106 



columella simplici, postice callo Into induta. Axis J ; (Ham. \ 

 poll. 



Lms and marshes on Hong Kong Island. (Wright.) 

 Very much like a small L. modiceUa. 



Anctlus <.. \.ulus. T. oblique pyramidata, apice ad quad- 

 rantem posteriorem longitudinis, dextrorsum inclinato, obtuso ; 

 epidermide luteo-cornea, superne fusca. Apertura rotundato- 

 ovata. intus plumbea^ Long, -i- ; lat. -\ ; alt. T ] ff poll. 



Inhabits Cape of Good Hope. W. S. 



A soUd, well rounded species, without any salient characters. 



Planorbis spirillus. T. parva, discoidea, utrinque concava, 

 tenuis viridi-cornea, plerumque liris ad quatuor prope aperturam 

 instructa : anfr. o-\- utrinque apparentibus, sutura impress^. 

 Apertura ampla, perobliqua, lata, lunata. Diam. ^ ; alt. 2 \j poll. 



Inhabits Ousima. W. S. 



Very like to P. albus and deflectus ; perhaps the same thai 

 Middendorff refers to under the former name, as from Kam- 

 tschatka. 



SEGMENTINA LUCIDA. T. parva, tenuis, orbicularis, dilute 

 cornea, radiatim viridi-lineata, supra fornicata, infra poculiformis, 

 vix perforata : anfr. 4, ultimo lato, declivi ; sutura impress^. 

 Apertura ampla, postice acuta, antice rotundata ; fauce denticulis 

 armata. Alt. ^ ; lat. -\ poll. 



Inhabits Loo Choo. W. S. 



Smaller and more elevated than the following, with quite a 

 different surface and color. 



Segmentina osta. T. depressa, orbicularis, concavo-convexa, 

 nitida, uinbrina. late umliiiicata ; anfr. 6, apicalibus arctissiniis, 

 excavatis, ultimo amplo, declivi; sutura canaliculata. Apertura 

 perobliqua, anguste lunata; fauce in i'undo quadridentata. Alt. 

 Vo i diam. ^ poll. 



Inhabits Loo Choo Islands. W. S. 



Resembles in color S. Largillierti, which is larger, less pol- 

 ish! d, more largely umbilicated. 



l'.u.iDixA histrica. T. ovato-conica, variabilis, tenuis, stri- 

 atula, rufo-cornea ; anfr. 6 ventricosis, pOstiee tabulatis, ultimo ad 

 peripheriam subangulato, albido ; sutura profunda. Apertura 



