FLLMINICOLA. 



91 



Aniiiicola hindsi, Baikd. — Shell obtuse, rather solid, greenish-olive, with 

 delicate longitudinal wavy stric-e and ill-defined 

 transveise furrows ; apex eroded ; whirls four, "Eia. 179. 



the last one bluntly carinated near the middle, 

 channelled at the iuipressed sutures; columella 

 white ; aperture bluish. 



River Kootauie and stream at foot of Rocky 

 Mountains, British Columbia. Amnicola hindsi. 



Differs from Paludina seminalis, Hinds, in con- 

 tour, being bluntly carinate round the middle of the last whirl, and in 

 being channelled round the suture. The surface of the shell is distinctly 

 marked with numerous flexuose strise, the lines of growth, and near the 

 sutures is rather indistinctly marked with circular striae. {Baird.) 



Fliiiuinicola vireiis, Lea.— Shell oblique, thick, somewhat gra- 

 nose, green ; whirls rather inflated ; aperture ovate. 



Wahlamat, near its junction with the Columbia River : Prof. ^ig. 180. 

 Nuttall. My cabinet ; cabinet of Prof. Nuttall. Diam. .2, 



length .4 inch. /^ 



The apices of all the specimens which Prof. Nuttall gave me ( ^ 



are destroyed, so that it is impossible to give some of the \j 



characters of this species. It is remarkably solid for so small paiudina 



a species. (^Lea.) virens. 



Paludina virens, Lea, Tr. Am. Phil. Soc. VI, 91, pi. 



xxiii, f. 93 (1839) ; Obs. II, 93. Fig. 181. 



Leptoxis virens, Haldeman, Lept. 5, pi. v, f. 147-150 



(1847?). See my Fig. 181. 

 Paludina nucha, Lea (/. c), VI, 91, pi. xxiii, f. 103 



(1839) ; Obs. II, 91. 



Haldeman, I. c, places doubtfully in the sy- 

 nonymy Pal. nuclea, Lea, of which the original 

 description and figure are given below. Leptoxis virens. 



P<dudina nucha, Lea. — Shell obtusely turreted, solid, horn-color, smooth; 

 sutures impressed ; whirls 5 ; aperture white, oval. 



