94 HELIX. 



growth often not distinguishable. The surface is either striate or 

 decussated, not nialleated or obliquely wrinkled. 



Synopsis of Sections. 



Section I. EUHADRA Pilsbry, 1890. 



Shell depressed, the spire depressed or low-conoidal ; rather thin; 

 umbilicus moderate, rarely covered ; surface striate, and decussated 

 by fine spiral lines ; aperture oblique, lunar, broader than high, the 

 peristome expanded, dilated and reflexed at the columellar insertion. 

 Type If. peliomphala Pfr. Species mostly inhabiting Japan, China 

 and the adjacent islands. 



Section II. HADE A Albers, 1850 (restricted). 



Shell umbilicate or imperforate, globose turbinate, the spire more 

 or less conical ; solid ; surface nearly smooth, obliquely striate, some- 

 times hirsute, but without spiral strice. Aperture rounded-lunar ; per- 

 istome expanded, generally reflexed. 



Neiv Guinea, Australia, etc. 



Subsection HADRA (sensu stricto). Shell narrowly umbilicate, 

 obliquely striate or hirsute, uuicolored brown or brown below, yellow 

 above ; never having numerous bands. Spire conoidal ; peristome 

 expanded, reflexed. Type H. bipartita Fer. 



Australia, etc. 



Subsection BADISTES Gould, 1862. Shell globose-depressed some- 

 times carinated moderately solid or thin, chestnut colored, yellowish 

 or greenish, often subtranslucent ; surface microscopically densely 

 granulated all over. Aperture oblique, rounded-lunate ; peristome 

 a little thickened and very narrowly expanded, suddenly dilated at 

 the columella, covering or almost covering the narrow umbilicus. 

 Type, H. grayi Pfr. Australia. 



Differs from Sphcerospira in the less expanded peristome and ten- 

 dency to be carinated. 



Subsection SPH.EROSPIRA Morch, 1867. Shell globose, elevated, 

 chocolate colored, or yellowish with numerous brown spiral bauds 

 and lines ; umbilicate or imperforate ; surface smooth or nearly so ; 

 spire hemispherical or dome-shaped ; peristome broadly expanded, 

 often reflexed. Type If. frazeri Gray. 



Australia; New Guinea. 



