PLATE 38, 39, 40> 41. 
mentioned by Mr. Whitehurst in his work on the Formation 
of the Earth, p. 184. As a further confirmation of the 
opinion we have formed respecting this supposed crocodile, 
we have to remark, that the men who now work in the 
marble quarries at Ashford, continue to call the Orthocera- 
tita, when they meet with them. Crocodiles' tails; agreeable 
to the idea which was first entertained on finding these 
bodies. It is to be regretted, however, that the specimen 
noticed by Mr. Whitehurst is not now in England ; — a 
reference to it would at once have cleared up any doubt 
that may remain on the subject : but it was purchased, as I 
am informed, by a foreign collector, and is at present in 
the cabinet of one of the German princes. 
P. 40 — FIG. 1 , 2 . 
CONCHYLIOLITHUS Nautilites ? (hhdcus ) sub- 
globosus imperforatus strlatus; striis transverso-obli- 
quis, ad arabitum linea unitis, apertura ampliata, 
dissepimentis ? S. p. 
A fossil shell. The original a Nautilus. Involuted, 
somewhat globose, imperforate, striated ; the strlie close, 
acute, transverse, but oblique on the sides, and united by a 
single, narrow, dorsal line at the ambit. The mouth or 
aperture large, and somewhat extended on each side. The 
form and situation of the dissepiments are unknown. 
