DESCRIPTIONS 
OF 
THE FOSSILS 
FROM 
THE EOCENE DEPOSITS OF BOGNOR. 
ANNELIDA. 
Serpula flagelliformis. 
This is rare both at Bognor and at Bracklesham. 
CIRRIPEDA. § 2. Pedunculated. 
Xiphidium. 
Gen. Cuar.—Stem covered by shelly scales ; body compressed, composed of 
thirteen valves; one subulate dorsal valve, increasing downwards from the 
apex, and six pairs of lateral valves, of which one pair is terminal and two pairs 
medial, all increasing from their apices downwards, and three smaller pairs 
around the base enlarging laterally. 
A genus distinguished from Scalpellum by the form and mode of increase of 
the dorsal valve, which in some species resembles so much the same valve in 
Pollicipes, that, so long as I had only seen separate valves of the body, I was 
induced to refer the species to that genus. In the arrangement of the other 
valves, their number, and in their mode of increase, it is wholly different from 
Pollicipes, and much more like Scalpellum, in which, however, the dorsal valve 
has a projecting point or elbow in its centre, from which it enlarges both 
upwards and downwards. 
This genus occurs in London clay, chalk, gault, and perhaps in lias, for Polli- 
cipes planulatus, Min. Con. 647. f. 2, may possibly belong to it. The true Pol- 
licipes I have only seen fossil in lias, and Scalpellum in crag. 
