NANINA. 123 



C. Umbilicated. 



N. EURYOMPHALA, Bourg. PL 41, fig. 79. 



Umbilicated, smooth, thin, pellucid, shining, very lightly 

 striate ; corneous; whorls 5^, suture submargined. 



Diam. 6, alt. 3 mill. Abyssinia. 



N. PAUXILLUS, Gould. PL 41, figs. 51-53. 



Umbilicated, thin, costulately striated above ; greenish hya- 

 line ; whorls 4. Diam. 4*5, alt. 2 mill. 



Sandwich Islands, 

 It is N. pusillus, Gould, not Lowe. 



N. PERFORATA, Desh. PI. 41, figs. 83, 84. 



Umbilicated, fragile, pellucid, very minutely closely, irregu- 

 larly striated above, smooth below ; yellowish corneous ; whorls 



4f-5. Diam. 6, alt. 3'5 mill. 



Pekin . 

 X. MOLLENDORFFI. Reinliardt. PL 41, figs. 56-58. 



L T mbilicated, polished, lightly striulate, decussated by very 

 slight spiral striae ; fulvous ; whorls 5A, suture narrowly mar- 

 gined. Diam. 10, alt. 5'5 mill. 



Pekin. 

 N. REJECTA, Pfr. PL 41, figs. 44, 63-65, 66-68. 



Narrowly umbilicated, thin, striulate, shining; brownish- 

 corneous, a little paler around the umbilicus; whorls nearly 5, 

 suture submargined. Diam. 12, alt. 5 mill. 



Northern and Central China. 



N. mamillaris, Heude (figs. 66-68), is a synonym. 



N. PLANATA, Heude. PI. 41, figs. 72-74. 



Umbilicated, smooth, polished; light amber-colored; whorls 

 4, the last one rapidly enlarging. Diam. 10, alt. 3'5 mill. 



Hounan, China. 



Un figured Species of Microcystis. 



N. PUNCTIFERA, GaiTCtt. Eumtu Isl. 



N. SORORIA, Cox. Ovalau, Fiji Is. 



N. PATESCENS, Cox. Norfolk Island. 



N. CATLETTI, Brazier. Lord Howe's Isl. 



N. KERMANDECI, Pfr. Sunday Isl., Kermandec Group. 



