128 CONTRIBUTIONS 
T. striata. Plate 4. Fig. 117. 
Description. Shell elevated above, rounded below, 
thickly covered with transverse strize cut by minute longi- 
tudinal striz ; substance of the shell rather thick ; apex 
not acute; suture impressed; umbilicus very small : 
whorls six, inflated; mouth nearly round, striate within, 
one-third the length of the shell ; outer lip crenate. 
Length 7-20ths, Breadth .2, of an inch. 
Observations. A beautifully ornamented and certainly 
very interesting shell. It is closely filled with trans- 
verse rounded striz, having the appearance of cords, the 
middle one of which is rather the largest. The cutting 
strie are somewhat imbricate. Single specimens only of 
this and the two following species have come into my pos- 
session. This species more strongly resembles the Turbo 
sculptus of Sowerby, than the following species do. 
T. alternata. Plate 4. Fig. 118. 
Description. Shell elevated above, rounded below, with 
numerous transverse stria, alternately larger and smaller, 
cut by fine longitudinal striz; substance of the shell 
rather thick ; apex not acute ; suture sharply impressed ; 
umbilicus small; whorls six, inflated; mouth nearly 
round, striate within, one third the length of the shell ; 
outer lip crenate. 
Length .3, Breadth ;2, of an inch. 
