124 HELIX-EUHADRA. 



at the periphery, which is slightly above the middle of the whorl ; 

 it does not descend in front. The aperture is broadly lunar, whitish 

 inside, oblique; peristome flesh-colored, thickened, its face flattened 

 on the upper and outer margins (which are expanded), the baso- 

 columellar margin very convex on its face, reflexed, somewhat 

 straightened, dilated partly over the umbilicus. The umbilicus is 

 narrow, but deep and cylindrical. 



Alt. 31-32, diam. 47-49, lesser 39-40 mill. 



Island of Tablets, Philippines. 



f Hadra philippinensis SEMPER, Reisen im Archipel der Philipp- 

 inen iii, Landmollusken, iv Heft, t. 10, f. 7a, b, 1877. 



A beautiful tawny species, of which two specimens lie before me. 

 Both lack epidermis, a peculiarity I am disposed to believe may 

 be constant in the species. It seems to me to be allied to H. cali- 

 ginosa, mercatoria, etc., although the texture is decidedly heavier and 

 stronger, and the whorls widen more rapidly. 



Judging from Hidalgo's remarks (Journal de Couchyliologie, 

 1887, p. 110) I am disposed to believe that the true philippinensis 

 was not before him. 



Group of H. mandarina, Gray. 



Shell solid, compact, globose-conical, elevated, the top obtuse ; 

 axis or pillar solid at all stages of growth; lip obtuse, thickened-, 

 slightly expanded. 



H. MANDARINA Gray. PL 31, fig. 32. 



Shell globose-conical, the spire elevated, obtuse ; imperforate ; solid ; 

 reddish-brown, with a light peripheral band, or sometimes yellowish, 

 lightly streaked with reddish, encircled at periphery by a narrow 

 deep brown band which is bordered above and below by whitish 

 bands. Surface rather rudely but inconspicuously obliquely striate. 

 Spire elevated, conical, obtuse ; suture well impressed. Whorls 5 J, 

 the inner H scarcely convex, the others convex, slowly widening, 

 the last convex below, not indented around the axis, slowly descend- 

 ing or not descending in front. Aperture semicircular, very 

 oblique ; lip flesh-colored, blunt, slightly expanded, evenly arched 

 all around, the columellar margin much thickened. 



Alt. 23, diam. 26 mill. 



Alt. 23, diam. 29 mill. 



Alt. 20, diam. 23 mill. 



Liu-Mu Islands. 



