VIVIPARA. 33 
The peculiar constriction of the upper por- 
tion of the lip as shown in the figure (Plate 
13, fig. 7), is very usual in adult specimens. 
Mr. Lea described from a single deformed spe- 
cimen (Plate 15, fig. 1) many years ago, with- 
out giving a figure; it was therefore impossi- 
ble for Mr. Anthony to avoid making a 
synonym. I think the Alabama locality some- 
what doubtful. 
Subgenus TULOTOMA, Haldeman. 
22, VIVIPARA BIMONILIFERA, Lea. 
V. magnifica, Haldeman, Plate 11. 
This species has only as yet been found in 
the waters of Alabama. 
[59] 3 
