped at the opening, and is bounded 

 by an obtuse but distinct keel. The color is rose-red with dark red 

 dots. The above-described examples from the Menke collection differ 

 from Krauss' description in color, for his species is said to be purple 

 or orange-red with white flecks ; furthermore, the umbilicus, Krauss 

 says, is striate, which is not the case in the specimens before me, 

 which are also more narrowly umbilicated than his figures. 



G. scAMNATA Fischer. PI. 30, fig. 6. 



Shell small, subperforate, conoidal, unicolored cinereo-olivaceous, 

 with spiral blackish bands ; whorls 6, somewhat convex, with 5 to 6 

 spiral elevated lira3 on the penultimate whorl ; last whorl sub- 

 angulate, base convex with 7 to 8 concentric lirje, the interstices 

 narrow ; aperture subrhomboidal, sulcate within ; columella arcuate^ 

 a little reflexed and almost covering the umbilicus. 



Alt. 7, diam. 7] mill. (Fischer.) 



Ocecmica. 



