HELIX-AMPELITA. 23 



descending, rounded, flattened or subcom pressed on the base, orna- 

 mented with three deep blackish-brown spiral zones, the upper and 

 smallest one above, the second a little below the periphery, the third 

 occupying the entire umbilicus, which is large and shows all the 

 whorls of the spire. There is a fourth narrow subsutural band. 

 Aperture very oblique, oval-elliptical, whitish inside, but two of the 

 zones of the outside show through. Peristome broadly reflexed, 

 edged with brown at the terminations of the zones. Lips united by 

 a deposit of callus. ( Crosse.) 



Alt. 23, greater diam. 40*, lesser 32 mill. ; length of aperture 

 (inclusive of peristoine) 26, breadth 19* mill. 



Madagascar. 



H. subsepulchralis CROSSE, Journ. de Conchyl. 1868, p. 174; I. c. 

 1869, p. 391, t. 12, f. 3, and variety, f. 3a. PFR. Monographia, 

 vii, p. 436. ANGAS, P. Z. S. 1877, p. 803, t. 80, f. 3. H. sepul- 

 chralis (in part) REEVE, Conch. Icon., f. 147b. 



Distinguished from If. hova Angas by its more turbinate form and 

 broader umbilicus, as well as by the positions of the color bands. 

 From H. sepulchralis by the more solid shell, elevated spire, number 

 of whorls, the last lacking a spiral depression on the upper surface, 

 and by the thick parietal coat of enamel. Another strongly marked 

 character is that the bands of the outer surface color the lip ; this is 

 not the case in H. hova. The callus connecting the ends of the 

 peristonie is white and opaque, not transparent, as in If. sepulchralis. 



Variety /5. (figure 47). A little larger, the colors deep, with three 

 broad zones. 



Alt. 25, greater diam. 43 1, lesser 34 mill. ; length of aperture 29, 

 breadth 26 mill. 



H. STRAGULUM Crosse and Fischer. 



Shell narrowly umbilicated, much depressed, rather thin, with 

 very delicate impressed incremental lines and minutely granose un- 

 der a lens ; chestnut-brown, spotted sparsely with buffmaculatioris; 

 spire nearly plane, apex obtuse ; suture impressed ; whorls 4, plane, 

 rapidly increasing, the upper 2 violet-brown, the last margined at 

 the suture with yellow, large, subdepressed above, angulate-carina- 

 ted a little above the periphery ; base convex, inflated, subangular 

 around the umbilicus ; umbilical area deep chestnut, bounded by a 

 pale buff zone; aperture large, very oblique, elliptical-oval, bluish- 

 white inside ; peristoine broadly reflexed, bluish- white, margins 



