DESCRIPTIONS OF THE BOGNOR FOSSILS. 223 
Xiphidium quadratum. (Tab. XIV. figs. 3 & 4.) 
Spec. Cuar.—Dorsal valve with flat sides, its section quadrangular ; scales 
on the stem narrow, pointed. 
The finest specimens of this Cirripod are large masses of sandy stone, con- 
taining great numbers mixed with Vermetus Bognoriensis. The stems however 
are decomposed, and the scales which I presume covered them are scattered in 
all directions. At Hampstead and Highgate, single valves only have been found 
by Mr. Wetherell. 
CRUSTACEA. 
Astacus Bellu. (Tab. XV. figs. 3 & 4.) 
Spec. Cuar.—Thorax smooth and punctate; claws and moveable finger 
having a strong obtuse carina, and furnished with a double series of spines ; 
abdomen smooth, punctate, and slightly sculptured. The double row of spines 
may be accidental, as they are sometimes observed on recent Lobsters. 
I have called this species after my friend Thomas Bell, Esq., F.R.S., F.G.S., the 
author of the excellent work on British Crustacea. Fossil Crustaceans are very 
rare at Bognor and Bracklesham, though common in the London clay at Sheppey 
and Highgate. A work is much wanted on British Fossil Crustacea, and I hope 
Mr. Bell will turn his attention to the subject when he has finished the recent 
species. 
Cancer Leach, Konig. (Tab. XV. fig. 5.) 
This specimen is in sulphuret of iron, and was found by G. A. Coombe, Esq. 
It is now in the cabinet of T. Bell, Esq. 
I have one more specimen of this species in my own collection ; these being 
the only two examples I have been able to procure from Bognor. At Alum Bay 
in the Isle of Wight, this species occurs in very fine preservation, from the 
Eocene formation of that locality. 
CONCHIFERA DIMYARIA. 
Pholas Pechellii. (Tab. XIV. fig. 10.) 
Spec, Cuar.—Shell subclavate, concentrically striated ; anterior portion but 
slightly sinuated, small, separated by a deep, narrow, oblique furrow, which is 
directed backwards ; beaks anterior, not prominent ; length half the width. 
GED 
