396 PUTILLA-SKENELLA-JEFFREYSIA. 



DUNKERIA FERRUGINEA, CANDIDA, RUFOCINCTA, FUSCA, CRATI- 

 CULATA, ASPERULATA, PULCHELLA, all of A. Adams. 



China and Japan. 

 These have been included in Fenella by Nevill. 



Genus PUTILLA, A. Ad. 1867. 

 P. LUCIDA, A. Ad. PI. 60, fig. 85. 



Rimate, solid, subpellucid, smooth, shining, white; whorls 4, 

 convex; lip simple, thick. Length, 3 mill. 



Japan. 

 Genus SKENELLA, Pfeffer. 1886. 



S. GEORGIANA, Pfeffer. PI. 60, fig. 96, 97. 



Shell with Lacuna-like umbilicus, obliquely, longitudinally, 

 irrregularly, thinly, plicate-striate, greyish brown; whorls 3, rounded, 

 with deep suture; lip simple, acute, continuous, aperture bright corne- 

 ous, shining. Length, 1'5 mill. 



Isl. South Georgia. 

 Family JEFFREYSIID^E. 



Genus JEFFEEYSIA, Alder. 1849. 



J. BIFASCIATA, Carp. PL 60, fig. 86. 



Narrowly umbilicated, diaphanous, very thin, smooth, light 

 brownish, with two darker bands, sometimes absent; whorls 5, 

 subtumid, suture impressed, margined. Length, 1'25. 



Mazatlan. 

 J. ALDERI, Carp. PI. 60, fig. 87. 



Like the preceding, but much larger and more solid; whorls 5, 

 more planate, bands narrow. Length, 1*75 mill. 



Mazatlan; Todas Santos Js., L. Cal. 



J. GLABRA, (Alder) Brown. PI. 60, fig. 88. 



Shell rimate, very thin, pellucid, smooth, vitreous white, spire 

 obtusely truncate; whorls 4o, convex, with deep suture; aperture 

 rounded, coluniella flexuous. Length, 1'5 mill. 



Europe. 



J. diaphana, Alder is a synonym, and is the name under which 

 this species is generally known. 



J. OPALINA, Jeffreys. PL 60, fig. 89. 



Kimate, very thin, semipellucid, shining, , opaline, corneous ; 

 whorls 3-1, tumid, rapidly increasing; lip acute, base expanded, 



columella flexuous. Length, 2 mill. 



Europe. 

 Monterosato has indicated a var. minor. 



