3) 
CUCULLAAA decussata. 
TAB, CCVI.---Figs. 3 and 4, 
Syn. Cucullea decussata. Parkinson ITT. 17}. 
Spec. Cuar. ‘Transversely ovate; gibbose, with 
flattish longitudinal ridges ; anterior side an- 
gular ; lines beneath the cartilage few. 
=— a 
Asovr one-fifth wider than long: the ridges are but 
little elevated, and are decussated by fine and close lines 
of growth: the interior margin in old shells is crenu- 
lated: the teeth of the hinge, when they are not worn, 
are striated or crenulated upon their sides, as I have ob- 
served when speaking of C. glabra, (Vol. I. p. 152, t.67.) 
T received this from the same gentleman who sent Mr. 
Parkinson the specimens he describes, Mr. Francis Crow, 
who collected them all near Faversham, in Kent : they 
are silicious casts, with a small portion of the shell re- 
maining. 
