109 
Section 2nd, with sl. central band. 
To this section the species mentioned by Montfort belong’. 
Bellergphon hiulcus. 
TAB. CCCCLXX- fig l. 
Spec. Char. Globose, expanded, closely 
striated ; central band flat, broad, defined ; 
axis perforated* 
Syn. Conchyliolithus Nautilites hiulcus, 
Martin Pet . Derb . tab. 40. f. 1 . and perhaps 
fig. 2. Syst. Arrangement to tab . 1 of ditto, 
p. 15. var . a ? b. 
Cose, sharp, elevated striae that pass obliquely from 
the central flat band to the axis, distinguish this species, 
which is moreover wider than any other ; the sinus in 
front is deep, and leaves arched striae upon the band, as 
it is filled by the growth of the shell ; the sides of the 
band are defined by sharp depressed lines ; it is nearly 
the eighth of an inch wide. 
Our specimen is from Derbyshire, but without ex- 
amining both of Martin’s specimens, we are not certain 
that they are one species ; his fig. 2, or variety a, ap- 
proaches to our fig. 4. 
BELLERGPHON tenuifascia. 
TAB. CCCCLXX —figs. 2 and 3. 
Spec. Char. Sphserical, umbilicated, finely 
striated; band linear, elevated. 
Syn. Conch. Naut. hiulcus, var. c. Martin 
Pet. JDerb. Syst. Arrang. p. 15. 
A more sphierical shell than the last, with much finer 
and more numerous striae ; it has also a larger umbilicus, 
and a very narrow elevated thread like band. 
Found in Derbyshire (fig. 3.) at Scaleber, near Settle 
in Yorkshire, (fig. 2.) and near Kendal, sometimes three 
inches in diameter. It is evidently the third variety of 
C. N. hiulcus of Martin, which he has not figured. 
