50 
OBSERVATIONS. 
A large and beautiful species, common in the Ten- 
nessee river at Florence. It is perhaps most nearly 
allied to M. Sayi, (M. canaliculata , Say,) but the 
elevated line and form of the tubercles will distin- 
guish it from that species. The epidermis is reddish ' 
brown or black. 
MELANIA HYDEII. 
Plate VIII. — Fig. L 
DESCRIPTION. 
Shell conical, rather elevated; whorls flattened, 
with spiral acute tuberculated lines, one or two only 
on each whorl of the spire, and about four on the 
body whorl, the inferior one plain; aperture elliptical. 
OBSERVATIONS. 
Inhabits rocks in the Black Warrior river, south 
of Blount’s Springs, Alabama, and is very abundant. 
It is remarkable for its distant tuberculated lines. 
Young specimens are olive, with a purple band on 
each whorl, and are without tubercles; the body 
whorl is angulated, and car mated. 
It is named in honour of Mr. William Hyde, an 
industrious and excellent Conchologist. 
