OF CONCHOLOGY. 



223 



DESCRIPTIONS OP NEW SPECIES OP LAND SHELLS, 

 INHABITING POLYNESIA. 



BY W. HARPER PEASE. 



Partula obesa, Pease. — Plate 15, fig. 12. 



Description. — T. umbilieata, abbrevlata, conico-ovata, tenui- 

 scula, transversim confertim minutissime undulato-striata ; anfr. 

 4|, ultimus magnus, inflatus, oblique productus, longitudinis tes- 

 tae 3-4 sub?equans, basi rotundatus ; spira brevis, conica, acu- 

 tiuscula ; apcrtura obliqua, ovata ; labro valde planulatim ex- 

 panso, alba; columella superne vix dilatata;_ virescente-flavida, 

 infra suturas fascia alba cingulata. 



Dimensions. — Long. 20, Diam. 14 mill. 



Hah ? 



Shell umbilicate, abbreviate, conically ovate, rather thin, 

 light, transversely very finely, closely and undulately striated ; 

 whorls 4|-, the last very large, comprising nearly three-fourths 

 the length of the shell, somewhat inflated and produced obliquely, 

 rounded at base ; spire short, conical, rather acute ; aperture 

 oblique, ovate ; lip widely flatly expanded, white on both its 

 outer and inner sides ; columella slightly expanded above ; 

 greenish yellow, encircled with a broad white band beneath the 

 suture. , 



Observations. — We have no locality for the above species. It 

 appears to approach the Marquesan type, and inai/ be allied to 

 Ulacina, Pfr. It is covered with a thin epidermis, which, 

 when worn off, would probably leave the shell without color, as 

 is the case with Gfanpnedes, Pfr. We have but a single 

 specimen. 



