HELIX-AMPELITA. 25 



callus ; H. hova differs from H. subsepulchralis in the different dis- 

 tribution of the color-zones and in having a narrower umbilicus. 



Several specimens before me have no dark spiral zones, being 

 unicolored yellow or russet. The bands are present, but of a faint 

 chestnut tint in some others. 



I have figured on PI. 64, figs. 64, 65, a color-variety of this 

 species. It is chocolate-brown above, uniform in color except for 

 irregular, radiating, creamy, hydrophanous, ragged-edged patches, 

 and a narrow, indistinct trace of a spiral band. The basal brown 

 zone is very wide. The specimen figured is from the museum of 

 the Wagner Free Institute of Science, Philadelphia. 



H. LAMAREI Menke. PI. 5, figs. 65, 66, 67. 



Shell ri mate-perforate, depressed, conspicuously excavated above, 

 unicolored greenish-yellow or banded with chestnut, or chocolate ; 

 when dark, freckled with whitish. 



Depressed ; low convex above, the last whorl convex just below 

 the suture and then deeply concave, angulated or carinated above 

 the middle, very convex and inflated below the angle ; solid ; color 

 {typically) brownish- or greenish-yellow; surface shining, nearly 

 smooth, obscurely granular under a lens. Spire low ; whorls 4 to 

 4, the last descending somewhat anteriorly, compressed around the 

 base, and obtusely angular around the umbilicus. Aperture very 

 oblique, rounded-lunar ; upper and outer margins of peristome very 

 broadly expanded and reflexed, baso-columellar margin very nar- 

 rowly reflexed ; terminations joined by an opaque white callus. 

 Umbilicus a crescentic rimation ending in a minute perforation. 



Alt. 16, greater diam. 34, lesser 26 mill. 



Madagascar. 



H. lamarei MKE. mss. in PFEIFFER, Symbolse iii, p. 79 ; Mono- 

 graphia i, p. 392 ; Conchylien Cabinet, p. 272, t. 123, f. 22-24. H. 

 mkalava ANGAS, Proc. Zool. Soc. London, 1877, p. 804, t. 80, f. 6- 

 11. H. sepulchralis (in part) FEB., Histoire, t. 75C, f. 6, 7. 

 Ampelita lamarei Mke. MOUSSON, Journ. de Conchyl. 1882, p. 39. 



The typical H. lamarei has a thin greenish-yellow epidermis ; the 

 last whorl is rather acutely keeled ; the umbilicus is a curved rima- 

 tion ending in a perforation or entirely closed. f In this character it 

 differs wholly from unicolored yellow or brown specimens of H. hova, 

 as that species has a narrow but decidedly funnel-shaped umbilicus. 



