HELIX-EUHADRA. 95 



Section III. RHAGADA Albers, 1860. 



Shell rather small, depressed-globose, solid, white and calcareous, 

 generally encircled by numerous bands. Aperture very oblique ; 

 peristome a little expanded," reflexed nearly over the umbilicus. 

 Type, H. reinga Gray. 



Australia. 



Section IV. XANTHOMELON Martens, 1860. 



Shell large, globular, the spire very short, body-whorl large, glo- 

 bose, descending in front ; aperture semioval, oblique ; peristome 

 narrowly expanded, thickened within, columellar lip broad, flattened, 

 reflexed over and covering the umbilicus in whole or in part. Sur- 

 face roughened, covered by a yellow epidermis. Type, H. pomum 

 Pfr. 



Australia. 



Section I. EUHADRA Pilsbry. 



Hadra and Camcena in part, of authors. 



Helix peliomphala may be taken as the type of a group of helices 

 numerous in species throughout Japan, and also well represented in 

 China and Formosa. To this group or section (which represents in 

 the northern hemisphere the sections Hadra and Sphcerospira from 

 south of the equator) I have given the name Euhadra. 



Group of H. peliomphala Pfr. Surface of shell obliquely striate, 

 and seen under a lens to be decussated by very close minute, incised 

 spiral lines. 



Group of H. succincta Ad. Shell conical above, convex below, 

 carinated at periphery ; umbilicus narroiv, deep, cylindrical ; surface 

 obliquely striate, often with shallow spiral grooves ; color brown or 

 yellowish, with a dark band just on and above the periphery. 



Group of H. mandarina Gray. Shell solid, compact, globose- 

 conic ; axis solid, im perforate. 



Group of H. peliomphala Pfr. 



H. SIMODJE Jay. PI. 41, figs. 1, 2, 3. 



Shell depressed, deeply umbilicate, light buff, with a narrow supra- 

 peripheral chestnut band ; surface microscopically decussated ; spire 

 very obtuse, slightly convex, not at all conoidal. 



