36 HELIX-AMPELITA. 



umbilicus ; coluraella [parietal wall] scarcely calloused, violet 

 colored. (F. & B.) Alt. 14, greater diam. 26, lesser 22 mill. 



Madagascar f 



H. cazenavetti F. & B., Journal de Conchyl. vi, p. 280, t. 10, f. 1- 

 2, 1857. If. gidllaini PFR., Monographia iv, p. 302 (not H. 

 guillaini Petit.). H. cazenavetti F. & B., PFEIFFER, Monogr. v, p. 

 402. 



H. FULGURATA Sowerby. PI. 8, figs. 12, 13, 14. 



Shell umbilicate, depressed, acutely carinated, regularly decussa- 

 ted by close longitudinal and transverse lines, shining, whitish, 

 elegantly marked with zigzag reddish lines ; spire nearly flat ; 

 whorls 4, plane, the last ornamented with a single concentric red 

 band ; base inflated, angulated around the narrow funnel-shaped 

 umbilicus ; aperture subtriangular, shining inside, livid ; peristome 

 chestnut colored, the margins joined by a chestnut callus diffused 

 inwardly on the parietal wall ; upper margin subexpanded, basal 

 reflexed, forming an obtuse angle with the short oblique columellar 

 lip. (Pfr.) Alt. 14J, greater diam. 37, lesser 30 mill. 



Madagascar. 



H. fulgurata SOWB. in Malacol. and Conchol. Mag. i p. 47c, 

 plate. PFR. Symbolse iii, p. 79 ; Monographia i, p. 393 ; Conchyl. 

 Cab., p. 239, t. 112, f. 20-22. REEVE, Conch. Icon., f. 1446. 

 CROSSE & FISCHER, Journal de Conchyliologie, 1873, p. 117. 



An excessively rare species in collections, the habitat of which, 

 formerly unknown, was discovered by Mr. Lantz, Director of the 

 Museum of Natural History of Reunion, to be Madagascar. 



H. LANCULA Ferussac. PI. 7, figs, 98, 9, 100. 



Umbilicate, orbicular, depressed, obliquely striate decussated by 

 very close concentric lines seen under a lens, shining olive-brown, 

 carinate, the carina obsolete anteriorly ; spire little raised, pale ; 

 whorls 4, plane, the last flattened around the base, angulated around 

 the moderate non-pervious umbilicus ; aperture very oblique, trans- 

 versely lunate elliptical ; peristome subthickened, narrowly reflexed, 

 bluish-brown ; margins joined by a dark purple callus, diffused 

 inwardly, right margin dilated, depressed, basal margin straightened, 

 forming a very obtuse angle at its junction with the columellar lip. 

 (Pfr.) Alt. 14, greater diam. 32, lesser 28 mill. 



Madagascar. 



