124 NEW UNIONID^, MELANID^, ETC., 



Melania Ningpoensis. pi. 22, fig. 20. 



Testa perplicata, striis transversis cretris decussata, conoidea, tenui, pallida cornea, subdiaphana; spira 

 subelevata ; suturis valde impressis ; anfractibus instar novem, subconvexis, inferne transversim cos- 

 tatis ; apertura parva, subrotunda, intus alba j columella alba. 



Ojperculo tenui, pallido-corneo. 



Shell covered with folds and with close transverse decussating strise, conical, thin, 

 pale horn color, rather pellucid ; spire rather elevated ; sutures very much impressed ; 

 whorls about nine, rather convex, below transversely ribbed ; aperture small, rounded, 

 within white ; columella white. 



Operculum thin, pale horn color. 



Proc. Acad. Nat. Sci., 1856, p. 144. 



Hah. — Ningpo, China, W. A. Haines. 



My cabinet and cabinet of Mr. Haines. 

 Diam. -oS, Length -91 inch. 



Remarlcs. — This species is remarkable for its numerous and strongly marked folds 

 covering all the whorls but the base, which is furnished with three or four strongly 

 marked equidistant transverse lines or ribs. Both the folds and the lines may be seen 

 from the inside, and are very remarkable. The aperture is more than one-fourth the 

 length of the shell. 



Melania Mtersiana. PI. 22, fig. 21. 



Testa plicata, conoidea, tenui, diapbana, rufo- cornea; spira subelevata; suturis impressis; anfractibus 

 instar octo, subconvexis, striis exilissimis impressis ; apertura ovata, superne angulata, ad basim uni- 

 fasciata ; labro acuto ; columella albida. 



Shell plicate, conical, thin, pellucid, reddish horn color; spire rather elevated; 



sutures impressed ; whorls about eight, somewhat convex ; strise minutely impressed ; 



aperture ovate, angular above, at the base single banded ; outer lip acute ; columella 



whitish. 



Proc. Acad. Nat. Sci., 1856, p. 145. 



Hah. — Fejee Islands, W. A. Haines. 



My cabinet and cabinet of Mr. Haines. 

 Diam. 'SS, Length '87 inch. 



Remarlcs. — There are three specimens before me, which are, I believe, all Mr. 

 Haines received from Dr. House. They all difier in the strength of the folds. One 

 has strong folds on every whorl ; another has numerous rather undefined ones, and 

 the third has them still less defined. In the form of the aperture they are precisely 

 alike, and each has the well defined dark band at the base of the whorl. This band 

 is more conspicuous within. The specimen with the coarse and strong folds is not so 



