'1^ 



rili: ANNALS 



AND 



MAGAZINE OF NATURAL HISTORY. 



[SIXTH SERIES.] 

 No. 119. NOVEMBER 1897. 



XLVIII. — On a Collection of L'lml- Shell s from New Guinea. 



By Edgar A. Smith. 



[Plate IX.] 



The specimens about to be enumerated and described were 

 collected by Mr. W. Dolierty chiefly at Kapaur, a moun- 

 tainous region on the south-west coast of New Guinea, and 

 at Takar, in the north-west of the island. The two forms of 

 the new genus Ditrojjopsis and the new species of Perrieriaj 

 Pupinella, and Adelomorpha are especially interestiug. All 

 the specimens are in the National Collection. 



Rhytida kapaurensis. (PI. IX. figs. 1-3.) 



Testa depressa, orbicularis, aperte umbilicata, tenuis, translucens, 

 cornea, epidermide nitida, Havo-olivacea induta ; spira depressa ; 

 anfractus 4, celeritcr accrescentes, sutura profunda sejuncti, con- 

 vexiusculi, lineis incrementi obliquis, arcuatis, prope suturani 

 validis, sculpti, ultimus supra depresse declivis, antice sub- 

 descendens ; apertura obliqua, late luuata ; peristoma tenue, 

 marginibus callo tenuissimo junctis, columellari vix reflexo, 



Diam. maj. 16 millim., miu. Vd; alt. 7. 



Hab. Kapaur. 



Very closely related to B. trohriandensis^ Smith, but 

 rather more openly unibilicated, more strongly striated, with 

 a deeper suture and a more oblique and differently shaped 

 aperture. 



Ann. ds Mag. N. Hist. Ser. 6. Vol. xx. 28 



