HELIX- AMPELITA. 39 



H. CAMPBELLIANA Pilsbry. PI. 63, figs. 41, 42, 43. 



Shell depressed, umbilicate, solid, opaque, light chestnut-brown in 

 color, with a whitish zone encircling the umbilicus. Surface some- 

 what shining, slightly striate obliquely, and showing under a lens, 

 traces of close microscopic spiral lines ; the latter three-fourths of 

 the last whorl is conspicuously malleated above and below the pe- 

 riphery. Spire low, convex ; whorls 4i-5, convex, the inner slow- 

 ly, the last two rapidly widening ; sutures well impressed ; last whorl 

 depressed, almost rounded at the periphery, but with a slight keel or 

 angulation ; convex above and below, abruptly and deeply cleflexed in 

 front. Aperture oval, subhorizontal, flesh-colored within ; peristome 

 narrowly expanded, basal margin narrowly reflexed, upper lip scarce- 

 ly expanded ; terminations of the lip much converging, connected 

 by a thin, transparent callus ; there is a small, triangular white 

 callus within the upper termination of the peristome. The umbilicus 

 is deep, funnel-shaped, showing the whorls to the apex. 



Alt. 21, greater diam. 46, lesser 39 mill. ; aperture, oblique alt. 

 21, breadth 26 mill.; measured outside the peristome. 



Alt. 21, greater diam. 50, lesser 41 mill. ; aperture, oblique alt. 



23, breadth 27 mill. 



Madagascar. 



An exceptionally well-marked form. The whorls are convex, not 

 grooved above or below ; the aperture is oval ; peristome narrowly 

 expanded, reflexed below. The color is a rich light chestnut brown. 

 It is probably allied to H. clotho Fer., but does not have the strong 

 parietal callus of that form, and is very conspicuously malleated on 

 the last whorl. The umbilicus is obliquely dilated behind the col- 

 umellar lip, and obscurely grooved. The two specimens before me 

 agree in all respects, except that one has a slightly greater diameter. 



The species is named in honor of Mr. John H. Campbell of Phil- 

 adelphia. 



H. LANCIFORMIS Boettger. 



Shell broadly umbilicated, umbilicus perspective, & to g the 

 diameter of the shell ; depressed, not at all carinated, scarcely sub- 

 angulated, at the place of the carina it is encircled by an obsolete 

 thread ; chestnut under olivaceous epidermis, base with a yellow or 

 white band around the umbilicus ; spire slightly convexly raised, 

 apex plane; whorls 4i-5, slightly convex, separated by lightly 

 impressed sutures, very minutely granulate, transversely striatulate, 

 and with a broad tract at the periphery obliquely wrinkled or 



