AM E R I C A ST 



JOHMAL OF C0SCH0L06Y. 



YoL. II. OCTOBER 1, 1866. No. 4. 



DESCRIPTIONS OF NEW SPECIES OP LAND SHELLS, 

 INHABITING POLYNESIA. 



BY WILLIAM HAEPER PEASE. 



1. Helix Oualanensis, Pease. — t. 20, fig. 1. 



Description. — T. parva, discoidea, tenui, lucida, supra plana, 

 ad peripheriam rotundata; spira depressa, planameffor mantes; 

 anfr. 3-4, celeriter accrescentes, radiatum striis tenuis incre- 

 mentis subrugosis, concentrice sub lente striatis; ultimus basi 

 rotundatus, late umbilicatus. Cinereo-iutescens, lineis aut 

 strigis castaneis, angulatis et flexuosis, obliquis, ornata. 



Dimensions. — Diam. 5, alt. 2 mill. 



Shell small, discoidal, tbin, sbining, plane above, periphery 

 rounded ; spire depressed, forming a plane, slightly concave 

 at apex ; whorls 3-4, somewhat roughened by radiating stria3 

 of growth, concentrically obsoletely striated, the last whorl 

 rounded at base, widely umbilicate. Color light greyish^yellow, 

 ornamented with brownish-red zigzag lines or stripes, oblique- 

 ly, sometimes radiately disposed. 



