AND OTHER FAMILIES. 81 



Melania aculeus. Plate XIX. fig. 72. 



Testd acuto-elevaia, lasvissimd, tenehroso-corned ; apice acutissimo ; anfractibus 

 circiter duodecim, subconvexis ; luhro expasso. 



Shell acutely elevated, very smooth, dark horn colour ; apex very acute ; whorls 

 about twelve, somewhat convex ; labrum spread out. 



Hab. Java? 



My Cabinet. 

 Diam -6, Length 2 inches. 



Remarks. — I purchased this, with some other of the shells described 

 in this memoir, from the collection brought from Java by Mr Shilla- 

 ber. It is remarkable for its attenuated form and tapering spire. It 

 is more than usually spread out at the base. The substance of the 

 shell is thin and bluish white. The last whorl is much enlarged. 

 The aperture occupies about one-third of the length of the shell. 



LvMN.tA impeuialis. Plate XIX. fig. 73. 



Testd ovato-ventricosd, pellucidd, tenuissimd, albido-corned, subcoronatd ; apice 

 obtuso ; anfractibus quaternis, injlatis, ultimo maxima ; aperturd magnd, ovatd ; 

 labro vahle extenso. 



Shell ovato-ventricose, diaphanous, very thin, light horn colour, subcoronate ; apex 

 obtuse ; whorls four, inflated, the last very large ; aperture large, ovate ; outer lip 

 much extended. 



Hab. South America.' 



My Cabinet. 

 Diam. -9, Length 1-4 inches. 



Remarks. — I accidentally met with this rare and interesting shell 

 at a dealer's in Paris. I saw no other specimen in any of the great 

 collections in Europe. The person from whom I obtained it informed 

 me it came from South America. It is more inflated than any spe- 



VOL. V. — V 



