CHIEFLY OF THE UNITED STATES. 115 



Operculum horn color, somewhat transparent, subtriani^uhir. 

 Proc. Ac:k1. Nat. Sci. 1856, p. 110. 



Hah. — Carthagena, Col. Totten, and J. C. Traitwiiie, Esq. 



My cabinet. 

 Diam. '98, Length 1'14 inches. 



Remarks. — A very pretty little species with a fine golden apertnre and rather 

 thickened lips, which are more intense in color than the interior. It is nearly of the 

 same outline as Pealeiana (nobis) and crassa, Swainson, but differs from both in being 

 thicker than the first and not so thick as the last. It is easily distinguished from 

 both by its golden colored aperture. 



Paludina orientalis. pi. 22, fig. 5. 



Testa carinata, pjramidata, rufo-eastanea, suborassa, arctissime umbilicata, striata; spira elevata; suturis 

 impressis; anfractibus septenis, planulatis, in meJio carinatis, supcrue geniculata; apertura subrotunda, 

 inourvata ; labro angulato. 



Shell carinate, pyramidal, reddish chestnut, rather thick, narrowly umbilicate, 

 striate ; spire elevated ; sutures impressed ; whorls seven, flattened, carinate in the 

 middle, geniculate above ; aperture subrotund, incurved; angular on the outer lip. 



P. Chvnensk* Lea, Proc. Acad. Nat. Sci., 1860, p. 110. 



Hob. — China, W. A. Haines. 



My cabinet and cabinet of Mr. Haines. 

 Diam. -71, Length 1-20 inch. 



Remarks. — This is a very unusual form for a Paludina, having a very marked angle 

 on the middle of the body whorl. I have three specimens before me. One of them, 

 kindly loaned to me by Mr. Haines, is a little more than half grown, and presents a 

 very strong carina, on the interior of which there is a corresponding groove. The 

 other two specimens were purchased by me many years since in London, and said 

 then to come from China. On one of these the carina is not so well marked; the 

 other has lost its epidermis, and does not present the fine revolving strias which may 

 be seen on the others. The angle on the body whorl reminds one of the P. pyra- 

 midata Phili., (v. 3, t. 1, f. 3 and 4,) but it is not so wide in proportion to its height, 

 nor has it bands. 



Paludina Hainesiana. PL 22, fig. 6. 



Testa ventricoso-conoidea, subglobosa, pondcrosa, solida, viridi-palida, arctissime umbilicata, lajvi; spira 

 obtusa, ad apicem caruea; suturis valde impressis; anfractibus senis, couvexis, ultimo amplo; aper- 

 tura magn'j, subrotundata, iutus albida; columella alba, crassa, incurvata. 



Shell ventricoso-conical, subglobose, ponderous, solid, pale green, narrowly umbili- 



* Changed to orientalis, Cliiiienais being preoccupied by Ur. Gray. 



