i09 



Section 2nd, with a central band. 

 To this section the species mentioned by Monti'ort belong. 



Bellerophon hiulcus. 

 TAB. CCCCLXX.— Jig 1. 



Spec. Char. Globose, expanded, closely 

 striated ; central band flat, broad, defined ; 

 axis perforated. 



Syn. Conchyliolithus Nautilites hiulcus, 

 Martin Pet, Derh. tab. 40. f. I. and perhaps 

 fig. 2. Si/st. Arrangemeid to tab. 1 of ditto y 

 p. L5. var. a? h. 



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 leave? 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. 



BELLEROPHON tenuifascia. 



TAB. CCCCLXX.— /^5. 2 and 3. 



Spec Char. Sphaerical, umbilicated, finely 

 striated; band linear, elevated. 

 Syn. Conch. Naut. hiulcus, var. c. Martin 

 Pet. Derh. Syst. Arrang. p. 15. 



A MORE sphaerical 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. 



