224 



DESCRIPTION OF TWO NEW SPECIES OF HELICOID 

 LAND-SHELLS FROM GERMAN NEW GUINEA. 



By J. H. PoNsoNBT, r.Z.S. 



Read I'tth December, 1906. 



Rhttida Bednalli, n.sp. 



Testa depressa, tenuis, patuliformis, corneo-f usca, nitida, umbilicata ; 

 anfr. 4 rotundati, sutura bene impressa, vix canaliculata separati, 

 undique pulcherrime regulariter costulati et lineis nonnuUis spiralibus 

 leviter notati, ultimus rotundatus, non descendens ; umbilicus apertus, 

 infundibuliformis, usque ad apicem pervius, anfr. omnes exbibens ; 

 apertura obliqua, fere rotunda, tenuis, marginibus distantibus. Diam. 

 maj. 7, min. 6 mm. ; alt. 3-5 mm. ; apertura 2*5 lata. 



Hah. — German New Guinea. 



A pretty little species with rather deeply cut suture and wide 

 perspective umbilicus. The spiral sculpture, which in reality is little 

 more than impressed scratches, is very irregular, but here and there 

 distinctly visible both above and below the rounded periphery. 



COLIOLUS THEIX, n.Sp. 



Testa elata, conico-pyramidalis, umbilicata, fusca, strigis et maculis 

 albidis sparsim notata sub epidermide brunnea, dense longipilosa ; 

 anfractus 8-9, convexi, ultimus acute carinatus, vix descendens ; 3 primi 



enibryonales spiraliter striati, cceteri undique oblique ruditer striati, 

 epidermide hirsuta induti, sensim a peripheria ad apicem obtusum 

 decrescentes. Basis fere plana, medio circa umbilicum modicum 



