58 ON THE NAIADES, 



Helix globula. Plate XIX. fig. 70. 



Testd globosd, tenebroso-corned, pellucidd, umbilicatd, longitudinaliter striata; 

 anfractibus qiiinis; spird obtuso-elevatd ; aperturd latdet subrotundd ; labro sim- 

 plici; columelld Isevi. 



Shell globose, dark horn colour, translucent, umbilicated, longitudinally striate ; 

 whorls five; spire obtusely elevated; aperture wide and round; outer lip simple; 

 columella smooth. 



Hab. China, near Canton. W. W. Wood. 



My Cabinet. 



Cabinet of Mr Hyde. 



Diam. -6, Length -5 of an inch. 



Remarks. — I owe to the kindness of Mr Wood the specimen which 

 is here figured. It is remarkable for its globular form and its dark 

 horn-coloured epidermis. It has somewhat the aspect of a Paludina. 



Paludina bi-monilifera. Plate XIX. fig. 71. 



Testd abbreviato-turritd, tenebroso-corned, apice obtusd ; anfractibus seriebus 

 duabus noduloruni circumdatis ; nodxdis seriei inferioris unfractuum superior- 

 um siiturd celatis ; nodulis seriei superioris majoribus, et super omnes anfrac- 

 tus conspicuis ; sututns profundis et irregularibtcs ; labro sub-biangulato ; basi 

 subangulatd. 



Shell obtusely turrited, dark horn colour ; apex obtuse ; whorls furnished with two 

 rows of nodules ; the nodules of the lower row of the upper whorls hidden by the su- 

 ture, those of the upper row larger, and visible on all the whorls ; sutures deep and 

 irregular ; outer lip sub-biangular ; base subangular. 



Hab. Alabama River. Judge Tait. 



My Cabinet. 



Cabinet of Professor Vanuxem. 



Cabinet of the American Philosophical Society. 



Cabinet of the Academy of Natural Sciences of Philadelphia. 



