30 HELIX-AMPELITA. 



H. CONSANGUINEA Ferussac. PI. 6, figs. 81, 82. 



Shell orbiculate-depressed, smooth, brownish-white, two-zoned 

 with brown above ; whorls 5, slightly convex, closely coiled, the 

 last whorl umbilicate ; umbilicus blackish-brown inside ; aperture 

 oblique, transverse-ovate ; lip reflexed, pale reddish-brown. 



Alt. 15, diam, 28 mill. (Desk.) 



The shell is orbicular-depressed, 5-whorled. Spire subconoid, 

 obtuse at summit. Earlier whorls whitish, little convex, closely 

 joining; it seems that the young are carinated or angular. The 

 suture is superficial on the earlier whorls, impressed on the last two 

 whorls. The last whorl is regularly convex at the circumference, 

 cylindrical, a little depressed below, perforated by a funnel-shaped 

 umbilicus bounded by an obtuse angle. The greater diameter of 

 the umbilicus is a trifle more than a third that of the last whorl. 

 The shell is smooth, with slightly growth lines. Aperture oval- 

 transverse, wider than high ; it is deflexed, the upper lip inflexed 

 below the periphery, the lower lip prolonged a little above the 

 umbilicus. The extremities of the lip are separated by a little less 

 than half the circumference of the penultimate whorl. The plane 

 of the aperture is inclined about 30 degrees to the vertical axis. 

 Right margin quite thick, strongly reflexed at the base, a little 

 reflexed above ; the edge is chestnut brown, more or less dark in 

 different individuals. The coloration seems to be pretty uniform ; 

 on a brownish or reddish-black ground there are two deep brown 

 zones above, very distinct, equal ; the first at the suture, the second 

 above the circumference. Umbilicus brown inside, bounded by a 



white zone. (Desk.) 



Near Say of Diego-Suarez, Madagascar. 



H. consanguinea Fer., DESH. in FER., Histoire, t. 69H, f. 1, 2. 

 PFR. Monogr. iii, p. 239. ? H. zonalis REEVE, f. 94, not of Ferussac. 



The " zonalis " of Reeve is the same as a shell figured by Pfeiffer 

 in the Conchylien Cabinet, pi. 149, figs. 8, 9, and described on p. 

 424 of the same work, under the name of " H. consanguinea Fer." 

 I do not know what these figures really represent. They may belong 

 to a distinct and undescribed species, or to a variety of the present 

 form, which, for want of a name may be called var. SUBCONSAN- 

 GUINEA. Pfeiffer's figures are copied on my pi. 63, figs. 46, 47. 



H. GUILLAINI Petit. PL 4, fig. 64. 



Shell suborbicular, solid, glabrous, depressed, olivaceous-yellow, 

 narrowly umbilicated ; umbilicus subangulate ; whorls 4, plane, the 



